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Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
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1

TRENDS: Jones et al. Temperature Anomalies  

NLE Websites -- All DOE Office Websites (Extended Search)

Data Tables of Global and Hemispheric Temperature Anomalies data Table - Global Monthly and Annual Temperature Anomalies, 1850-2012. data Table - Northern Hemisphere Monthly and...

2

Time Series Graphs of Global and Hemispheric Temperature Anomalies...  

NLE Websites -- All DOE Office Websites (Extended Search)

Time Series Graphs of Global and Hemispheric Temperature Anomalies graphics Graph - Global and Hemispheric Annual Temperature Anomalies, 1850-2012 graphics Graph - Northern...

3

Defining and Estimating Global Mean Temperature Anomalies  

Science Conference Proceedings (OSTI)

Methods used to quantify temperature changes of the earth must he assessed relative to an appropriate definition of global mean temperature. In this paper, global mean temperature is defined and the adequacy of using weighted average anomalies to ...

Richard F. Gunst; Sabyasachi Basu; Robert Brunell

1993-07-01T23:59:59.000Z

4

TRENDS: Global and Hemispheric Temperature Anomalies  

NLE Websites -- All DOE Office Websites (Extended Search)

Global and Hemispheric Temperature Anomalies - Land and Marine Instrumental Records graphics Graphics data Data Investigators P. D. Jones1, D. E. Parker2, T. J. Osborn1, and K. R....

5

Some Considerations Relevant to Computing Average Hemispheric Temperature Anomalies  

Science Conference Proceedings (OSTI)

Three data bases of gridded surface temperature anomalies were used to assess the sensitivity of the average estimated Northern Hemisphere (NH) temperature anomaly to: 1) extreme gridpoint values and 2) zonal band contributions. Over the last 100 ...

S. L. Grotch

1987-07-01T23:59:59.000Z

6

Detection of Surface Temperature Anomalies in the Coso Geothermal...  

Open Energy Info (EERE)

of Surface Temperature Anomalies in the Coso Geothermal Field Using Thermal Infrared Remote Sensing Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference...

7

Detection of Surface Temperature Anomalies in the Coso Geothermal Field  

Open Energy Info (EERE)

Detection of Surface Temperature Anomalies in the Coso Geothermal Field Detection of Surface Temperature Anomalies in the Coso Geothermal Field Using Thermal Infrared Remote Sensing Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Detection of Surface Temperature Anomalies in the Coso Geothermal Field Using Thermal Infrared Remote Sensing Details Activities (1) Areas (1) Regions (0) Abstract: We use thermal infrared (TIR) data from the spaceborne ASTER instrument to detect surface temperature anomalies in the Coso geothermal field in eastern California. The identification of such anomalies in a known geothermal area serves as an incentive to apply similar markers and techniques to areas of unknown geothermal potential. We carried out field measurements concurrently with the collection of ASTER images. The field

8

Anomalies of Central England Temperature Classified by Air Source  

Science Conference Proceedings (OSTI)

Daily anomalies of mean central England temperature (CET), relative to daily 1961–90 climatology, are analyzed in terms of the source of the air estimated from fields of mean sea level pressure. The average CET anomaly for a given source and ...

David E. Parker

2009-03-01T23:59:59.000Z

9

Diagnosis of Extended Cold-Season Temperature Anomalies in Alaska  

Science Conference Proceedings (OSTI)

During the early winter of 2002 and late winter of 2007, the Alaskan sector of the North Pacific Ocean region experienced record-breaking temperature anomalies. The duration of these episodes was unusually long, with each lasting more than 1 ...

Martha Shulski; John Walsh; Eric Stevens; Richard Thoman

2010-02-01T23:59:59.000Z

10

Global Annual Temperature Anomalies from Land and Ocean Observations...  

NLE Websites -- All DOE Office Websites (Extended Search)

Temperature Anomalies from Land and Ocean Observations, 1880-2012 image data Data Graphics Graphics Reference Hansen, J.E., R. Ruedy, M. Sato, and K. Lo. 2013. NASA GISS...

11

Mechanisms Determining the Atmospheric Response to Sea Surface Temperature Anomalies  

Science Conference Proceedings (OSTI)

A simple model is used to study the mechanisms which control the local and remote (teleconnection) response of the atmosphere to the thermal forcing resulting from sea surface temperature (SST) anomalies located at various latitudes. The model ...

Peter J. Webster

1981-03-01T23:59:59.000Z

12

Tropospheric and Lower Stratospheric Temperature Anomalies Based on Global  

NLE Websites -- All DOE Office Websites (Extended Search)

Tropospheric and Lower Stratospheric Temperature Anomalies Based on Global Tropospheric and Lower Stratospheric Temperature Anomalies Based on Global Radiosonde Network Data DOI: 10.3334/CDIAC/cli.004 data Data image Graphics Investigators Alexander M. Sterin Russian Research Institute for Hydrometeorological Information-World Data Center (RIHMI-WDC), 6, Korolyov str., Obninsk, Kaluga region, Russia, 249035 Period of Record January, 1958 - September, 2005 (relative to the average for 1961-1975). Methods The observed radiosonde data from the Comprehensive Aerological Reference Data Set (CARDS) (Eskridge et al. 1995) were taken as the primary input for obtaining the series. These data were for the global radiosonde observational network through 2001. Since 2002, the AEROSTAB data (uper-air observations obtained through communication channels), collected at

13

Numerical Simulation of the Atmospheric Response to Equatorial Pacific Sea Surface Temperature Anomalies  

Science Conference Proceedings (OSTI)

A number of recent observational and theoretical studies indicate that under certain conditions tropical sea surface temperature anomalies may be capable of producing climatic anomalies at extratropical latitudes. According to the hypothesis put ...

J. Shukla; J. M. Wallace

1983-07-01T23:59:59.000Z

14

Statistical relationships between the surface air temperature anomalies and the solar and geomagnetic activity indices  

E-Print Network (OSTI)

Statistical analysis of the data series from 1856 to 2000 for the annual global and hemispheric surface air temperature anomalies is completed. Statistically significant correlations are found between global and hemispheric temperature anomalies and solar and geomagnetic indices. The temperature anomalies in the Northern and Southern hemispheres show similar statistical relations with the solar and geomagnetic indices. The cross-correlation analysis shows no statistically significant global temperature lag behind the sunspots as well as behind aa-indices. The correlation between the temperature anomalies and the geomagnetic indices is about two times higher than the correlation between the temperature anomalies and the solar indices. These results support the suggestion that the geomagnetic forcing predominates over the solar activity forcing on the global and hemispheric surface air temperatures.

Valev, Dimitar

2010-01-01T23:59:59.000Z

15

Solar Flare Intermittency and the Earth's Temperature Anomalies Nicola Scafetta1,2  

E-Print Network (OSTI)

Solar Flare Intermittency and the Earth's Temperature Anomalies Nicola Scafetta1,2 and Bruce J; published 17 June 2003) We argue that Earth's short-term temperature anomalies and the solar flare data sets that corresponds to the one that would be induced by the solar flare intermittency. The mean

Scafetta, Nicola

16

Scaling Analysis of the Sea Surface Temperature Anomaly in the South China Sea  

Science Conference Proceedings (OSTI)

Based on the data of optimum interpolation sea surface temperature (OISST), the temporal correlations of the sea surface temperature anomaly (SSTA) in the South China Sea (SCS) are studied by using the rescaled range analysis (R/S) and detrended ...

Zijun Gan; Youfang Yan; Yiquan Qi

2007-04-01T23:59:59.000Z

17

Estimation of Subsurface Temperature Anomaly in the North Atlantic Using a Self-Organizing Map Neural Network  

Science Conference Proceedings (OSTI)

A self-organizing map (SOM) neural network was developed from Argo gridded datasets in order to estimate a subsurface temperature anomaly (STA) from remote sensing data. The SOM maps were trained using anomalies of sea surface temperature (SST), ...

Xiangbai Wu; Xiao-Hai Yan; Young-Heon Jo; W. Timothy Liu

2012-11-01T23:59:59.000Z

18

Model Experiments on the Impact of Pacific Sea Surface Temperature Anomalies on Blocking Frequency  

Science Conference Proceedings (OSTI)

Sensitivity experiments with a perpetual January version of a low-resolution general circulation model are conducted to investigate the influence of Pacific sea surface temperature (SST) anomalies on blocking in the Northern Hemisphere. Six 1200-...

Steven L. Mullen

1989-09-01T23:59:59.000Z

19

The Impact of Sea Surface Temperature Anomalies on the Rainfall over Northeast Brazil  

Science Conference Proceedings (OSTI)

The response of the tropical atmosphere to the sea surface temperature (SST) anomalies in the Northern Hemisphere spring of 1984 is investigated. The methodology for investigation consists of comparing simulations with and without the global ...

Carlos R. Mechoso; Steven W. Lyons; Joseph A. Spahr

1990-08-01T23:59:59.000Z

20

Improving SST Anomaly Simulations in a Layer Ocean Model with an Embedded Entrainment Temperature Submodel  

Science Conference Proceedings (OSTI)

In this study, an improved sea surface temperature (SST) anomaly (SSTA) solution for the tropical Pacific is presented by explicitly embedding into a layer ocean general circulation model (OGCM) a separate SSTA submodel with an empirical ...

Rong-Hua Zhang; Antonio J. Busalacchi; Raghuram G. Murtugudde

2006-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Genesis of Indian Ocean Mixed Layer Temperature Anomalies: A Heat Budget Analysis  

Science Conference Proceedings (OSTI)

The genesis of mixed layer temperature anomalies across the Indian Ocean are analyzed in terms of the underlying heat budget components. Observational data, for which a seasonal budget can be computed, and a climate model output, which provides ...

Agus Santoso; Alexander Sen Gupta; Matthew H. England

2010-10-01T23:59:59.000Z

22

Atmospheric Precipitation in Response to Equatorial and Tropical Sea Surface Temperature Anomalies  

Science Conference Proceedings (OSTI)

Three sets of numerical experiments based on a GFDL GCM were developed to investigate the response of the large-scale tropical circulation and precipitation to the tropical and equatorial sea surface temperature (SST) anomalies. Specified SST ...

Guoxiong Wu; Huanzhu Liu

1992-12-01T23:59:59.000Z

23

Warming Break Trends and Fractional Integration in the Northern, Southern, and Global Temperature Anomaly Series  

Science Conference Proceedings (OSTI)

This paper deals with the estimation of time trends in temperature anomaly series. However, instead of imposing that the estimated residuals from the time trends are covariance stationary processes with spectral density that is positive and ...

Luis A. Gil-Alana

2008-04-01T23:59:59.000Z

24

Impact of Common Sea Surface Temperature Anomalies on Global Drought and Pluvial Frequency  

Science Conference Proceedings (OSTI)

Climate model simulations run as part of the Climate Variability and Predictability (CLIVAR) Drought Working Group initiative were analyzed to determine the impact of three patterns of sea surface temperature (SST) anomalies on drought and ...

Kirsten L. Findell; Thomas L. Delworth

2010-02-01T23:59:59.000Z

25

Air-Sea Interaction as a Propagator of Equatorial Ocean Surface Temperature Anomalies  

Science Conference Proceedings (OSTI)

The westward propagation of equatorial sea surface temperature anomalies exceeds the surface drift velocity and is probably associated with propagating changes in the depth of the surface mixed layer and upper thermocline. These can be caused by ...

Eric B. Kraus; Howard P. Hanson

1983-01-01T23:59:59.000Z

26

Seasonality in the Local and Remote Atmospheric Response to Sea Surface Temperature Anomalies  

Science Conference Proceedings (OSTI)

Two apparently contradictory situations are provided by observations of the atmospheric response to sea surface temperature anomalies. These are: (i) The extratropical regions of the winter hemisphere appear to possess strong teleconnections with ...

Peter J. Webster

1982-01-01T23:59:59.000Z

27

Physics and Dynamics of Density-Compensated Temperature and Salinity Anomalies. Part I: Theory  

Science Conference Proceedings (OSTI)

Subducted temperature anomalies have been invoked as a possible way for midlatitudes to alter the climate variability of equatorial regions through the so-called thermocline bridge, both in the Pacific and Atlantic Oceans. To have a significant ...

Rémi Tailleux; Alban Lazar; C. J. C. Reason

2005-05-01T23:59:59.000Z

28

Sensitivity of the Systematic Error of Extended Range Forecasts to Sea Surface Temperature Anomalies  

Science Conference Proceedings (OSTI)

The sensitivity of the systematic error of extended-range forecasts to sea surface temperature (SST) anomalies is investigated. General circulation model (GCM) experiments were performed to quantify error patterns for warm, normal, and cold SST ...

Kingtse C. Mo; X. L. Wang

1995-06-01T23:59:59.000Z

29

Solar turbulence in earth's global and regional temperature anomalies Nicola Scafetta,1,2  

E-Print Network (OSTI)

Solar turbulence in earth's global and regional temperature anomalies Nicola Scafetta,1,2 Paolo a study of the influence of solar activity on the earth's temperature. In particular, we focus on the repercussion of the fluctuations of the solar irradiance on the temperature of the Northern and Southern

Scafetta, Nicola

30

Estimation of the Surface Heat Flux Response to Sea Surface Temperature Anomalies over the Global Oceans  

Science Conference Proceedings (OSTI)

The surface heat flux response to underlying sea surface temperature (SST) anomalies (the surface heat flux feedback) is estimated using 42 yr (1956–97) of ship-derived monthly turbulent heat fluxes and 17 yr (1984–2000) of satellite-derived ...

Sungsu Park; Clara Deser; Michael A. Alexander

2005-11-01T23:59:59.000Z

31

Testing a Dynamical Model for Mid-Latitude Sea Surface Temperature Anomalies  

Science Conference Proceedings (OSTI)

A slab model of the oceanic mixed layer is used to predict the statistical characteristics of the sea surface temperature anomalies that are forced by day-to-day changes in air-sea fluxes in the presence of a mean current. Because of the short ...

Claude Frankignoul; Richard W. Reynolds

1983-07-01T23:59:59.000Z

32

An updated global grid point surface air temperature anomaly data set: 1851--1990  

Science Conference Proceedings (OSTI)

This document presents land-based monthly surface air temperature anomalies (departures from a 1951--1970 reference period mean) on a 5{degree} latitude by 10{degree} longitude global grid. Monthly surface air temperature anomalies (departures from a 1957--1975 reference period mean) for the Antarctic (grid points from 65{degree}S to 85{degree}S) are presented in a similar way as a separate data set. The data were derived primarily from the World Weather Records and the archives of the United Kingdom Meteorological Office. This long-term record of temperature anomalies may be used in studies addressing possible greenhouse-gas-induced climate changes. To date, the data have been employed in generating regional, hemispheric, and global time series for determining whether recent (i.e., post-1900) warming trends have taken place. This document also presents the monthly mean temperature records for the individual stations that were used to generate the set of gridded anomalies. The periods of record vary by station. Northern Hemisphere station data have been corrected for inhomogeneities, while Southern Hemisphere data are presented in uncorrected form. 14 refs., 11 figs., 10 tabs.

Sepanski, R.J.; Boden, T.A.; Daniels, R.C.

1991-10-01T23:59:59.000Z

33

Airborne-temperature-survey maps of heat-flow anomalies for exploration geology  

DOE Green Energy (OSTI)

Airborne temperature surveys were used to depict the small surface temperature differences related to heat flow anomalies. Zones with conductive heat flow differences of 45 +- 16 ..mu..cal/cm/sup 2/(s) had predawn surface temperature differences of 1.4 +- 0.3/sup 0/C. Airborne temperature surveys were coordinated with field temperature surveys at Long Valley, California, the site of a known geothermal resource area. The airborne temperature surveys recorded redundant, predawn temperatures at two wavelengths and at two elevations. Overall temperature corrections were determined by calibrating dry soil surface temperatures with thermistor probes. The probes measured air and soil temperatures within 2 cm of the surface, every twenty minutes, during the survey overflights.

Del Grande, N.K.

1982-07-09T23:59:59.000Z

34

Correlations and periodicities in Himalayan tree ring widths and temperature anomalies through wavelets  

E-Print Network (OSTI)

We have studied periodicities and correlation properties of tree ring width chronology of deodar tree from Joshimath (1584 - 1999 years) and Uttarkashi (1500 - 2002 years) in the western Himalayas and the pre-monsoon (March-April-May) temperature anomalies (1876 - 2003) relative to 1961 -1990 mean, through wavelet analysis. Periodic behavior is observed in the tree ring chronology with periodicity in the form 11, 22, and 42 years. The analysis of the self-similar nature reveals long-range correlation with a Hurst exponent, $H >0.5$. These are anti-correlated with the temperature anomalies. An interesting inversion behavior is observed around the year 1750. The power spectral analysis of the time series corroborate the results of wavelet method.

Prasanta K. Panigrahi; P. Manimaran; Ananth Lakhmi; Ram R. Yadav

2006-04-01T23:59:59.000Z

35

Observed Nonlinearities of Monthly Teleconnections between Tropical Pacific Sea Surface Temperature Anomalies and Central and Eastern North American Precipitation  

Science Conference Proceedings (OSTI)

Most investigations of relationships between tropical Pacific sea surface temperature anomaly (SSTA) events and regional climate patterns have assumed the teleconnections to be linear, whereby the climate patterns associated with cold SSTA events ...

David L. Montroy; Michael B. Richman; Peter J. Lamb

1998-07-01T23:59:59.000Z

36

Analysis of General Circulation Model Sea-Surface Temperature Anomaly Simulations Using a Linear Model. Part I: Forced Solutions  

Science Conference Proceedings (OSTI)

Experiments are presented which indicate that many features of the response of a general circulation model to sea-surface temperature anomalies in the equatorial Pacific east of the dateline can be reproduced with a linear nondivergent barotropic ...

Grant Branstator

1985-11-01T23:59:59.000Z

37

Response of the Atmosphere to Sea Surface Temperature Anomalies over the Equatorial Pacific and the Teleconnections of the Southern Oscillation  

Science Conference Proceedings (OSTI)

In order to improve our understanding of the role of equatorial Pacific sea surface temperature (SST) anomalies in the Southern Oscillation and the variability of the Walker Circulation, we have conducted sensitivity studies with warm SSTA's over ...

R. N. Keshavamurty

1982-06-01T23:59:59.000Z

38

Analysis of the GISS GCM Response to a Subtropical Sea Surface Temperature Anomaly Using a Linear Model  

Science Conference Proceedings (OSTI)

The GISS general circulation model (GCM) is used to investigate the influence of a positive sea surface temperature (SST) anomaly in the subtropical North Pacific on the Northern Hemisphere wintertime circulation. As the set of model data is ...

Claude Frankignoul; Antoine Molin

1988-12-01T23:59:59.000Z

39

Airborne-temperature-survey maps of heat-flow anomalies for exploration geology  

DOE Green Energy (OSTI)

Precise airborne temperature surveys depicted small predawn surface temperature differences related to heat flow anomalies at the Long Valley, California, KGRA. Zones with conductive heat flow differences of 45 +- 16 ..mu..cal/cm/sup 2/(s) has predawn surface temperature differences of 1.4 +- 0.3/sup 0/C. The warmer zones had hot water circulating in a shallow (less than 60-m-deep) aquifer. Hot water is a useful geochemical indicator of geothermal and mineral resource potential. The precise airborne temperature survey method recorded redundant infrared scanner signals at two wavelengths (10 to 12 ..mu..m and 4.5 to 5.5 ..mu..m) and two elevations (0.3 km and 1.2 km). Ground thermistor probes recorded air and soil temperatures during the survey overflights. Radiometric temperatures were corrected for air-path and reflected-sky-radiation effects. Corrected temperatures were displayed in image form with color-coded maps which depicted 0.24/sup 0/C temperature differences. After accounting for surficial features on the corrected predawn thermal imagery, there remained several anomalous zones. These zones had high temperature gradients at depths from 6 to 30 m, compared to the temperature gradients in nearby areas.

Del Grande, N.K.

1982-11-10T23:59:59.000Z

40

Seasonal Prediction of Sea Surface Temperature Anomalies Using a Suite of 13 Coupled Atmosphere–Ocean Models  

Science Conference Proceedings (OSTI)

Improved seasonal prediction of sea surface temperature (SST) anomalies over the global oceans is the theme of this paper. Using 13 state-of-the-art coupled global atmosphere–ocean models and 13 yr of seasonal forecasts, the performance of ...

T. N. Krishnamurti; Arindam Chakraborty; Ruby Krishnamurti; William K. Dewar; Carol Anne Clayson

2006-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Relationships between Low-Frequency Variability in the Southern Hemisphere and Sea Surface Temperature Anomalies  

Science Conference Proceedings (OSTI)

Long-term trends and interannual variations of circulation anomalies in the Southern Hemisphere are examined using the National Centers for Environmental Prediction–National Center for Atmospheric Research reanalysis from 1949 to 1998. The ...

Kingtse C. Mo

2000-10-01T23:59:59.000Z

42

Global Climate Variations Connected with Sea Surface Temperature Anomalies in the Eastern Equatorial Pacific Ocean for the 1958–73 Period  

Science Conference Proceedings (OSTI)

The sea surface temperature anomalies in the eastern equatorial Pacific Ocean are shown to demarcate a “key region” new 130°W for observed variations in the global general circulation. Various techniques are used to describe global conditions ...

Yi Hong Pan; Abraham H. Oort

1983-06-01T23:59:59.000Z

43

Hemispheric Anomalies of 700 mb Height Related to Mean Temperature for Fall, Winter and Spring in the United States  

Science Conference Proceedings (OSTI)

Zonally averaged composite anomalies of 700 mb height for years preceding and during four warm winters in the contiguous United States show generally positive anomalies over subtropical and middle latitudes and generally negative anomalies over ...

Carl O. Erickson

1984-03-01T23:59:59.000Z

44

The influence of tropical Pacific SST anomaly on surface air temperature in China  

Science Conference Proceedings (OSTI)

The influence of the tropical Pacific sea surface temperature (SST) on the wintertime surface air temperature (SAT) in China is investigated using both the observational data and the output of coupled ocean-atmosphere numerical models during the ...

XiaoJing Jia; Hai Lin; Xia Yao

45

An Empirical Benchmark for Decadal Forecasts of Global Surface Temperature Anomalies  

Science Conference Proceedings (OSTI)

The suitability of a linear inverse model (LIM) as a benchmark for decadal surface temperature forecast skill is demonstrated. Constructed from the observed simultaneous and 1-yr lag covariability statistics of annually averaged sea surface ...

Matthew Newman

2013-07-01T23:59:59.000Z

46

Recent Maximum Temperature Anomalies at Albany, New York: Fact or Fiction  

Science Conference Proceedings (OSTI)

An analysis has been conducted of a suspected daily maximum temperature (DMT) bias introduced by the replacement of the National Weather Service (NWS) HO-63 bygrothermograph with a modernized HO-83 instrument at Albany, New York, on 6 February ...

Ronald W. Kessler; Lance F. Bosart; Robert S. Gaza

1993-02-01T23:59:59.000Z

47

A new water anomaly: the temperature dependence of the proton mean kinetic energy  

E-Print Network (OSTI)

The mean kinetic energy of protons in water is determined by Deep Inelastic Neutron Scattering experiments, performed above and below the temperature of maximum density and in the supercooled phase. The temperature dependence of this energy shows an anomalous behavior, as it occurs for many water properties. In particular two regions of maximum kinetic energy are identified: the first one, in the supercooled phase in the range 269 K - 272 K, and a second one above 273 K. In both these regions the measured proton kinetic energy exceedes the theoretical prediction based on a semi-classical model. Noteworthy, the proton mean kinetic energy has a maximum at 277 K, the temperature of the maximum density of water. In the supercooled metastable phase the measured mean kinetic energy and the proton momentum distribution clearly indicate proton delocalization between two H-bonded oxygens.

Davide Flammini; Fabio Bruni; Maria Antonietta Ricci

2009-01-27T23:59:59.000Z

48

Regional and Global Impacts of Land Cover Change and Sea Surface Temperature Anomalies  

Science Conference Proceedings (OSTI)

The atmospheric and land components of the Geophysical Fluid Dynamics Laboratory’s (GFDL’s) Climate Model version 2.1 (CM2.1) is used with climatological sea surface temperatures (SSTs) to investigate the relative climatic impacts of historical ...

Kirsten L. Findell; Andrew J. Pitman; Matthew H. England; Philip J. Pegion

2009-06-01T23:59:59.000Z

49

Investigating the Impact of Reemerging Sea Surface Temperature Anomalies on the Winter Atmospheric Circulation over the North Atlantic  

Science Conference Proceedings (OSTI)

Extratropical SSTs can be influenced by the “reemergence mechanism,” whereby thermal anomalies in the deep winter mixed layer persist at depth through summer and are then reentrained into the mixed layer in the following winter. The impact of ...

Christophe Cassou; Clara Deser; Michael A. Alexander

2007-07-01T23:59:59.000Z

50

Radiative and Dynamical Forcing of the Surface and Atmospheric Temperature Anomalies Associated with the Northern Annular Mode  

Science Conference Proceedings (OSTI)

On the basis of the total energy balance within an atmosphere–surface column, an attribution analysis is conducted for the Northern Hemisphere (NH) atmospheric and surface temperature response to the northern annular mode (NAM) in boreal winter. ...

Yi Deng; Tae-Won Park; Ming Cai

2013-07-01T23:59:59.000Z

51

The Vertical Structures of Atmospheric Temperature Anomalies Associated with Two Flavors of El Niño Simulated by AMIP II Models  

Science Conference Proceedings (OSTI)

Recent studies have identified different modes associated with two flavors of El Niño in terms of the three-dimensional structure of atmospheric temperature. The first is a deep-warm mode, which features a coherent zonal mean warming throughout ...

Tianjun Zhou; Jie Zhang

2011-02-01T23:59:59.000Z

52

A General Circulation Model Study of January Climate Anomaly Patterns Associated with Interannual Variation of Equatorial Pacific Sea Surface Temperatures  

Science Conference Proceedings (OSTI)

A general circulation model has been run in the perpetual January mode to produce several long-term simulations, each distinguished by a different imposed equatorial Pacific sea surface temperature. From each of them simulations we have extracted ...

Maurice L. Blackmon; John E. Geisler; Eric J. Pitcher

1983-06-01T23:59:59.000Z

53

An Examination of El Niño–La Niña-Related Precipitation and Temperature Anomalies across the Northern Plains  

Science Conference Proceedings (OSTI)

Monthly total precipitation and mean temperature data records extending from the late nineteenth century to 1990 were collected for 147 stations in South Dakota, North Dakota, and portions of adjacent states and provinces. This region, defined as ...

Matthew J. Bunkers; James R. Miller Jr.; Arthur T. DeGaetano

1996-01-01T23:59:59.000Z

54

Short-Term Climatic Fluctuations Forced by Thermal Anomalies  

Science Conference Proceedings (OSTI)

A two-level, global, spectral model is used to study the response of the atmosphere to sea surface temperature anomalies. Two sea surface temperature anomaly patterns are investigated. The first, called the El Niño pattern (Experiment 1), ...

Adel F. Hanna; Duane E. Stevens; Elmar R. Reiter

1984-01-01T23:59:59.000Z

55

Investigations of Possible Low-Level Temperature and Moisture Anomalies During the AMIE Field Campaign on Manus Island  

SciTech Connect

This document discusses results stemming from the investigation of near-surface temperature and moisture “oddities” that were brought to light as part of the Atmospheric Radiation Measurement (ARM) Madden-Julian Oscillation (MJO) Investigation Experiment (AMIE), Dynamics of the Madden-Julian Oscillation (DYNAMO), and Cooperative Indian Ocean experiment on intraseasonal variability in the Year 2011 (CINDY2011) campaigns.

Long, CN; Holdridge, DJ

2012-11-19T23:59:59.000Z

56

Life Span of Subseasonal Coupled Anomalies  

Science Conference Proceedings (OSTI)

The impact of the local phase relationship between the low-level atmospheric circulation and the sea surface temperature (SST) on the duration of atmospheric anomalies is statistically evaluated. Using 5-day-average data from the NCEP–NCAR ...

Malaquías Peña; Ming Cai; Eugenia Kalnay

2004-04-01T23:59:59.000Z

57

Is the Accrual Anomaly a Global Anomaly?  

E-Print Network (OSTI)

This paper investigates the subsequent return implications of accruals within a sample of large, developed, international equity markets and assesses whether similar institutional features account for the accrual anomaly ...

LaFond, Ryan

2005-09-23T23:59:59.000Z

58

Tir (Aster) Geothermal Anomalies | Open Energy Information  

Open Energy Info (EERE)

Tir (Aster) Geothermal Anomalies Tir (Aster) Geothermal Anomalies Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Tir (Aster) Geothermal Anomalies Details Activities (1) Areas (1) Regions (0) Abstract: The focus of this research is the detection of shallow thermal anomalies for geothermal exploration and field management. The objective of this paper is to outline the steps involved in applying thermal infrared imagery (TIR) for this task. This process is part of an ongoing project at the Energy & Geoscience Institute (EGI), where we are developing a methodology to use daytime and nighttime thermal infrared imagery produced by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) to map shallow thermal anomalies. Kinetic temperature images

59

Anomaly General Circulation Models  

Science Conference Proceedings (OSTI)

Anomally models based on a spectral general circulation model (GCM) are formulated and applied to study of low-frequency atmospheric variability in the extratropics, and long-range forecasting research. A steady linear version of the anomaly ...

A. Navarra; K. Miyakoda

1988-05-01T23:59:59.000Z

60

Dynamical Seasonal Forecasts during the 1997/98 ENSO Using Persisted SST Anomalies  

Science Conference Proceedings (OSTI)

An evaluation of trial seasonal forecasts during the 1997/98 El Niño, using an atmospheric GCM forced by persisted sea surface temperature and sea-ice anomalies, is presented. Generally, forecasts of seasonal anomalies of precipitation, surface ...

Carsten S. Frederiksen; Huqiang Zhang; Ramesh C. Balgovind; Neville Nicholls; Wasyl Drosdowsky; Lynda Chambers

2001-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Mechanisms of Summertime Subtropical Southern Indian Ocean Sea Surface Temperature Variability: On the Importance of Humidity Anomalies and the Meridional Advection of Water Vapor  

Science Conference Proceedings (OSTI)

It is well known that some austral summertime subtropical Indian Ocean sea surface temperature (SST) variability correlates with rainfall over certain regions of Africa that depend on rainfall for their economic well-being. Recent studies have ...

A. M. Chiodi; D. E. Harrison

2007-10-01T23:59:59.000Z

62

National Magnetic Anomaly Map  

DOE Green Energy (OSTI)

A record of the conclusions of a three-day meeting and workshop of the Committee for a National Magnetic Anomaly Map held in February 1976 is presented. The purpose of he workshop was to prepare a statement of the benefits, objectives, specifications, and requirements of a NMAM and establish a working plan for producing the map. (ACR)

Not Available

1976-01-01T23:59:59.000Z

63

Anomaly Detection at Multiple Scales  

Science Conference Proceedings (OSTI)

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Anomaly Detection at Multiple Scales, or ADAMS, is a $35 million DARPA project designed to identify patterns and anomalies ...

Alain Sren Mikhayhu

2012-06-01T23:59:59.000Z

64

The Annual Peak in the SST Anomaly Spectrum  

Science Conference Proceedings (OSTI)

The manner in which monthly mean sea surface temperature anomalies (SSTAs) show enhanced variance at the annual period in the extratropics (an annual peak in the variance spectrum) is illustrated by observations and model simulations. A mechanism,...

Jens Möller; Dietmar Dommenget; Vladimir A. Semenov

2008-06-01T23:59:59.000Z

65

Impact of Subsurface Temperature Variability on Surface Air Temperature Variability: An AGCM Study  

Science Conference Proceedings (OSTI)

Anomalous atmospheric conditions can lead to surface temperature anomalies, which in turn can lead to temperature anomalies in the subsurface soil. The subsurface soil temperature (and the associated ground heat content) has significant memory—...

Sarith P. P. Mahanama; Randal D. Koster; Rolf H. Reichle; Max J. Suarez

2008-08-01T23:59:59.000Z

66

NASA GISS Surface Temperature (GISTEMP) Analysis: Graphics  

NLE Websites -- All DOE Office Websites (Extended Search)

Temperature Analysis Graphs NASA GISS Surface Temperature (GISTEMP) Analysis: Graphics Time Series Graphs of Global, Hemispheric, and Zonal Temperature Anomalies Graphics...

67

Monitoring smartphones for anomaly detection  

Science Conference Proceedings (OSTI)

In this paper we demonstrate how to monitor a smartphone running Symbian operating system and Windows Mobile in order to extract features for anomaly detection. These features are sent to a remote server because running a complex intrusion detection ... Keywords: anomaly detection, monitoring, smartphones

Aubrey-Derrick Schmidt; Frank Peters; Florian Lamour; Christian Scheel; Seyit Ahmet Çamtepe; Sahin Albayrak

2009-02-01T23:59:59.000Z

68

Trace Anomaly in Geometric Discretization  

E-Print Network (OSTI)

I develop the simplest geometric-discretized analogue of two dimensional scalar field theory, which qualitatively reproduces the trace anomaly of the continuous theory. The discrete analogue provides an interpretation of the trace anomaly in terms of a non-trivial transformation of electric-magnetic duality-invariant modes of resistor networks that accommodate both electric and magnetic charge currents.

Czech, B

2007-01-01T23:59:59.000Z

69

Temperature Variability over Africa  

Science Conference Proceedings (OSTI)

The variation of near-surface air temperature anomalies in Africa between 1979 and 2010 is investigated primarily using Microwave Sounding Unit (MSU) total lower-tropospheric temperature data from the Remote Sensing Systems (RSS) and the ...

Jennifer M. Collins

2011-07-01T23:59:59.000Z

70

Graph anomalies in cyber communications  

Science Conference Proceedings (OSTI)

Enterprises monitor cyber traffic for viruses, intruders and stolen information. Detection methods look for known signatures of malicious traffic or search for anomalies with respect to a nominal reference model. Traditional anomaly detection focuses on aggregate traffic at central nodes or on user-level monitoring. More recently, however, traffic is being viewed more holistically as a dynamic communication graph. Attention to the graph nature of the traffic has expanded the types of anomalies that are being sought. We give an overview of several cyber data streams collected at Los Alamos National Laboratory and discuss current work in modeling the graph dynamics of traffic over the network. We consider global properties and local properties within the communication graph. A method for monitoring relative entropy on multiple correlated properties is discussed in detail.

Vander Wiel, Scott A [Los Alamos National Laboratory; Storlie, Curtis B [Los Alamos National Laboratory; Sandine, Gary [Los Alamos National Laboratory; Hagberg, Aric A [Los Alamos National Laboratory; Fisk, Michael [Los Alamos National Laboratory

2011-01-11T23:59:59.000Z

71

Regular Monthly Mean Temperatures of Earth's Oceans from Satellites  

Science Conference Proceedings (OSTI)

Comparisons of satellite-derived monthly mean sea surface temperature anomalies with National Marine Fisheries Service (NMFS) ship-derived monthly mean sea surface temperature anomalies over the North Pacific Ocean reveal some encouraging ...

A. E. Strong; J. A. Pritchard

1980-06-01T23:59:59.000Z

72

Passive analysis of TCP anomalies  

Science Conference Proceedings (OSTI)

In this paper, we focus on passive measurements of TCP traffic. We propose a heuristic technique to classify TCP anomalies, i.e., segments that have a sequence number different from the expected one, such as out-of-sequence and duplicate segments. Since ... Keywords: TCP, Traffic measurements

Marco Mellia; Michela Meo; Luca Muscariello; Dario Rossi

2008-10-01T23:59:59.000Z

73

Bulk viscosity and the conformal anomaly in the pion gas  

E-Print Network (OSTI)

We calculate the bulk viscosity of the massive pion gas within Unitarized Chiral Perturbation Theory. We obtain a low temperature peak arising from explicit conformal breaking due to the pion mass and another peak near the critical temperature, dominated by the conformal anomaly through gluon condensate terms. The correlation between bulk viscosity and conformal breaking supports a recent QCD proposal. We discuss the role of resonances, heavier states and large-$N_c$ counting.

D. Fernandez-Fraile; A. Gomez Nicola

2008-09-26T23:59:59.000Z

74

A New Geothermal Anomaly In Nicaragua | Open Energy Information  

Open Energy Info (EERE)

A New Geothermal Anomaly In Nicaragua A New Geothermal Anomaly In Nicaragua Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A New Geothermal Anomaly In Nicaragua Details Activities (0) Areas (0) Regions (0) Abstract: The information acquired during reconnaissance surface exploration in Nicaragua suggests a large geothermal reservoir in the region of Masaya-Nandaime. The exploration programme included geological, geophysical, geochemical, as well as hydrogeological investigations. Integration of the results from various disciplines permitted postulation of a conceptual model of the reservoir and of the thermal regime within the zone immediately above and around the reservoir. The reservoir with a temperature in excess of 200°C is emplaced at a depth between 2 and 4 km

75

Statistics and Dynamics of Persistent Anomalies  

Science Conference Proceedings (OSTI)

Persistent anomalies with recurrent spatial patterns play an important role in the atmosphere's low-frequency variability. We establish a connection between statistical and dynamical methods of description and prediction of persistent anomalies. ...

Kingtse C. Mo; Michael Ghil

1987-03-01T23:59:59.000Z

76

Anomaly detection and diagnosis in grid environments  

Science Conference Proceedings (OSTI)

Identifying and diagnosing anomalies in application behavior is critical to delivering reliable application-level performance. In this paper we introduce a strategy to detect anomalies and diagnose the possible reasons behind them. Our approach extends ...

Lingyun Yang; Chuang Liu; Jennifer M. Schopf; Ian Foster

2007-11-01T23:59:59.000Z

77

Dynamics of the Extratropical Response to a Tropical Atlantic SST Anomaly  

Science Conference Proceedings (OSTI)

Previous atmospheric general circulation model (AGCM) experiments revealed that atmospheric responses to a tropical Atlantic sea surface temperature anomaly (SSTA) were asymmetric with respect to the sign of the SSTA. A positive SSTA produced a ...

Shuanglin Li; Walter A. Robinson; Martin P. Hoerling; Klaus M. Weickmann

2007-02-01T23:59:59.000Z

78

Hawking radiation via anomaly cancellation for the black holes of five-dimensional minimal gauged supergravity  

E-Print Network (OSTI)

The anomaly cancellation method proposed by Wilczek et al. is applied to the general charged rotating black holes in five-dimensional minimal gauged supergravity. Thus Hawking temperature and fluxes are found. The Hawking ...

Porfyriadis, Achilleas P.

79

The Role of the “Atmospheric Bridge” in Linking Tropical Pacific ENSO Events to Extratropical SST Anomalies  

Science Conference Proceedings (OSTI)

The role of the atmospheric circulation as a “bridge” between sea surface temperature (SST) anomalies in the tropical Pacific and those in the midlatitude northern oceans is assessed. The key processes associated with this atmospheric bridge are ...

Ngar-Cheung Lau; Mary Jo Nath

1996-09-01T23:59:59.000Z

80

Meridional and Downward Propagation of Atmospheric Circulation Anomalies. Part II: Southern Hemisphere Cold Season Variability  

Science Conference Proceedings (OSTI)

As in the Northern Hemisphere, there exists a simultaneous poleward propagation of temperature anomalies in the stratosphere and equatorward propagation in the troposphere in the Southern Hemisphere’s cold season. It takes about 110 days for ...

R-C. Ren; Ming Cai

2008-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

On the Structure and Dynamics of Monthly Mean Sea Level Anomalies along the Pacific Coast of North and South America  

Science Conference Proceedings (OSTI)

The behavior and relationship of anomalies of monthly mean sea level, coastal sea surface temperature and alongshore wind stress for the eastern Pacific Ocean during the period 1950–74 have been studied. Sea level and temperature records from ...

D. B. Enfield; J. S. Allen

1980-04-01T23:59:59.000Z

82

Sensitivity of Tropical Tropospheric Temperature to Sea Surface Temperature Forcing  

Science Conference Proceedings (OSTI)

During El Niño, there are substantial tropospheric temperature anomalies across the entire tropical belt associated with the warming of sea surface temperatures (SSTs) in the central and eastern Pacific. The quasi-equilibrium tropical circulation ...

Hui Su; J. David Neelin; Joyce E. Meyerson

2003-05-01T23:59:59.000Z

83

Prediction of Spring Elbe Discharge Based on Stable Teleconnections with Winter Global Temperature and Precipitation  

Science Conference Proceedings (OSTI)

The predictability of Elbe streamflow anomalies during spring is examined using previous winter sea surface temperature (SST), temperature over land (TT), and precipitation (PP) anomalies. Based on running correlation analysis, the authors ...

Monica Ionita; Gerrit Lohmann; Norel Rimbu

2008-12-01T23:59:59.000Z

84

Anomalies of Nuclear Criticality, Revision 6  

SciTech Connect

This report is revision 6 of the Anomalies of Nuclear Criticality. This report is required reading for the training of criticality professionals in many organizations both nationally and internationally. This report describes many different classes of nuclear criticality anomalies that are different than expected.

Clayton, E. D.; Prichard, Andrew W.; Durst, Bonita E.; Erickson, David; Puigh, Raymond J.

2010-02-19T23:59:59.000Z

85

Machine learning for host-based anomaly detection  

Science Conference Proceedings (OSTI)

Anomaly detection techniques complement, signature based methods for intrusion detection. Machine learning approaches are applied to anomaly detection for automated learning and detection. Traditional host-based anomaly detectors model system call sequences ...

Gaurav Tandon / Philip K. Chan

2008-01-01T23:59:59.000Z

86

Ensembles of AGCM Two-Tier Predictions and Simulations of the Circulation Anomalies during Winter 1997–98  

Science Conference Proceedings (OSTI)

The impact of sea surface temperature (SST) anomalies on the extratropical circulation during the El Niño winter of 1997–98 is studied through atmospheric general circulation model (AGCM) integrations. The model’s midlatitude response is found to ...

John D. Farrara; Carlos R. Mechoso; Andrew W. Robertson

2000-10-01T23:59:59.000Z

87

The Role of Oceanic Heat Advection in the Evolution of Tropical North and South Atlantic SST Anomalies  

Science Conference Proceedings (OSTI)

The role of horizontal oceanic heat advection in the generation of tropical North and South Atlantic sea surface temperature (SST) anomalies is investigated through an analysis of the oceanic mixed layer heat balance. It is found that SST ...

Gregory R. Foltz; Michael J. McPhaden

2006-12-01T23:59:59.000Z

88

Potential Vorticity Anomalies Associated with Squall Lines  

Science Conference Proceedings (OSTI)

This study involves observations and model simulations of potential vorticity anomalies in the wake of midlatitude squall lines. Using data from the Oklahoma–Kansas PRE-STORM experiment, we analyze potential vorticity fields near two squall lines—...

Rolf F. A. Hertenstein; Wayne H. Schubert

1991-07-01T23:59:59.000Z

89

Science as an Anomaly-Driven Enterprise  

E-Print Network (OSTI)

Anomalous data lead to scientific discoveries. Although machine learning systems can be forced to resolve anomalous data, these systems use general learning algorithms to do so. To determine whether anomaly-driven approaches to discovery produce more accurate models than the standard approaches, we built a program called Kalpana. We also used Kalpana to explore means for identifying those anomaly resolutions that are acceptable to domain experts. Our experiments indicated that anomaly-driven approaches can lead to a richer set of model revisions than standard methods. Additionally we identified semantic and syntactic measures that are significantly correlated with the acceptability of model revisions. These results suggest that by interpreting data within the context of a model and by interpreting model revisions within the context of domain knowledge, discovery systems can more readily suggest accurate and acceptable anomaly resolutions.

Will Bridewell; Will Bridewell Phd

2004-01-01T23:59:59.000Z

90

Reanalysis of the Reactor Neutrino Anomaly  

E-Print Network (OSTI)

We reanalyze the reactor neutrino anomaly, wherein it is suggested that only about 94% of the emitted antineutrino flux was detected in short baseline experiments. We find that the form of the corrections that lead to the anomaly are very uncertain for the 30% of the flux that is determined by forbidden beta-decay transitions. This uncertainty was estimated in four ways and is larger than the size of the anomaly, and is unlikely to be reduced without accurate direct measurements of the antineutrino flux. Neutrino physics conclusions based on the original anomaly need to be revisited, as do oscillation analyses that assumed that the antineutrino flux is known to better than ~5%.

A. C. Hayes; J. L. Friar; G. T. Garvey; Guy Jonkmans

2013-09-17T23:59:59.000Z

91

Icelandic Coastal Sea Surface Temperature Records Constructed: Putting the Pulse on Air–Sea–Climate Interactions in the Northern North Atlantic. Part I: Comparison with HadISST1 Open-Ocean Surface Temperatures and Preliminary Analysis of Long-Term Patterns and Anomalies of SSTs around Iceland  

Science Conference Proceedings (OSTI)

A new comprehensive record of long-term Icelandic sea surface temperature measurements, which have been updated and filled in with reference to air temperature records, is presented. The new SST series reveal important features of the variability ...

Edward Hanna; Trausti Jónsson; Jon Ólafsson; Hedinn Valdimarsson

2006-11-01T23:59:59.000Z

92

The Optimal Growth of Tropical Sea Surface Temperature Anomalies  

Science Conference Proceedings (OSTI)

It is argued from SST observations for the period 1950–90 that the tropical Indo-Pacific ocean-atmosphere system may be described as a stable linear dynamical system driven by spatially coherent Gaussian white noise. Evidence is presented that ...

Cécile Penland; Prashant D. Sardeshmukh

1995-08-01T23:59:59.000Z

93

Annual Temperature Anomalies for Three Latitude Bands, 1900-2012  

NLE Websites -- All DOE Office Websites (Extended Search)

cover 30%, 40%, and 30% of the global area, respectively. image image image data Data Graphics Graphics Reference Hansen, J.E., R. Ruedy, M. Sato, and K. Lo. 2013. NASA GISS...

94

Specifying Monthly Mean Surface Temperatures in Canada and Alaska from the 500 mb Height Field  

Science Conference Proceedings (OSTI)

Specification equations for monthly mean air temperature anomalies at 68 surface stations in Canada and Alaska are derived by applying a forward selection screening procedure to simultaneous monthly mean 500 mb height anomalies at 110 grid points ...

William H. Klein; Amir Shabbar; Runhua Yang

1989-06-01T23:59:59.000Z

95

Trace anomaly and Hawking effect in 2D dilaton gravity theories  

E-Print Network (OSTI)

We investigate the classical and semiclassical features of generic 2D, matter-coupled, dilaton gravity theories. In particular, we show that the mass, the temperature and the flux of Hawking radiation associated with 2D black holes are invariant under dilaton-dependent Weyl rescalings of the metric. The relationship between quantum anomalies and Hawking radiation is discussed.

Mariano Cadoni

1996-12-16T23:59:59.000Z

96

Radioactive anomaly discrimination from spectral ratios  

DOE Patents (OSTI)

A method for discriminating a radioactive anomaly from naturally occurring radioactive materials includes detecting a first number of gamma photons having energies in a first range of energy values within a predetermined period of time and detecting a second number of gamma photons having energies in a second range of energy values within the predetermined period of time. The method further includes determining, in a controller, a ratio of the first number of gamma photons having energies in the first range and the second number of gamma photons having energies in the second range, and determining that a radioactive anomaly is present when the ratio exceeds a threshold value.

Maniscalco, James; Sjoden, Glenn; Chapman, Mac Clements

2013-08-20T23:59:59.000Z

97

Holography and Anomaly Matching for Resonances  

E-Print Network (OSTI)

We derive a universal relation for the transverse part of triangle anomalies within a class of theories whose gravity dual is described by the Yang-Mills-Chern-Simons theory. This relation provides a set of sum rules involving the masses, decay constants and couplings between resonances, and leads to the formulas for the matrix elements of the vector and axial currents in the presence of the soft electromagnetic field. We also discuss that this relation is valid in real QCD at least approximately. This may be regarded as the anomaly matching for resonances as an analogue of that for the massless excitations in QCD.

Dam T. Son; Naoki Yamamoto

2010-10-04T23:59:59.000Z

98

Gravity Waves Generated by Sheared Potential Vorticity Anomalies  

Science Conference Proceedings (OSTI)

The gravity waves (GWs) generated by potential vorticity (PV) anomalies in a rotating stratified shear flow are examined under the assumptions of constant vertical shear, two-dimensionality, and unbounded domain. Near a PV anomaly, the associated ...

François Lott; Riwal Plougonven; Jacques Vanneste

2010-01-01T23:59:59.000Z

99

An empirical comparison of monitoring algorithms for access anomaly detection  

Science Conference Proceedings (OSTI)

One of the major disadvantages of parallel programming with shared memory is the nondeterministic behavior caused by uncoordinated access to shared variables, known as access anomalies. Monitoring program execution to detect access anomalies ...

A. Dinning; E. Schonberg

1990-02-01T23:59:59.000Z

100

On the Prediction of India Monsoon Rainfall Anomalies  

Science Conference Proceedings (OSTI)

A complex of anomalies in the premonsoon large-scale circulation setting heralds the interannual variability of India summer monsoon rainfall. The most prominent precursors of precipitation anomalies are the latitude position of the upper-air ...

Stefan Hastenrath

1987-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

A Pronounced Upper-Tropospheric Warm Anomaly Encountered by the NOAA G-IV Aircraft in the Vicinity of Deep Convection  

Science Conference Proceedings (OSTI)

Recent flights near deep convection by the National Oceanic and Atmospheric Administration's Gulfstream-IV surveillance aircraft have occasionally experienced significant positive temperature anomalies that sometimes impact the aircraft ...

Robert Rogers; Sim Aberson; John Kaplan; Stan Goldenberg

2002-01-01T23:59:59.000Z

102

ADWICE – anomaly detection with real-time incremental clustering  

Science Conference Proceedings (OSTI)

Anomaly detection, detection of deviations from what is considered normal, is an important complement to misuse detection based on attack signatures. Anomaly detection in real-time places hard requirements on the algorithms used, making many proposed ... Keywords: adaptability, anomaly detection, clustering, intrusion detection, realtime

Kalle Burbeck; Simin Nadjm-Tehrani

2004-12-01T23:59:59.000Z

103

Challenging the supremacy of traffic matrices in anomaly detection  

Science Conference Proceedings (OSTI)

Multiple network-wide anomaly detection techniques proposed in the literature define an anomaly as a statistical outlier in aggregated network traffic. The most popular way to aggregate the traffic is as a Traffic Matrix, where the traffic is ... Keywords: anomaly detection, traffic aggregation

Augustin Soule; Fernando Silveira; Haakon Ringberg; Christophe Diot

2007-10-01T23:59:59.000Z

104

Data mining methods for anomaly detection KDD-2005 workshop report  

Science Conference Proceedings (OSTI)

For many applications, data mining systems are required to detect anomalous (abnormal, unmodeled, or unexpected) observations. This has so far proven to be a difficult challenge because anomalies are usually considered to be "non-normal" observations, ... Keywords: anomalies, data mining, detection of anomalies in data, machine learning

Dragos Margineantu; Stephen Bay; Philip Chan; Terran Lane

2005-12-01T23:59:59.000Z

105

Life Cycles of Persistent Anomalies. Part II: The Development of Persistent Negative Height Anomalies over the North Pacific Ocean  

Science Conference Proceedings (OSTI)

The present study extends our previous work on the life cycles of persistent anomalies by providing more comprehensive analyses of the synoptic and dynamical characteristics associated with the developments of the anomalies. We focus here on the ...

Randall M. Dole; Robert X. Black

1990-04-01T23:59:59.000Z

106

Capacitance Probe for Detection of Anomalies in Nonmetallic Plastic Pipe  

NLE Websites -- All DOE Office Websites (Extended Search)

Capacitance Probe for Detection of Anomalies in Capacitance Probe for Detection of Anomalies in Nonmetallic Plastic Pipe Opportunity The Department of Energy's National Energy Technology Laboratory (NETL) is seeking collaborative research and licensing partners interested in implementing United States Patent Number 7,839,282 entitled "Capacitance Probe for Detection of Anomalies in Nonmetallic Plastic Pipe." Disclosed in this patent is an analysis of materials using a capacitive sensor to detect anomalies in nonmetallic plastic pipe through comparison of measured capacitances. The capacitive sensor is used in conjunction with a capacitance measurement device, a location device, and a processor to generate a capacitance versus location output for the detection and localization of anomalies

107

Flavorful hybrid anomaly-gravity mediation  

SciTech Connect

We consider supersymmetric models where anomaly and gravity mediation give comparable contributions to the soft terms and discuss how this can be realized in a five-dimensional brane world. The gaugino mass pattern of anomaly mediation is preserved in such a hybrid setup. The flavorful gravity-mediated contribution cures the tachyonic slepton problem of anomaly mediation. The supersymmetric flavor puzzle is solved by alignment. We explicitly show how a working flavor-tachyon link can be realized with Abelian flavor symmetries and give the characteristic signatures of the framework, including O(1) slepton mass splittings between different generations and between doublets and singlets. This provides opportunities for same flavor dilepton edge measurements with missing energy at the Large Hadron Collider (LHC). Rare lepton decay rates could be close to their current experimental limit. Compared to pure gravity mediation, the hybrid model is advantageous because it features a heavy gravitino which can avoid the cosmological gravitino problem of gravity-mediated models combined with leptogenesis.

Gross, Christian; Hiller, Gudrun [Institut fuer Physik, Technische Universitaet Dortmund, D-44221 Dortmund (Germany)

2011-05-01T23:59:59.000Z

108

Lag Relationships Involving Tropical Sea Surface Temperatures  

Science Conference Proceedings (OSTI)

A long historical record (100 years) of monthly sea surface temperature anomalies from the Comprehensive Ocean–Atmosphere Data Set was used to examined the lag relationships between different locations in the global Tropics. Application of ...

John R. Lanzante

1996-10-01T23:59:59.000Z

109

Core-softened Fluids, Water-like Anomalies and the Liquid-Liquid Critical Points  

E-Print Network (OSTI)

Molecular dynamics simulations are used to examine the relationship between water-like anomalies and the liquid-liquid critical point in a family of model fluids with multi-Gaussian, core-softened pair interactions. The core-softened pair interactions have two length scales, such that the longer length scale associated with a shallow, attractive well is kept constant while the shorter length scale associated with the repulsive shoulder is varied from an inflexion point to a minimum of progressively increasing depth. As the shoulder well depth increases, the pressure required to form the high density liquid decreases and the temperature up to which the high-density liquid is stable increases, resulting in the shift of the liquid-liquid critical point to much lower pressures and higher temperatures. The pair correlation entropy is computed to show that the excess entropy anomaly diminishes when the shoulder well depth increases. Excess entropy scaling of diffusivity in this class of fluids is demonstrated, showing that decreasing strength of the excess entropy anomaly with increasing shoulder depth results in the progressive loss of water-like thermodynamic, structural and transport anomalies. Instantaneous normal mode analysis was used to index the overall curvature distribution of the fluid and the fraction of imaginary frequency modes was shown to correlate well with the anomalous behaviour of the diffusivity and the pair correlation entropy. The results suggest in the case of core-softened potentials, in addition to the presence of two length scales, energetic and entropic effects associated with local minima and curvatures of the pair interaction play an important role in determining the presence of water-like anomalies and the liquid-liquid phase transition.

Evy Salcedo; Alan B. de Oliveira; Ney M. Barraz Jr; Charusita Chakravarty; Marcia C. Barbosa

2011-03-21T23:59:59.000Z

110

Lester Meadow, Washington- A Geothermal Anomaly | Open Energy Information  

Open Energy Info (EERE)

Lester Meadow, Washington- A Geothermal Anomaly Lester Meadow, Washington- A Geothermal Anomaly Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Lester Meadow, Washington- A Geothermal Anomaly Details Activities (2) Areas (1) Regions (0) Abstract: Exploration of the Lester Hot Springs for geothermal potential found that a natural meadow adjacent to the hot springs represents a geothermal anomaly. This conclusion is supported by an anomaly in a thermal infrared survey, high levels of fluorine and boron from a soil survey, and the lack forest cover in the Lester meadow. These vegetation anomalies may be more common in the Cascade Mountains than realized and may be a useful indicator of the extent of geothermal activity at a location. Burlington Northern (BN) started conducting geothermal exploration in 1974 once the

111

Machine Learning for Host-based Anomaly Detection by  

E-Print Network (OSTI)

Anomaly detection techniques complement signature based methods for intrusion detection. Machine learning approaches are applied to anomaly detection for automated learning and detection. Traditional host-based anomaly detectors model system call sequences to detect novel attacks. This dissertation makes four key contributions to detect host anomalies. First, we present an unsupervised approach to clean training data using novel representations for system call sequences. Second, supervised learning with system call arguments and other attributes is proposed for enriched modeling. Third, techniques to increase model coverage for improved accuracy are presented. Fourth, we propose spatio-temporal modeling to detect suspicious behavior for mobile hosts. Experimental results on various data sets indicate that our techniques are more effective than traditional methods in capturing attack-based host anomalies. Additionally, our supervised methods create succint models and the computational overhead incurred is reasonable for an online anomaly detection system. iii Acknowledgements An ancient saying in Sanskrit: Matri devo bhava (revere your mother), pitri devo

Gaurav Tandon; Gaurav Tandon; Philip K. Chan, Ph.D.; Marius C. Silaghi, Ph.D.; Georgios C. Anagnostopoulos, Ph.D.; Gaurav Tandon; Dissertation Advisor; Philip K. Chan, Ph.D.

2008-01-01T23:59:59.000Z

112

Global Interannual Variations in Sea Surface Temperature and Land Surface Vegetation, Air Temperature, and Precipitation  

Science Conference Proceedings (OSTI)

Anomalies in global vegetation greenness, SST, land surface air temperature, and precipitation exhibit linked, low-frequency interannual variations. These interannual variations were detected and analyzed for 1982–90 with a multivariate spectral ...

Sietse O. Los; G. James Collatz; Lahouari Bounoua; Piers J. Sellers; Compton J. Tucker

2001-04-01T23:59:59.000Z

113

The Impact of Tropical Indian Ocean Variability on Summer Surface Air Temperature in China  

Science Conference Proceedings (OSTI)

Evidence is presented that the boreal summer surface air temperature over south China and northeast China is remotely influenced by the Indian Ocean Basin mode (IOBM) sea surface temperature (SST) anomalies. Above-normal temperature in south China ...

Kaiming Hu; Gang Huang; Ronghui Huang

2011-10-01T23:59:59.000Z

114

Surface Air Temperature Variations in the Amazon Region and Its Borders during This Century  

Science Conference Proceedings (OSTI)

Monthly average surface air temperature records from 17 stations in the Brazilian Amazon from 1913 to 1995 were used to compute annual air temperature means. The data were converted into temperature anomalies, as the differences between annual ...

R. L. Victoria; L. A. Martinelli; J. M. Moraes; M. V. Ballester; A. V. Krusche; G. Pellegrino; R. M. B. Almeida; J. E. Richey

1998-05-01T23:59:59.000Z

115

3D Magnetotelluric Characterization Of The Geothermal Anomaly...  

Open Energy Info (EERE)

where it can be associated with structural conditions, especially to the extensional event suffered by the island after the Alpine Orogeny. However, the origin of this anomaly...

116

IN SEARCH FOR THERMAL ANOMALIES IN THE COSO GEOTHERMAL FIELD...  

Open Energy Info (EERE)

IN SEARCH FOR THERMAL ANOMALIES IN THE COSO GEOTHERMAL FIELD (CALIFORNIA) USING REMOTE SENSING AND FIELD DATA Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home...

117

A Shallow Attenuating Anomaly Inside The Ring Fracture Of The...  

Open Energy Info (EERE)

Shallow Attenuating Anomaly Inside The Ring Fracture Of The Valles Caldera, New Mexico Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Shallow...

118

Teleconnective Response of the Pacific–North American Region Atmosphere to Large Central Equatorial Pacific SST Anomalies  

Science Conference Proceedings (OSTI)

A prominent year-round ensemble response to a global sea surface temperature (SST) anomaly field fixed to that for January 1992 (near the peak of a major warm El Niño–Southern Oscillation episode) was observed in a 20-yr integration of the ...

Robert E. Livezey; Michiko Masutani; Ants Leetmaa; Hualan Rui; Ming Ji; Arun Kumar

1997-08-01T23:59:59.000Z

119

The Puzzle of the Flyby Anomaly  

E-Print Network (OSTI)

Close planetary flybys are frequently employed as a technique to place spacecraft on extreme solar system trajectories that would otherwise require much larger booster vehicles or may not even be feasible when relying solely on chemical propulsion. The theoretical description of the flybys, referred to as gravity assists, is well established. However, there seems to be a lack of understanding of the physical processes occurring during these dynamical events. Radio-metric tracking data received from a number of spacecraft that experienced an Earth gravity assist indicate the presence of an unexpected energy change that happened during the flyby and cannot be explained by the standard methods of modern astrodynamics. This puzzling behavior of several spacecraft has become known as the flyby anomaly. We present the summary of the recent anomalous observations and discuss possible ways to resolve this puzzle.

Slava G. Turyshev; Viktor T. Toth

2009-07-23T23:59:59.000Z

120

Chameleon effect and the Pioneer anomaly  

E-Print Network (OSTI)

The possibility that the apparent anomalous acceleration of the Pioneer 10 and 11 spacecraft may be due, at least in part, to a chameleon field effect is examined. A small spacecraft, with no thin shell, can have a more pronounced anomalous acceleration than a large compact body, such as a planet, having a thin shell. The chameleon effect seems to present a natural way to explain the differences seen in deviations from pure Newtonian gravity for a spacecraft and for a planet, and appears to be compatible with the basic features of the Pioneer anomaly, including the appearance of a jerk term. However, estimates of the size of the chameleon effect indicate that its contribution to the anomalous acceleration is negligible. We conclude that any inverse-square component in the anomalous acceleration is more likely caused by an unmodelled reaction force from solar-radiation pressure, rather than a chameleon field effect.

John D. Anderson; J. R. Morris

2012-04-12T23:59:59.000Z

Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Time discretisation applied to anomaly detection in a marine engine  

Science Conference Proceedings (OSTI)

An introduction to the problems associated with anomaly detection in a marine engine, explaining the benefits that the SAX representation brings to the field. Despite limitations in accuracy of the SAX representation in comparison with the normalised ... Keywords: anomaly detection, discretisation, symbolic aggregate approximation, time series

Ian Morgan; Honghai Liu; George Turnbull; David Brown

2007-09-01T23:59:59.000Z

122

Detection of process anomalies using an improved statistical learning framework  

Science Conference Proceedings (OSTI)

Maintenance technologies have been progressed from a time-based to a condition-based manner. The fundamental idea of condition-based maintenance (CBM) is built on the real-time diagnosis of impending failures and/or the prognosis of residual lifetime ... Keywords: Condition-based maintenance, Kernel regression, Process anomalies, Sensor anomalies, Statistical learning

Sang Ha An; Gyunyoung Heo; Soon Heung Chang

2011-03-01T23:59:59.000Z

123

EbAT: online methods for detecting utility cloud anomalies  

Science Conference Proceedings (OSTI)

The online detection of anomalies is a vital element of operations in datacenters and in utility clouds like Amazon EC2. Given ever-increasing data center sizes coupled with the complexities of systems software, applications, and workload patterns, such ... Keywords: anomaly detection, entropy, utility cloud, utility datacenter

Chengwei Wang

2009-11-01T23:59:59.000Z

124

ENSO anomalies over the Western United States: present and future patterns in regional climate simulations  

Science Conference Proceedings (OSTI)

Surface temperature, precipitation, specific humidity and wind anomalies associated with the warm and cold phases of ENSO simulated by WRF and HadRM are examined for the present and future decades. WRF is driven by ECHAM5 and CCSM3, respectively, and HadRM is driven by HadCM3. For the current decades, all simulations show some capability in resolving the observed warm-dry and coolwet teleconnection patterns over the PNW and the Southwest U.S. for warm and cold ENSO. Differences in the regional simulations originate primarily from the respective driving fields. For the future decades, the warm-dry and cool-wet teleconnection patterns in association with ENSO are still represented in ECHAM5-WRF and HadRM. However, there are indications of changes in the ENSO teleconnection patterns for CCSM3-WRF in the future, with wet anomalies dominating in the PNW and the Southwest U.S. for both warm and cold ENSO, in contrast to the canonical patterns of precipitation anomalies. Interaction of anomalous wind flow with local terrain plays a critical role in the generation of anomalous precipitation over the western U.S. Anomalous dry conditions are always associated with anomalous airflow that runs parallel to local mountains and wet conditions with airflow that runs perpendicular to local mountains. Future changes in temperature and precipitation associated with the ENSO events in the regional simulations indicate varying responses depending on the variables examined as well as depending on the phase of ENSO.

Zhang, Yongxin; Qian, Yun; Duliere, Valerie; Salathe, E.; Leung, Lai-Yung R.

2012-01-03T23:59:59.000Z

125

Seasonal Climatic Anomaly Types for the North Pacific Sector and Western North America  

Science Conference Proceedings (OSTI)

Recurrent patterns of seasonal sea level pressure anomaly over the North Pacific sector and western North America are objectively identified using correlation coefficients between anomaly maps as a pattern recognition device. Five major anomaly ...

T. J. Blasing; G. R. Lofgren

1980-06-01T23:59:59.000Z

126

Climate from borehole data: Energy fluxes and temperatures since Hugo Beltrami  

E-Print Network (OSTI)

anomaly. The vertical profile of the temperature anomaly, depends on the history of energy balance. Wang, and R. L. Bras, Energy balance at the Earth's surface: Heat flux history in eastern CanadaClimate from borehole data: Energy fluxes and temperatures since 1500 Hugo Beltrami Environmental

Beltrami, Hugo

127

Solar Eclipse Anomalies and Wave Refraction  

E-Print Network (OSTI)

There is some inconclusive evidence that measurement devices sensitive to local gravitation exhibit anomalous behaviour during solar eclipses. We investigate if these findings can be incorporated into the standard general relativistic model of gravitation. The General Theory of Relativity (GTR) describes gravitation as the response of an object to local spacetime curvature. Gravitational waves travelling at the speed of light are then a necessary mechanism to maintain the required consistency between local curvature and distant gravitating mass. Gravitational waves will certainly be subject to refraction by bodies such as the moon and we explore if such an effect can result in an error in the apparent position of the sources and thereby give rise to the characteristic pattern of response associated with the eclipse anomaly. It is found there are phenomenological similarities, but only if gravitational waves are considered not merely to respond to spacetime curvature but are also significantly affected by the presence of mass, perhaps in a manner analogous to electromagnetic waves propagating through matter.

Alasdair Macleod

2006-10-23T23:59:59.000Z

128

The Southern Oscillation and Indonesian Sea Surface Temperature  

Science Conference Proceedings (OSTI)

The relationship of the Southern Oscillation and El Niño phenomena to sea surface temperature anomalies in the Indonesian region is investigated. The three are closely related and the relationship has a strong annual cycle. The Indonesian sea ...

N. Nicholls

1984-03-01T23:59:59.000Z

129

Systematic construction of anomaly detection benchmarks from real data  

Science Conference Proceedings (OSTI)

Research in anomaly detection suffers from a lack of realistic and publicly-available problem sets. This paper discusses what properties such problem sets should possess. It then introduces a methodology for transforming existing classification data ...

Andrew F. Emmott, Shubhomoy Das, Thomas Dietterich, Alan Fern, Weng-Keen Wong

2013-08-01T23:59:59.000Z

130

3D Magnetotelluric Characterization Of The Geothermal Anomaly In The  

Open Energy Info (EERE)

Magnetotelluric Characterization Of The Geothermal Anomaly In The Magnetotelluric Characterization Of The Geothermal Anomaly In The Llucmajor Aquifer System (Majorca, Spain) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: 3D Magnetotelluric Characterization Of The Geothermal Anomaly In The Llucmajor Aquifer System (Majorca, Spain) Details Activities (0) Areas (0) Regions (0) Abstract: In the Llucmajor aquifer system (Majorca Island, Spain) some geothermal evidences have appeared. This phenomenon is not isolated to Majorca and it is present in other areas, where it can be associated with structural conditions, especially to the extensional event suffered by the island after the Alpine Orogeny. However, the origin of this anomaly in Llucmajor is not well known, and there is no surface geological evidence of

131

Barotropic Stationary States and Persistent Anomalies in the Atmosphere  

Science Conference Proceedings (OSTI)

A robust algorithm, capable of finding nearly stationary solutions of the unforced barotropic vorticity equation near to observed atmospheric streamfunctions, is presented. When applied to observed persistent anomaly patterns, the nearly ...

Jeffrey L. Anderson

1992-09-01T23:59:59.000Z

132

Spatiotemporal anomaly detection in gas monitoring sensor networks  

Science Conference Proceedings (OSTI)

In this paper, we use Bayesian Networks as a means for unsupervised learning and anomaly (event) detection in gas monitoring sensor networks for underground coal mines. We show that the Bayesian Network model can learn cyclical baselines for gas concentrations, ...

X. Rosalind Wang; Joseph T. Lizier; Oliver Obst; Mikhail Prokopenko; Peter Wang

2008-01-01T23:59:59.000Z

133

Filters and Approximate Confidence Intervals for Interpreting Rainfall Anomaly indices  

Science Conference Proceedings (OSTI)

The rainfall anomaly index (RAI) has been widely used to study variations over time in Sahelian rainfall. Its interpretation is often complicated by excessive missing data and changes in station network, both of which prevent a precise ...

L. Bärring; M. Hulme

1991-08-01T23:59:59.000Z

134

The Relationship of Highly Reflective Clouds to Tropical Climate Anomalies  

Science Conference Proceedings (OSTI)

The interannual variability of tropical convection related to the Southern Oscillation (SO) and regional climate anomalies is studied from satellite-derived estimates of highly reflective clouds (HRC) during 1971–87. The novel HRC data bank ...

Stefan Hastenrath

1990-03-01T23:59:59.000Z

135

The Opening of the Tasman Sea: A Gravity Anomaly Animation  

Science Conference Proceedings (OSTI)

The first plate tectonic gravity anomaly grid animation using data from the Tasman Sea is presented. In this animation the tectonic elements are represented by their respective gravity fields, based on recent marine-satellite-derived gravity ...

C. Gaina; R. D. Müller; W. R. Roest; P. Symonds

1998-01-01T23:59:59.000Z

136

Resampling approach for anomaly detection in multispectral images  

Science Conference Proceedings (OSTI)

We propose a novel approach for identifying the 'most unusual' samples in a data set, based on a resampling of data attributes. The resampling produces a 'background class' and then binary classification is used to distinguish the original training set from the background. Those in the training set that are most like the background (i e, most unlike the rest of the training set) are considered anomalous. Although by their nature, anomalies do not permit a positive definition (if I knew what they were, I wouldn't call them anomalies), one can make 'negative definitions' (I can say what does not qualify as an interesting anomaly). By choosing different resampling schemes, one can identify different kinds of anomalies. For multispectral images, anomalous pixels correspond to locations on the ground with unusual spectral signatures or, depending on how feature sets are constructed, unusual spatial textures.

Theiler, J. P. (James P.); Cai, D. (David)

2003-01-01T23:59:59.000Z

137

Predictability of Java Monsoon Rainfall Anomalies: A Case Study  

Science Conference Proceedings (OSTI)

A substantial portion of the interannual variability of rainfall at Jakarta, Java, can be predicted from antecedent pressure anomalies at Darwin, northern Australia; the pressure persistence, the concurrent correlation of pressure and rainfall, ...

Stefan Hastenrath

1987-01-01T23:59:59.000Z

138

Large Amplitude Flow Anomalies in Northern Hemisphere Midlatitudes  

Science Conference Proceedings (OSTI)

The composite of large amplitude flow anomalies identified from extremely large amplitudes of the planetary-scale waves is examined in terms of the temporal and spatial evolution of both the large-scale flow and the storm tracks. The ...

Anthony R. Hansen; Alfonso Sutera

1995-06-01T23:59:59.000Z

139

Simulations of Persistent North Pacific Circulation Anomalies and Interhemispheric Teleconnections  

Science Conference Proceedings (OSTI)

Evidence is presented from a composite analysis of a 14-year general circulation model simulation, that persistent North Pacific (PNP) circulation anomalies during boreal winter are part of a larger-scale meridional development extending into the ...

R. W. Higgins; S. D. Schubert

1996-01-01T23:59:59.000Z

140

Climatology of Tropical Intraseasonal Convective Anomalies: 1979–2002  

Science Conference Proceedings (OSTI)

Tropical intraseasonal convective anomalies (TICA) have a central role in subseasonal changes in the coupled ocean–atmosphere system, but the climatology of TICA events has not been properly documented. This study exploits 24 years of outgoing ...

Charles Jones; Leila M. V. Carvalho; R. Wayne Higgins; Duane E. Waliser; J-K. E. Schemm

2004-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Circulation Anomalies Associated with Tropical Convection during Northern Winter  

Science Conference Proceedings (OSTI)

Lagged cross correlations between outgoing longwave radiation (OLR) and National Meteorological Center global analyses are utilized to isolate the preferred upper-level and surface circulation anomalies associated with tropical convection during ...

George N. Kiladis; Klaus M. Weickmann

1992-09-01T23:59:59.000Z

142

The Geographical Distribution and Seasonality of Persistence in Monthly Mean Air Temperatures over the United States  

Science Conference Proceedings (OSTI)

Eighty years of monthly mean station temperatures are used to evaluate the persistence of monthly air temperature anomalies over the United States. The geographical and seasonal dependence of the monthly persistence are described in term of the ...

H. M. van den Dool; W. H. Klein; J. E. Walsh

1986-03-01T23:59:59.000Z

143

The Vertical Structure of Temperature in the Tropics: Different Flavors of El Niño  

Science Conference Proceedings (OSTI)

To explore the vertical coherence of the vertical temperature structure in the atmosphere, an analysis is performed of the full three-dimensional spatial structure of the temperature field monthly mean anomalies from the 40-yr ECMWF Re-Analysis (...

Kevin E. Trenberth; Lesley Smith

2006-10-01T23:59:59.000Z

144

The Signature of ENSO in Global Temperature and Precipitation Fields Derived from the Microwave Sounding Unit  

Science Conference Proceedings (OSTI)

Global temperature anomalies associated with ENSO are investigated, making use of a 13-year record of gridded temperature and precipitation data from the microwave sounding unit (MSU). The warm phase of the ENSO cycle during this period was ...

Elena Yulaeva; John M. Wallace

1994-11-01T23:59:59.000Z

145

Isotopic Anomalies in CP Stars: Helium, Mercury, Platinum, and Calcium  

E-Print Network (OSTI)

We review the classical observational results for isotopic abundance variations for several elements in CP stars. We concentrate on the "newest" anomaly, in calcium. The cosmically very rare isotope, Ca-48 can rival and even dominate the more common, alpha nuclide, Ca-40. Relevant examples are found in the hot, non-magnetic HgMn stars, and the field horizontal-branch star, Feige 86. The calcium anomaly is also present in cool, magnetic stars, including the notorious HD 101065, Przybylski's star.

C. R. Cowley; S. Hubrig; F. Castelli

2007-11-15T23:59:59.000Z

146

Fluid/Gravity Correspondence, Second Order Transport and Gravitational Anomaly  

E-Print Network (OSTI)

We study the transport properties of a relativistic fluid affected by chiral and gauge-gravitational anomalies. The computation is performed in the framework of the fluid/gravity correspondence for a 5 dim holographic model with Chern-Simons terms in the action. We find new anomalous and non anomalous transport coefficients, as well as new contributions to the existing ones coming from the mixed gauge-gravitational anomaly. Consequences for the shear waves dispersion relation are analyzed.

Eugenio Megias; Francisco Pena-Benitez

2013-07-29T23:59:59.000Z

147

CARS Control Anomaly Recognition System: System Concept, Requirements, and Specifications  

Science Conference Proceedings (OSTI)

This report presents results of an initial study aimed at defining the system concept, principal requirements, and functional specification for a control anomaly recognition system (CARS) software tool. The purpose of the CARS software system is to assist nuclear power plant operators in the early detection of faults and anomalies in plant control systems before they cause reactor scrams or component damage. The diagnostic capability technology of CARS can support other process industries' applications b...

2002-04-12T23:59:59.000Z

148

Multivariate forecast of winter monsoon rainfall in India using SST anomaly as a predictor: Neurocomputing and statistical approaches  

E-Print Network (OSTI)

In this paper, the complexities in the relationship between rainfall and sea surface temperature (SST) anomalies during the winter monsoon (November-January) over India were evaluated statistically using scatter plot matrices and autocorrelation functions.Linear as well as polynomial trend equations were obtained and it was observed that the coefficient of determination for the linear trend was very low and it remained low even when polynomial trend of degree six was used. An exponential regression equation and an artificial neural network with extensive variable selection were generated to forecast the average winter monsoon rainfall of a given year using the rainfall amounts and the sea surface temperature anomalies in the winter monsoon months of the previous year as predictors. The regression coefficients for the multiple exponential regression equation were generated using Levenberg-Marquardt algorithm. The artificial neural network was generated in the form of a multiplayer perceptron with sigmoid non-l...

Chattopadhyay, Goutami; Jain, Rajni

2009-01-01T23:59:59.000Z

149

Dielectric anomaly in coupled rotor systems  

E-Print Network (OSTI)

The correlated dynamics of coupled quantum rotors carrying electric dipole moment is theoretically investigated. The energy spectra of coupled rotors as a function of dipolar interaction energy is analytically solved. The calculated dielectric susceptibilities of the system show the peculiar temperature dependence different from that of isolated rotors.

Hiroyuki Shima; Tsuneyoshi Nakayama

2004-07-02T23:59:59.000Z

150

Automatic Construction of Anomaly Detectors from Graphical Models  

Science Conference Proceedings (OSTI)

Detection of rare or previously unseen attacks in cyber security presents a central challenge: how does one search for a sufficiently wide variety of types of anomalies and yet allow the process to scale to increasingly complex data? In particular, creating each anomaly detector manually and training each one separately presents untenable strains on both human and computer resources. In this paper we propose a systematic method for constructing a potentially very large number of complementary anomaly detectors from a single probabilistic model of the data. Only one model needs to be trained, but numerous detectors can then be implemented. This approach promises to scale better than manual methods to the complex heterogeneity of real-life data. As an example, we develop a Latent Dirichlet Allocation probability model of TCP connections entering Oak Ridge National Laboratory. We show that several detectors can be automatically constructed from the model and will provide anomaly detection at flow, sub-flow, and host (both server and client) levels. This demonstrates how the fundamental connection between anomaly detection and probabilistic modeling can be exploited to develop more robust operational solutions.

Ferragut, Erik M [ORNL; Darmon, David M [ORNL; Shue, Craig A [ORNL; Kelley, Stephen [ORNL

2011-01-01T23:59:59.000Z

151

Hg Anomalies In Soils- A Geochemical Exploration Method For Geothermal  

Open Energy Info (EERE)

Hg Anomalies In Soils- A Geochemical Exploration Method For Geothermal Hg Anomalies In Soils- A Geochemical Exploration Method For Geothermal Areas Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Hg Anomalies In Soils- A Geochemical Exploration Method For Geothermal Areas Details Activities (5) Areas (5) Regions (0) Abstract: Hg contents of soils in geothermal areas in the western U.S. were measured and a three-fold distribution was observed: peak, aureole and background. Peak values (up to several 100 ppm Hg) occur in fumaroles of vapour-dominated systems, around hot springs, and in zones overlying steeply dipping, hot-water aquifers. Aureoic values (up to several 100 ppb Hg) are found in zones surrounding the peak areas and delineate areas with shallow geothermal convection. Background values vary between 7 and 40 ppb

152

Anomaly-free constraints in neutrino seesaw models  

E-Print Network (OSTI)

The implementation of seesaw mechanisms to give mass to neutrinos in the presence of an anomaly-free U(1)_X gauge symmetry is discussed in the context of minimal extensions of the standard model. It is shown that type-I and type-III seesaw mechanisms cannot be simultaneously implemented with an anomaly-free local U(1)_X, unless the symmetry is a replica of the well-known hypercharge. For combined type-I/II or type-III/II seesaw models it is always possible to find nontrivial anomaly-free charge assignments, which are however tightly constrained, if the new neutral gauge boson is kinematically accessible at LHC. The discovery of the latter and the measurement of its decays into third-generation quarks, as well as its mixing with the standard Z boson, would allow one to discriminate among different seesaw realizations.

D. Emmanuel-Costa; Edison T. Franco; R. Gonzalez Felipe

2009-02-10T23:59:59.000Z

153

Anomaly-free constraints in neutrino seesaw models  

SciTech Connect

The implementation of seesaw mechanisms to give mass to neutrinos in the presence of an anomaly-free U(1){sub X} gauge symmetry is discussed in the context of minimal extensions of the standard model. It is shown that type-I and type-III seesaw mechanisms cannot be simultaneously implemented with an anomaly-free local U(1){sub X}, unless the symmetry is a replica of the well-known hypercharge. For combined type-I/II or type-III/II seesaw models it is always possible to find nontrivial anomaly-free charge assignments, which are however tightly constrained, if the new neutral gauge boson is kinematically accessible at LHC. The discovery of the latter and the measurement of its decays into third-generation quarks, as well as its mixing with the standard Z boson, would allow one to discriminate among different seesaw realizations.

Emmanuel-Costa, D. [Departamento de Fisica and Centro de Fisica Teorica de Particulas (CFTP), Instituto Superior Tecnico, Avenida Rovisco Pais, 1049-001 Lisboa (Portugal); Franco, Edison T. [Instituto de Fisica Teorica, Universidade Estadual Paulista, Rua Doutor Bento Teobaldo Ferraz 271 - Bloco II, 01140-070 - Sao Paulo, SP (Brazil); Departamento de Fisica and Centro de Fisica Teorica de Particulas (CFTP), Instituto Superior Tecnico, Avenida Rovisco Pais, 1049-001 Lisboa (Portugal); Felipe, R. Gonzalez [Area Cientifica de Fisica, Instituto Superior de Engenharia de Lisboa, Rua Conselheiro Emidio Navarro 1, 1959-007 Lisboa (Portugal); Departamento de Fisica and Centro de Fisica Teorica de Particulas (CFTP), Instituto Superior Tecnico, Avenida Rovisco Pais, 1049-001 Lisboa (Portugal)

2009-06-01T23:59:59.000Z

154

Mapping the spatial and temporal SST variations in the Red Sea, revealing a probable regional geothermal anomaly using Pathfinder V5 data  

Science Conference Proceedings (OSTI)

The idea is presented that satellite-derived night-time thermal maps can be used for the identification of regional sea surface temperature (SST) anomalies that may be related to geothermal processes. The analysis of night-time monthly Pathfinder V5 ...

George Ch. Miliaresis; Karen St. Seymour

2011-04-01T23:59:59.000Z

155

Variability of the Southern Hemisphere Winter Split Flow—A Case of Two-Way Reinforcement between Mean Flow and Eddy Anomalies  

Science Conference Proceedings (OSTI)

A new split-jet index is defined in this study, and composites based on this index show that the split-flow regime is characterized by a cold–warm–cold tripolar temperature anomaly in the South Pacific that extends equatorward from the Southern ...

Xiaosong Yang; Edmund K. M. Chang

2006-02-01T23:59:59.000Z

156

Phase diagram and water-like anomalies in core-softened shoulder-dumbbells system  

E-Print Network (OSTI)

Using molecular dynamics we studied the role of the anisotropy on the phase boundary and on the anomalous behavior of 250 dimeric particles interacting by a core-softened potential. This study led us to an unexpected result: the introduction of a rather small anisotropy, quantified by the distance between the particles inside each dimer, leads to the increase of the size of the regions in the pressure-temperature phase diagram of anomalies when compared to the isotropic monomeric case. However, as the anisotropy increases beyond a threshold the anomalous regions shrinks. We found that this behavior can be understood by decoupling the translational and non-translational kinetic energy components into different translational and non-translational temperatures.

Cristina Gavazzoni; Guilherme K. Gonzatti; Luiz Felipe Pereira; Luis Henrique Coelho Ramos; Paulo A. Netz; Marcia C. Barbosa

2013-09-03T23:59:59.000Z

157

A Comparison Of Pointwise Screening and Empirical Orthogonal Functions in Specifying Monthly Surface Temperature from 700 mb Data  

Science Conference Proceedings (OSTI)

A comparison is made between two types of specification of monthly wintertime surface temperatures over the United States. The specifications are obtained by multiple regression of station temperature anomaly at each of 37 stations onto 700 mb ...

William H. Klein; John E. Walsh

1983-04-01T23:59:59.000Z

158

Hemispheric and Large-Scale Surface Air Temperature Variations: An Extensive Revision and an Update to 2001  

Science Conference Proceedings (OSTI)

This study is an extensive revision of the Climatic Research Unit (CRU) land station temperature database that is used to produce a gridbox dataset of 5° latitude × 5° longitude temperature anomalies. The new database comprises 5159 station ...

P. D. Jones; A. Moberg

2003-01-01T23:59:59.000Z

159

The Response Time of the Temperature of the Equatorial Troposphere to ENSO Heating  

Science Conference Proceedings (OSTI)

Air temperature anomalies, averaged over the troposphere to 200 mb and around the earth from 10°S to 10°N, lag the similarly averaged El Niño–Southern Oscillation (ENSO) atmospheric latent heating anomalies by about one month. Most of the latent ...

Allan J. Clarke; Kwang-Y. Kim

2005-12-01T23:59:59.000Z

160

Proceedings of the Axial Offset Anomaly (AOA) Science Workshop  

Science Conference Proceedings (OSTI)

This report presents proceedings of the Axial Offset Anomaly (AOA) Science Workshop, held February 10-11 in Palo Alto, California. Twenty-two papers were presented on various aspects of AOA by utilities, EPRI Robust Fuel Program contractors, staff from EPRI and universities, international researchers, and equipment vendors.

2000-06-27T23:59:59.000Z

Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

A Pattern-Based Framework for Software Anomaly Detection  

Science Conference Proceedings (OSTI)

This paper presents a pattern-based framework for developing tool support to detect software anomalies. The use of a pattern-based approach is important because it provides the flexibility needed to address domain-specific needs, with respect to the ... Keywords: high assurance software, pattern specification language, safety-critical avionics systems, software inspection, software tools framework

S. C. Kothari; Luke Bishop; Jeremias Sauceda; Gary Daugherty

2004-06-01T23:59:59.000Z

162

BGP-lens: patterns and anomalies in internet routing updates  

Science Conference Proceedings (OSTI)

The Border Gateway Protocol (BGP) is one of the fundamental computer communication protocols. Monitoring and mining BGP update messages can directly reveal the health and stability of Internet routing. Here we make two contributions: firstly we ... Keywords: BGP monitoring, anomalies, patterns, self-similarity

B. Aditya Prakash; Nicholas Valler; David Andersen; Michalis Faloutsos; Christos Faloutsos

2009-06-01T23:59:59.000Z

163

Network anomaly detection with the restricted Boltzmann machine  

Science Conference Proceedings (OSTI)

With the rapid growth and the increasing complexity of network infrastructures and the evolution of attacks, identifying and preventing network abuses is getting more and more strategic to ensure an adequate degree of protection from both external and ... Keywords: Anomaly detection, Energy-based models, Intrusion detection, Restricted Boltzmann machine, Semi-supervised learning

Ugo Fiore, Francesco Palmieri, Aniello Castiglione, Alfredo De Santis

2013-12-01T23:59:59.000Z

164

Spatial neighborhood based anomaly detection in sensor datasets  

Science Conference Proceedings (OSTI)

Success of anomaly detection, similar to other spatial data mining techniques, relies on neighborhood definition. In this paper, we argue that the anomalous behavior of spatial objects in a neighborhood can be truly captured when both (a) spatial ... Keywords: Outlier detection, Sensors, Spatial neighborhood

Vandana P. Janeja; Nabil R. Adam; Vijayalakshmi Atluri; Jaideep Vaidya

2010-03-01T23:59:59.000Z

165

Modular Anomaly Detection for Smartphone Ad hoc Communication  

E-Print Network (OSTI)

a mobile ad hoc network (MANET). While intrusion detection in MANETs is typically evaluated with network. The study shows the feasibility of the statistics-based anomaly detection regime, having low CPU usage, among others, has been focused on studies of energy and bandwidth constrained communication using

166

An ERP study of semantic anomalies in second language processing  

Science Conference Proceedings (OSTI)

This study conducts an event-related potential (ERP) study to investigate the temporal neural dynamics of semantic processing in bilinguals. The experiment was done with Korean speakers of English as an L2, divided into two groups depending on their ... Keywords: N400, second language, semantic anomaly, semantic congruency, sentence processing

Jia Miao

2013-06-01T23:59:59.000Z

167

Residual bouguer gravity anomaly map of northern New Mexico  

DOE Green Energy (OSTI)

The map is computer contoured from equidistant grid and bicubic spline interpolated surface. Bouguer gravity anomaly correction applied is g/sub BC/ = (0.034) x (elevation - regional elevation), with density 2.67 g/cc. Overall dimensions are 41/sup 1///sub 2/'' x 43''; scale is 1 : 500,000. (JGB)

Aiken, C.L.V.; Laughlin, A.W.; West, F.G.

1977-03-01T23:59:59.000Z

168

Reducing false positives in anomaly detectors through fuzzy alert aggregation  

Science Conference Proceedings (OSTI)

In this paper we focus on the aggregation of IDS alerts, an important component of the alert fusion process. We exploit fuzzy measures and fuzzy sets to design simple and robust alert aggregation algorithms. Exploiting fuzzy sets, we are able to robustly ... Keywords: Aggregation, Anomaly detection, Fuzzy measures, Fuzzy sets, Intrusion detection, Multisensor fusion

Federico Maggi; Matteo Matteucci; Stefano Zanero

2009-10-01T23:59:59.000Z

169

Light Sterile Neutrinos and Short Baseline Neutrino Oscillation Anomalies  

E-Print Network (OSTI)

We study two possible explanations for short baseline neutrino oscillation anomalies, such as the LSND and MiniBooNE anti-neutrino data, and for the reactor anomaly. The first scenario is the mini-seesaw mechanism with two eV-scale sterile neutrinos. We present both analytic formulas and numerical results showing that this scenario could account for the short baseline and reactor anomalies and is consistent with the observed masses and mixings of the three active neutrinos. We also show that this scenario could arise naturally from an effective theory containing a TeV-scale VEV, which could be related to other TeV-scale physics. The minimal version of the mini-seesaw relates the active-sterile mixings to five real parameters and favors an inverted hierarchy. It has the interesting property that the effective Majorana mass for neutrinoless double beta decay vanishes, while the effective masses relevant to tritium beta decay and to cosmology are respectively around 0.2 and 2.4 eV. The second scenario contains only one eV-scale sterile neutrino but with an effective non-unitary mixing matrix between the light sterile and active neutrinos. We find that though this may explain the anomalies, if the non-unitarity originates from a heavy sterile neutrino with a large (fine-tuned) mixing angle, this scenario is highly constrained by cosmological and laboratory observations.

JiJi Fan; Paul Langacker

2012-01-31T23:59:59.000Z

170

Ensemble based sensing anomaly detection in wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks are often used to monitor and measure physical characteristics from remote and sometimes hostile environments. In these circumstances the sensing data accuracy is a crucial attribute for the way these applications complete their ... Keywords: Binary classifier, Data accuracy, Ensemble based systems, Sensors anomalies, Wireless sensor networks

Daniel-Ioan Curiac; Constantin Volosencu

2012-08-01T23:59:59.000Z

171

Embedded Cyber-Physical Anomaly Detection in Smart Meters  

E-Print Network (OSTI)

Embedded Cyber-Physical Anomaly Detection in Smart Meters Massimiliano Raciti, Simin Nadjm vulnerabilities that arise from deployment of local cyber-physical attacks at a smart metering location at destabilisation. In this paper we study a smart metering device that uses a trusted platform for storage

172

Proceedings of the Axial Offset Anomaly (AOA) Science Workshop  

SciTech Connect

This report presents proceedings of the Axial Offset Anomaly (AOA) Science Workshop, held February 10-11 in Palo Alto, California. Twenty-two papers were presented on various aspects of AOA by utilities, EPRI Robust Fuel Program contractors, staff from EPRI and universities, international researchers, and equipment vendors.

None

2003-06-01T23:59:59.000Z

173

Combining filtering and statistical methods for anomaly detection  

Science Conference Proceedings (OSTI)

In this work we develop an approach for anomaly detection for large scale networks such as that of an enterprize or an ISP. The traffic patterns we focus on for analysis are that of a network-wide view of the traffic state, called the traffic matrix. ...

Augustin Soule; Kavé Salamatian; Nina Taft

2005-10-01T23:59:59.000Z

174

A RE-INTRODUCTION TO ANOMALIES OF CRITICALITY  

SciTech Connect

In 1974, a small innocuous document was submitted to the American Nuclear Society's Criticality Safety Division for publication that would have lasting impacts on this nuclear field The author was Duane Clayton, manager of the Battelle Pacific Northwest National Laboratory's Critical Mass Lab, the world's preeminent reactor critical experimenter with plutonium solutions. The document was entitled, 'Anomalies of Criticality'. 'Anomalies...' was a compilation of more than thirty separate and distinct examples of departures from what might be commonly expected in the field of nuclear criticality. Mr. Clayton's publication was the derivative of more than ten thousand experiments and countless analytical studies conducted world-wide on every conceivable reactor system imaginable: from fissile bearing solutions to solids, blocks to arrays of fuel rods, low-enriched uranium oxide systems to pure plutonium and highly enriched uranium systems. After publication, the document was commonly used within the nuclear fuel cycle and reactor community to train potential criticality/reactor analysts, experimenters and fuel handlers on important things for consideration when designing systems with critically 'safe' parameters in mind The purpose of this paper is to re-introduce 'Anomalies of Criticality' to the current Criticality Safety community and to add new 'anomalies' to the existing compendium. By so doing, it is the authors' hope that a new generation of nuclear workers and criticality engineers will benefit from its content and might continue to build upon this work in support of the nuclear renaissance that is about to occur.

PUIGH RJ

2009-09-09T23:59:59.000Z

175

Persistent Anomalies of the Extratropical Northern Hemisphere Wintertime Circulation: Geographical Distribution and Regional Persistence Characteristics  

Science Conference Proceedings (OSTI)

We have studied the geographical and regional persistence characteristics of wintertime Northern Hemisphere 500 mb height anomalies, focusing particular attention on the behavior of strong anomalies that persist beyond the durations associated ...

Randall M. Dole; Neil D. Gordon

1983-08-01T23:59:59.000Z

176

West African Monsoon Dynamics and Eastern Equatorial Atlantic and Pacific SST Anomalies (1970–88)  

Science Conference Proceedings (OSTI)

The Laboratoire de Météorologie Dynamique atmospheric GCM is used to investigate relationships between West African monsoon dynamics and SST anomalies in the eastern equatorial Atlantic and Pacific for the period 1970–88. Positive SST anomalies ...

Serge Janicot; Ali Harzallah; Bernard Fontaine; Vincent Moron

1998-08-01T23:59:59.000Z

177

The Winter Atmospheric Response to Sea Ice Anomalies in the Barents Sea  

Science Conference Proceedings (OSTI)

The atmospheric response to sea ice anomalies over the Barents Sea during winter was determined by boundary forcing the Community Atmosphere Model (CAM) with daily varying high and low sea ice concentration (SIC) anomalies that decreased ...

Jessica Liptak; Courtenay Strong

2014-01-01T23:59:59.000Z

178

Diagenetic and Detrial Origin of Moretane Anomalies through the Permian-Triassic Boundary  

E-Print Network (OSTI)

Many biogeochemical anomalies coincide with the Late Permian Extinction (LPE; 252.28 Ma). Several mechanisms have been proposed to explain the moretane/hopane anomaly that has been identified in samples from Meishan GSSP ...

French, Katherine L.

179

Potential Vorticity Diagnosis of the Severe Convective Regime. Part II: The Impact of Idealized PV Anomalies  

Science Conference Proceedings (OSTI)

Idealized numerical experiments are conducted to understand the effect of upper-tropospheric potential vorticity (PV) anomalies on an environment conducive to severe weather. Anomalies are specified as a single isolated vortex, a string of ...

John W. Nielsen-Gammon; David A. Gold

2008-05-01T23:59:59.000Z

180

How Total Precipitable Water Vapor Anomalies Relate to Cloud Vertical Structure  

Science Conference Proceedings (OSTI)

The NOAA operational total precipitable water (TPW) anomaly product is available to forecasters to display percentage of normal TPW in real time for applications like heavy precipitation forecasts. In this work, the TPW anomaly is compared to ...

John M. Forsythe; Jason B. Dodson; Philip T. Partain; Stanley Q. Kidder; Thomas H. Vonder Haar

2012-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Correlation between thermodynamic anomalies and pathways of ice nucleation in supercooled water  

E-Print Network (OSTI)

The well-known classical nucleation theory (CNT) for the free energy barrier towards formation of a nucleus of critical size of the new stable phase within the parent metastable phase fails to take into account the influence of other metastable phases having density/order intermediate between the parent metastable phase and the final stable phase. This lacuna can be more serious than capillary approximation or spherical shape assumption made in CNT. This issue is particularly significant in ice nucleation because liquid water shows rich phase diagram consisting of two (high and low density) liquid phases in supercooled state. The explanations of thermodynamic and dynamic anomalies of supercooled water often invoke the possible influence of a liquid-liquid transition between two metastable liquid phases. To investigate both the role of thermodynamic anomalies and presence of distinct metastable liquid phases in supercooled water on ice nucleation, we employ density functional theoretical approach to find nucleation free energy barrier in different regions of phase diagram. The theory makes a number of striking predictions, such as a dramatic lowering of nucleation barrier due to presence of a metastable intermediate phase and crossover in the dependence of free energy barrier on temperature near liquid-liquid critical point. These predictions can be tested by computer simulations as well as by controlled experiments.

Rakesh S. Singh; Biman Bagchi

2013-12-07T23:59:59.000Z

182

Interpretation of Self-Potential Anomalies Using Constitutive Relationships for Electrochemical and Thermoelectric Coupling Coefficients  

DOE Green Energy (OSTI)

Constitutive relationships for electrochemical and thermoelectric cross-coupling coefficients are derived using ionic mobilities, applying a general derivative of chemical potential and employing the zero net current condition. The general derivative of chemical potential permits thermal variations which give rise to the thermoelectric effect. It also accounts for nonideal solution behavior. An equation describing electric field strength is similarly derived with the additional assumption of electrical neutrality in the fluid Planck approximation. The Planck approximation implies that self-potential (SP) is caused only by local sources and also that the electric field strength has only first order spatial variations. The derived relationships are applied to the NaCl-KCl concentration cell with predicted and measured voltages agreeing within 0.4 mV. The relationships are also applied to the Long Valley and Yellowstone geothermal systems. There is a high degree of correlation between predicted and measured SP response for both systems, giving supporting evidence for the validity of the approach. Predicted SP amplitude exceeds measured in both cases; this is a possible consequence of the Planck approximation. Electrochemical sources account for more than 90% of the predicted response in both cases while thermoelectric mechanisms account for the remaining 10%; electrokinetic effects are not considered. Predicted electrochemical and thermoelectric voltage coupling coefficients are comparable to values measured in the laboratory. The derived relationships are also applied to arbitrary distributions of temperature and fluid composition to investigate the geometric diversity of observed SP anomalies. Amplitudes predicted for hypothetical saline spring and hot spring environments are less than 40 mV. In contrast, hypothetical near surface steam zones generate very large amplitudes, over 2 V in one case. These results should be viewed with some caution due to the uncertain validity of the Planck approximation for these conditions. All amplitudes are controlled by electrochemical mechanisms. Polarities are controlled by the curvature of the concentration or thermal profile. Concave upward thermal profiles produce positive anomalies, for constant fluid concentrations, whereas concave upward concentration profiles produce negative anomalies. Concave downward concentration profiles are characterized by small negative closures bounding a larger, positive SP anomaly.

Knapp, R. B.; Kasameyer, P. W.

1988-01-01T23:59:59.000Z

183

Phonon anomalies induced by polar nano-regions in a relaxor ...  

Science Conference Proceedings (OSTI)

... Phonon anomalies induced by polar nano-regions in a relaxor Ferroelectric. Guangyong Xu (BNL, New York). Inelastic neutron ...

184

Rapid reconnaissance of geothermal prospects using shallow temperature  

Open Energy Info (EERE)

Second technical report Second technical report Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Rapid reconnaissance of geothermal prospects using shallow temperature surveys. Second technical report Details Activities (1) Areas (1) Regions (0) Abstract: The previously examined geothermal sites at Long Valley and Coso were studied in much greater detail. Techniques for correcting the 2-m temperature data were evaluated. Using a preliminary model and analysis of the Coso data, the importance of measuring soil thermal diffusivity data at each temperature probe site was shown. Corrected 2-m temperature anomaly at Coso was compared with a low altitude aeromagnetic anomaly and an anomaly outlined by electrical resistivity methods obtained independently. Preliminary tests were made with a simple thermal conductivity probe

185

Geomagnetic Precursor Z Component Diurnal Variation Phase Anomaly Recognition based on the Pattern Distance  

Science Conference Proceedings (OSTI)

Geomagnetic precursor is one of many earthquake precursors, which have better effects on earthquake prediction, while the diurnal variation anomaly of geomagnetic precursor Z component is an important one in short-impending anomalies. Basing on the pattern ... Keywords: Geomagnetic Precursor, Diurnal Variation, Pattern Distance, Anomaly Recognition

Shaochun Wu; Tongyu Yuan; Yan Tang; Bofeng Zhang; Daming Wei

2010-06-01T23:59:59.000Z

186

Using Echo State Networks for Anomaly Detection in Underground Coal Mines  

Science Conference Proceedings (OSTI)

We investigate the problem of identifying anomalies in monitoring critical gas concentrations using a sensor network in an underground coal mine. In this domain, one of the main problems is a provision of mine specific anomaly detection, with cyclical ... Keywords: sensor networks, anomaly detection, recurrent neural networks, echo state networks, bayesian networks, coal mines

Oliver Obst; X. Rosalind Wang; Mikhail Prokopenko

2008-04-01T23:59:59.000Z

187

Consistent description of kinetic equation with triangle anomaly  

SciTech Connect

We provide a consistent description of the kinetic equation with a triangle anomaly which is compatible with the entropy principle of the second law of thermodynamics and the charge/energy-momentum conservation equations. In general an anomalous source term is necessary to ensure that the equations for the charge and energy-momentum conservation are satisfied and that the correction terms of distribution functions are compatible to these equations. The constraining equations from the entropy principle are derived for the anomaly-induced leading order corrections to the particle distribution functions. The correction terms can be determined for the minimum number of unknown coefficients in one charge and two charge cases by solving the constraining equations.

Pu Shi; Gao Jianhua; Wang Qun [Interdisciplinary Center for Theoretical Study and Department of Modern Physics, University of Science and Technology of China, Hefei 230026 (China)

2011-05-01T23:59:59.000Z

188

Anomaly induced transport coefficients, from weak to strong coupling  

E-Print Network (OSTI)

The existence of new transport phenomena associated to the presence of quantum anomalies has atracted very recently the attention of theorist. These transport coefficient have very interesting properties, for example, they do not renormalize. The most famous case of anomaly induced transport phenomena is the Chiral Magnetic Effect, in which an electric current is produced by a magnetic field if the system has a different number of right handed fermions respect the left handed one. In this thesis we have studied those transport coefficients from Kubo formulas at weak and strong coupling. To finish a fluid/gravity approach is used to compute all the second order anomalous coefficients in an anomalous conformal fluid.

Francisco Pena-Benitez

2013-07-01T23:59:59.000Z

189

Decadal Covariability of the Northern Wintertime Land Surface Temperature and Atmospheric Circulation  

Science Conference Proceedings (OSTI)

The decadal covariability of northern wintertime land surface temperature and 500-hPa geopotential anomalies is examined using the National Centers for Environmental Prediction–National Center for Atmospheric Research and the Twentieth-Century ...

B. Yu; X. L. Wang; X. B. Zhang; J. Cole; Y. Feng

2014-01-01T23:59:59.000Z

190

On the Stochastic Forcing of Modes of Interannual Southern Ocean Sea Surface Temperature Variability  

Science Conference Proceedings (OSTI)

A simple linearized transport model of anomalous Southern Ocean sea surface temperature (SST) is studied to determine whether it can sustain anomalies of realistic amplitudes under a physically based stochastic forcing. As noted in previous ...

Christopher M. Aiken; Matthew H. England

2005-08-01T23:59:59.000Z

191

Winter Persistence Barrier of Sea Surface Temperature in the Northern Tropical Atlantic Associated with ENSO  

Science Conference Proceedings (OSTI)

This study investigates the persistence characteristics of the sea surface temperature anomaly (SSTA) in the northern tropical Atlantic (NTA). It is found that a persistence barrier exists around December and January. This winter persistence ...

Ruiqiang Ding; Jianping Li

2011-05-01T23:59:59.000Z

192

Attributes of Several Methods for Detecting Discontinuities in Mean Temperature Series  

Science Conference Proceedings (OSTI)

Simulated annual temperature series are used to compare seven homogenization procedures. The two that employ likelihood ratio tests routinely outperform other methods in their ability to identify modest (0.33°C; 0.6 standard deviation anomaly) ...

Arthur T. DeGaetano

2006-03-01T23:59:59.000Z

193

Improvements to NOAA’s Historical Merged Land–Ocean Surface Temperature Analysis (1880–2006)  

Science Conference Proceedings (OSTI)

Observations of sea surface and land–near-surface merged temperature anomalies are used to monitor climate variations and to evaluate climate simulations; therefore, it is important to make analyses of these data as accurate as possible. Analysis ...

Thomas M. Smith; Richard W. Reynolds; Thomas C. Peterson; Jay Lawrimore

2008-05-01T23:59:59.000Z

194

The Role of Sea Surface Temperatures in Interactions between ENSO and the North Pacific Oscillation  

Science Conference Proceedings (OSTI)

The North Pacific Oscillation (NPO) is a decadal to interdecadal fluctuation of sea surface temperatures (SSTs) in the North Pacific. Previous works have shown that during individual El Niño and La Niña winters, atmospheric circulation anomalies ...

David W. Pierce

2002-06-01T23:59:59.000Z

195

Tree-Ring Density Reconstructions of Summer Temperature Patterns across Western North America since 1600  

Science Conference Proceedings (OSTI)

Summer half-year (April-September) mean temperatures are reconstructed across western North America between 1600 and 1982. The reconstructions, ultimately in the form of gridpoint anomaly time series, are produced using a principal-components ...

K. R. Briffa; P. D. Jones; F. H. Schweingruber

1992-07-01T23:59:59.000Z

196

Dominant Modes of Wintertime Upper-Tropospheric Temperature Variations over Asia and Links to Surface Climate  

Science Conference Proceedings (OSTI)

In this study, the authors investigate the variations and predictability of wintertime upper-tropospheric temperature (UTT) over Asia, which are often linked to severe climate anomalies, and the associated features of large-scale circulation and ...

Xingwen Jiang; Song Yang; Yueqing Li; Zongjian Ke; Jianping Li; Haoran Hu

2013-11-01T23:59:59.000Z

197

Hemispheric Surface Air Temperature Variations: A Reanalysis and an Update to 1993  

Science Conference Proceedings (OSTI)

Land-based compilations of gridded monthly surface air temperature anomalies, averaged into hemispheric values for the last 140 years, have been available for climatological analyses for the last 10 years or so. The analysis techniques used in ...

P. D. Jones

1994-11-01T23:59:59.000Z

198

An Evaluation of Monthly Mean MSU and ECMWF Global Atmospheric Temperatures for Monitoring Climate  

Science Conference Proceedings (OSTI)

Monthly mean brightness temperature anomalies derived from channel 2 of the microwave sounding units (M5Us) on board NOAA satellites over the past decade are examined and compared with both weighted and pressure-level ECMWF monthly mean ...

James W. Hurrell; Kevin E. Trenberth

1992-12-01T23:59:59.000Z

199

Seasonal and Regional Variation of Pan-Arctic Surface Air Temperature over the Instrumental Record  

Science Conference Proceedings (OSTI)

Instrumental surface air temperature (SAT) records beginning in the late 1800s from 59 Arctic stations north of 64°N show monthly mean anomalies of several degrees and large spatial teleconnectivity, yet there are systematic seasonal and regional ...

James E. Overland; Michael C. Spillane; Donald B. Percival; Muyin Wang; Harold O. Mofjeld

2004-09-01T23:59:59.000Z

200

Anomalies and asymmetries in quark-gluon matter  

SciTech Connect

The manifestations of axial anomaly and related effects in heavy-ion collisions are considered. Special role is played by various asymmetries. The azimuthal correlational asymmetries of neutron pairs at NICA/FAIR energy range may probe the global rotation of strongly interacting matter. The conductivity is related to the angular asymmetries of dilepton pairs. The strong magnetic field generated in heavy-ion collisions leads to the excess of soft dileptons flying predominantly in the scattering plane.

Teryaev, O. V., E-mail: teryaev@theor.jinr.ru [Joint Institute for Nuclear Research (Russian Federation)

2012-06-15T23:59:59.000Z

Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

A RE-INTRODUCTION TO ANOMALIES OF CRITICALITY  

SciTech Connect

In 1974, a small innocuous document was submitted to the American Nuclear Society's Criticality Safety Division for publication that would have lasting impacts on this nuclear field The author was Duane Clayton, manager of the Battelle Pacific Northwest National Laboratory's Critical Mass Lab, the world's preeminent reactor critical experimenter with plutonium solutions. The document was entitled, 'Anomalies of Criticality'. 'Anomalies...' was a compilation of more than thirty separate and distinct examples of departures from what might be commonly expected in the field of nuclear criticality. Mr. Clayton's publication was the derivative of more than ten thousand experiments and countless analytical studies conducted world-wide on every conceivable reactor system imaginable: from fissile bearing solutions to solids, blocks to arrays of fuel rods, low-enriched uranium oxide systems to pure plutonium and highly enriched uranium systems. After publication, the document was commonly used within the nuclear fuel cycle and reactor community to train potential criticality/reactor analysts, experimenters and fuel handlers on important things for consideration when designing systems with critically 'safe' parameters in mind The purpose of this paper is to re-introduce 'Anomalies of Criticality' to the current Criticality Safety community and to add new 'anomalies' to the existing compendium. By so doing, it is the authors' hope that a new generation of nuclear workers and criticality engineers will benefit from its content and might continue to build upon this work in support of the nuclear renaissance that is about to occur.

PUIGH RJ

2009-09-09T23:59:59.000Z

202

The Pioneer Anomaly: Seeking an explanation in newly recovered data  

E-Print Network (OSTI)

The Pioneer 10 and 11 spacecraft yielded very accurate navigation that was limited only by a small, anomalous frequency drift of their carrier signals received by the NASA Deep Space Network (DSN). This discrepancy, evident in the data for both spacecraft, was interpreted as an approximately constant acceleration and has become known as the Pioneer anomaly. The origin of this anomaly is yet unknown. Recent efforts to explain the effect included a search for independent confirmation, analyses of conventional mechanisms, even ideas rooted in new physics, and proposals for a dedicated mission. We assert that before any discussion of new physics and (or) a dedicated mission can take place, one must analyze the entire set of radiometric Doppler data received from Pioneer 10 and 11. We report on our efforts to recover and utilize the complete set of radio Doppler and telemetry records of both spacecraft. The collection of radio Doppler data for both missions is now complete; we are ready to begin its evaluation. We also made progress utilizing the recently recovered Pioneer telemetry data. We present a strategy for studying the effect of on-board generated small forces with this telemetry data, in conjunction with the analysis of the entire set of the Pioneer Doppler data. We report on the preparations for the upcoming analysis of the newly recovered data with the ultimate goal of determining the origin of the Pioneer anomaly. Finally, we discuss implications of our on-going research of the Pioneer anomaly for other missions, most notably for New Horizons, NASA's recently launched mission to Pluto.

Viktor T Toth; Slava G Turyshev

2006-03-07T23:59:59.000Z

203

PWR Axial Offset Anomaly (AOA) Guidelines, Revision 1  

Science Conference Proceedings (OSTI)

Axial offset anomaly (AOA) is defined as a significant negative axial offset deviation from the predicted nuclear design value. AOA results from the incorporation of boron within corrosion product deposits on the upper spans of high-duty pressurized water reactor (PWR) fuel assemblies. The consequences of this process are an erosion of shutdown margin and loss of operational flexibility by control room operators, particularly during power transients.

2004-06-28T23:59:59.000Z

204

Light Sterile Neutrinos and Short Baseline Neutrino Oscillation Anomalies  

E-Print Network (OSTI)

We study two possible explanations for short baseline neutrino oscillation anomalies, such as the LSND and MiniBooNE anti-neutrino data, and for the reactor anomaly. The first scenario is the mini-seesaw mechanism with two eV-scale sterile neutrinos. We present both analytic formulas and numerical results showing that this scenario could account for the short baseline and reactor anomalies and is consistent with the observed masses and mixings of the three active neutrinos. We also show that this scenario could arise naturally from an effective theory containing a TeV-scale VEV, which could be related to other TeV-scale physics. The minimal version of the mini-seesaw relates the active-sterile mixings to five real parameters and favors an inverted hierarchy. It has the interesting property that the effective Majorana mass for neutrinoless double beta decay vanishes, while the effective masses relevant to tritium beta decay and to cosmology are respectively around 0.2 and 2.4 eV. The second scenario contains o...

Fan, JiJi

2012-01-01T23:59:59.000Z

205

Geological isotope anomalies as signatures of nearby supernovae  

E-Print Network (OSTI)

Nearby supernova explosions may cause geological isotope anomalies via the direct deposition of debris or by cosmic-ray spallation in the earth's atmosphere. We estimate the mass of material deposited terrestrially by these two mechanisms, showing the dependence on the supernova distance. A number of radioactive isotopes are identified as possible diagnostic tools, such as Be-10, Al-26, Cl-36, Mn-53, Fe-60, and Ni-59, as well as the longer-lived I-129, Sm-146, and Pu-244. We discuss whether the 35 and 60 kyr-old Be-10 anomalies observed in the Vostok antarctic ice cores could be due to supernova explosions. Combining our estimates for matter deposition with results of recent nucleosynthesis yields, we calculate the expected signal from nearby supernovae using ice cores back to \\sim 300 kyr ago, and we discuss using deep ocean sediments back to several hundred Myr. In particular, we examine the prospects for identifying isotope anomalies due to the Geminga supernova explosion, and signatures of the possibility...

Ellis, Jonathan Richard; Schramm, David N; Ellis, John; Fields, Brian D; Schramm, David N

1996-01-01T23:59:59.000Z

206

The trace anomaly and dynamical vacuum energy in cosmology  

Science Conference Proceedings (OSTI)

The trace anomaly of conformal matter implies the existence of massless scalar poles in physical amplitudes involving the stress-energy tensor. These poles may be described by a local effective action with massless scalar fields, which couple to classical sources, contribute to gravitational scattering processes, and can have long range gravitational effects at macroscopic scales. In an effective field theory approach, the effective action of the anomaly is an infrared relevant term that should be added to the Einstein-Hilbert action of classical General Relativity to take account of macroscopic quantum effects. The additional scalar degrees of freedom contained in this effective action may be understood as responsible for both the Casimir effect in flat spacetime and large quantum backreaction effects at the horizon scale of cosmological spacetimes. These effects of the trace anomaly imply that the cosmological vacuum energy is dynamical, and its value depends on macroscopic boundary conditions at the cosmological horizon scale, rather than sensitivity to the extreme ultraviolet Planck scale.

Mottola, Emil [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

207

Anomaly Detection in Multiple Scale for Insider Threat Analysis  

Science Conference Proceedings (OSTI)

We propose a method to quantify malicious insider activity with statistical and graph-based analysis aided with semantic scoring rules. Different types of personal activities or interactions are monitored to form a set of directed weighted graphs. The semantic scoring rules assign higher scores for the events more significant and suspicious. Then we build personal activity profiles in the form of score tables. Profiles are created in multiple scales where the low level profiles are aggregated toward more stable higherlevel profiles within the subject or object hierarchy. Further, the profiles are created in different time scales such as day, week, or month. During operation, the insider s current activity profile is compared to the historical profiles to produce an anomaly score. For each subject with a high anomaly score, a subgraph of connected subjects is extracted to look for any related score movement. Finally the subjects are ranked by their anomaly scores to help the analysts focus on high-scored subjects. The threat-ranking component supports the interaction between the User Dashboard and the Insider Threat Knowledge Base portal. The portal includes a repository for historical results, i.e., adjudicated cases containing all of the information first presented to the user and including any additional insights to help the analysts. In this paper we show the framework of the proposed system and the operational algorithms.

Kim, Yoohwan [ORNL; Sheldon, Frederick T [ORNL; Hively, Lee M [ORNL

2012-01-01T23:59:59.000Z

208

Anomaly in the conductivity relaxation parameters at the phase transition of ferroelectric materials: A time domain study  

Science Conference Proceedings (OSTI)

The influence of the ferroelectric to paraelectric transition on the relaxation parameters of conductive processes in ferroelectric materials is studied in the time domain. Three well-known ferroelectric systems were chosen with transition temperatures in different regions, these are, high-temperature PbNb{sub 2}O{sub 6}-based ceramics; nanostructured Pb(Zr{sub 0.6}Ti{sub 0.4})O{sub 3} ceramics; and submicron BaTiO{sub 3}. The thermal evolution of relaxation parameters shows clear anomalies in their typical behavior when conductivity processes arise in the temperature range where the ferroelectric transition takes place. The method here described allows obtaining information about the correlation between charge transport and the motion of the off-center ions at the phase transition.

Leyet, Y.; Guerrero, F. [Departamento de Fisica, Facultad de Ciencias Naturales, Universidad de Oriente, CP-90500, Santiago de Cuba (Cuba); Amorin, H. [Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid (Spain); Guerra, J. de Los S. [Instituto de Fisica, Universidade Federal de Uberlandia (UFU), 38400-902 Uberlandia, Minas Gerais Brazil (Brazil); Eiras, J. A. [Departamento de Fisica, Grupo de Ceramicas Ferroeletricas, Universidade Federal de Sao Carlos (UFSCar), CEP 13565-670 Sao Carlos, Sao Paulo (Brazil)

2010-10-18T23:59:59.000Z

209

Linkages between Summer Rainfall Variability over South America and Sea Surface Temperature Anomalies  

Science Conference Proceedings (OSTI)

A reconstructed rainfall dataset, and satellite estimates are used to analyze interannual to decadal variability of austral summer precipitation over South America. Rotated empirical orthogonal function (REOF) analysis is applied to isolate ...

Julia N. Paegle; Kingtse C. Mo

2002-06-01T23:59:59.000Z

210

A Bayesian ANOVA Scheme for Calculating Climate Anomalies, with Applications to the Instrumental Temperature Record  

Science Conference Proceedings (OSTI)

Climate datasets with both spatial and temporal components are often studied after removing from each time series a temporal mean calculated over a common reference interval, which is generally shorter than the overall length of the dataset. The ...

Martin P. Tingley

2012-01-01T23:59:59.000Z

211

Chiral Anomaly and Decay of Color Electric Field  

E-Print Network (OSTI)

Using the formula of chiral anomaly, we discuss the pair production of quarks under color electric field $\\vec{E}$ without addressing explicit formula of quark's wavefunctions. The production is assumed to occur under the effect of color magnetic field $\\vec{B}$ as well as the color electric field. We obtain the life time $t_c$ of the color electric field in the limit of $B\\gg E$. Applying it to the glasma in high-energy heavy-ion collisions, we find that $t_c\\simeq 10Q_s^{-1}$ with saturation momentum $Q_s$.

Aiichi Iwazaki

2009-04-09T23:59:59.000Z

212

Rapid reconnaissance of geothermal prospects using shallow temperature surveys. Second technical report  

DOE Green Energy (OSTI)

The previously examined geothermal sites at Long Valley and Coso were studied in much greater detail. Techniques for correcting the 2-m temperature data were evaluated. Using a preliminary model and analysis of the Coso data, the importance of measuring soil thermal diffusivity data at each temperature probe site was shown. Corrected 2-m temperature anomaly at Coso was compared with a low altitude aeromagnetic anomaly and an anomaly outlined by electrical resistivity methods obtained independently. Preliminary tests were made with a simple thermal conductivity probe demonstrating the feasibility of measuring soil thermal diffusivity at the time the 2-m temperatures are recorded. This opens the way for operational shallow temperature surveys in areas which do not have, as at Coso, a simple set of surface conditions. It is concluded that making useful shallow temperature measurements where there is a modest amount of ground water flow need not be a hopeless task.

LeSchack, L.A.; Lewis, J.E.; Chang, D.C.; Lewellen, R.I.; O'Hara, N.W.

1979-03-01T23:59:59.000Z

213

A Large Self-Potential Anomaly And Its Changes On The Quiet Mt Fuji, Japan  

Open Energy Info (EERE)

Self-Potential Anomaly And Its Changes On The Quiet Mt Fuji, Japan Self-Potential Anomaly And Its Changes On The Quiet Mt Fuji, Japan Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Large Self-Potential Anomaly And Its Changes On The Quiet Mt Fuji, Japan Details Activities (0) Areas (0) Regions (0) Abstract: Self-potential (SP) surveys were carried out on Mt. Fuji volcano, Japan, and an intense positive anomaly (about 2000 mV) was found in the summit area. The positive SP anomaly was stable on 2001 and 2002, but increased 150 mV in amplitude on September 12, 2003, and suddenly decreased 300 mV two weeks later. This amplitude change coincides with the emergence of the fumaroles, which appeared for the first time in 40 years, on the east-northeast flank 6 km apart from the summit. The SP anomaly is thought

214

The Pioneer Anomaly: Seeking an explanation in newly recovered data  

E-Print Network (OSTI)

The Pioneer 10/11 spacecraft yielded a very accurate navigation that was limited only by a small, anomalous frequency drift of their carrier signals received by the NASA Deep Space Network (DSN). This discrepancy, evident in the data for both spacecraft, was interpreted as an approximately constant acceleration and has become known as the Pioneer anomaly. The origin of this anomaly is as of yet unknown. Recent efforts to explain the effect included a search for independent confirmation, analyses of conventional mechanisms, even ideas rooted in new physics and proposals for a dedicated mission. We assert that before any discussion of new physics and/or a dedicated mission can take place, one must analyze the entire set of radiometric Doppler data received from Pioneers 10 and 11. We report on our efforts to recover and utilize the complete set of radio Doppler and telemetry records of both spacecraft. The collection of radio Doppler data for both missions is now complete; we are ready to begin its evaluation. ...

Toth, V T; Toth, Viktor T; Turyshev, Slava G

2006-01-01T23:59:59.000Z

215

Apparatus for detecting a magnetic anomaly contiguous to remote location by squid gradiometer and magnetometer systems  

DOE Patents (OSTI)

A superconducting quantum interference device (SQUID) magnetic detection apparatus detects magnetic fields, signals, and anomalies at remote locations. Two remotely rotatable SQUID gradiometers may be housed in a cryogenic environment to search for and locate unambiguously magnetic anomalies. The SQUID magnetic detection apparatus can be used to determine the azimuth of a hydrofracture by first flooding the hydrofracture with a ferrofluid to create an artificial magnetic anomaly therein.

Overton, Jr., William C. (Los Alamos, NM); Steyert, Jr., William A. (Los Alamos, NM)

1984-01-01T23:59:59.000Z

216

Multivariate forecast of winter monsoon rainfall in India using SST anomaly as a predictor: Neurocomputing and statistical approaches  

E-Print Network (OSTI)

In this paper, the complexities in the relationship between rainfall and sea surface temperature (SST) anomalies during the winter monsoon (November-January) over India were evaluated statistically using scatter plot matrices and autocorrelation functions.Linear as well as polynomial trend equations were obtained and it was observed that the coefficient of determination for the linear trend was very low and it remained low even when polynomial trend of degree six was used. An exponential regression equation and an artificial neural network with extensive variable selection were generated to forecast the average winter monsoon rainfall of a given year using the rainfall amounts and the sea surface temperature anomalies in the winter monsoon months of the previous year as predictors. The regression coefficients for the multiple exponential regression equation were generated using Levenberg-Marquardt algorithm. The artificial neural network was generated in the form of a multiplayer perceptron with sigmoid non-linearity and genetic-algorithm based variable selection. Both of the predictive models were judged statistically using the Willmott index, percentage error of prediction, and prediction yields. The statistical assessment revealed the potential of artificial neural network over exponential regression.

Goutami Chattopadhyay; Surajit Chattopadhyay; Rajni Jain

2009-10-28T23:59:59.000Z

217

Why did large differences arise in the sea surface temperature datasets across the tropical Pacific during 2012?  

Science Conference Proceedings (OSTI)

During June-November 2012, pronounced differences in tropical Pacific sea-surface temperature (SST) anomalies were observed between three widely used SST products: the Extended Reconstructed SST v3b (ERSSTv3b) and the Optimum Interpolation SSTv2 ...

Boyin Huang; Michelle L’Heureux; Jay Lawrimore; Chunying Liu; Huai-Min Zhang; Viva Banzon; Zeng-Zhen Hu; Arun Kumar

218

Principal Modes of Atmospheric Variability in Model Atmospheres with and without Anomalous Sea Surface Temperature Forcing in the Tropical Pacific  

Science Conference Proceedings (OSTI)

Principal modes of low-frequency atmospheric variability and the influence of sea surface temperature anomalies on such modes are investigated by examining the output from two general circulation model experiments. In the first experiment (the “...

In-Sik Kang; Ngar-Cheung Lau

1986-11-01T23:59:59.000Z

219

The Relationship of Soil Moisture Parameterizations to Subsequent Seasonal and Monthly Mean Temperature in the United States  

Science Conference Proceedings (OSTI)

The water content parameter and the moisture anomaly index, both derived from the Palmer Drought Severity model, were correlated against subsequent mean monthly and seasonal (three-month means) temperatures for 344 climatic divisions in the ...

Thomas R. Karl

1986-04-01T23:59:59.000Z

220

Leading Modes of the Upper-Ocean Temperature Interannual Variability along the Equatorial Atlantic Ocean in NCEP GODAS  

Science Conference Proceedings (OSTI)

In this work, the authors analyze the physical mechanisms of interannual variability of the upper-ocean temperature anomaly (OTA) in the equatorial Atlantic Ocean, using ocean reanalysis from the National Centers for Environmental Prediction (NCEP)...

Zeng-Zhen Hu; Arun Kumar; Bohua Huang; Jieshun Zhu

2013-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

A Predominant Reversal in the Relationship between the SAM and East Antarctic Temperatures during the Twenty-First Century  

Science Conference Proceedings (OSTI)

The scientific literature portrays a temporally invariant spatial relationship between the phase of the southern annular mode (SAM) and the sign of surface air temperature (SAT) anomalies across Antarctica. However, here the authors describe a ...

Gareth J. Marshall; Andrew Orr; John Turner

2013-07-01T23:59:59.000Z

222

Development of 2-Meter Soil Temperature Probes and Results of Temperature  

Open Energy Info (EERE)

Development of 2-Meter Soil Temperature Probes and Results of Temperature Development of 2-Meter Soil Temperature Probes and Results of Temperature Survey Conducted at Desert Peak, Nevada, USA Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Development of 2-Meter Soil Temperature Probes and Results of Temperature Survey Conducted at Desert Peak, Nevada, USA Abstract Temperature gradient drilling has historically been a key tool in the exploration for geothermal resources in the Great Basin, USA but regulatory, environmental, and accessibility issues, as well as the expense of drilling, are increasingly limiting its use. In cases where thermal groundwater is not overlain by near-surface cold aquifers, temperatures measured at a depth of 2-meters is an efficient method for mapping thermal anomalies at a high level of detail. This is useful for augmenting deeper

223

Log Summarization and Anomaly Detection for TroubleshootingDistributed Systems  

SciTech Connect

Today's system monitoring tools are capable of detectingsystem failures such as host failures, OS errors, and network partitionsin near-real time. Unfortunately, the same cannot yet be said of theend-to-end distributed softwarestack. Any given action, for example,reliably transferring a directory of files, can involve a wide range ofcomplex and interrelated actions across multiple pieces of software:checking user certificates and permissions, getting details for allfiles, performing third-party transfers, understanding re-try policydecisions, etc. We present an infrastructure for troubleshooting complexmiddleware, a general purpose technique for configurable logsummarization, and an anomaly detection technique that works in near-realtime on running Grid middleware. We present results gathered using thisinfrastructure from instrumented Grid middleware and applications runningon the Emulab testbed. From these results, we analyze the effectivenessof several algorithms at accurately detecting a variety of performanceanomalies.

Gunter, Dan; Tierney, Brian L.; Brown, Aaron; Swany, Martin; Bresnahan, John; Schopf, Jennifer M.

2007-08-01T23:59:59.000Z

224

Increasing coverage to improve detection of network and host anomalies  

E-Print Network (OSTI)

For intrusion detection, the LERAD algorithm learns a succinct set of comprehensible rules for detecting anomalies, which could be novel attacks. LERAD validates the learned rules on a separate held-out validation set and removes rules that cause false alarms. However, removing rules with possible high coverage can lead to missed detections. We propose three techniques for increasing coverage- Weighting, Replacement and Hybrid. Weighting retains previously pruned rules and associate weights to them. Replacement, on the other hand, substitutes pruned rules with other candidate rules to ensure high coverage. We also present a Hybrid approach that selects between the two techniques based on training data coverage. Empirical results from seven data sets indicate that, for LERAD, increasing coverage by Weighting, Replacement and Hybrid detects more attacks than Pruning with minimal computational overhead.

Gaurav Tandon; Philip K. Chan

2007-01-01T23:59:59.000Z

225

New Horizons and the Onset of the Pioneer Anomaly  

E-Print Network (OSTI)

Analysis of the radio tracking data from the Pioneer 10/11 spacecraft at distances between about 20 - 70 AU from the Sun has indicated the presence of an unmodeled, small, constant, Doppler blue shift which can be interpreted as a constant acceleration of a_P= (8.74 \\pm 1.33) \\times 10^{-8} cm/s^2 directed approximately {\\it towards} the Sun. In addition, there is early (roughly modeled) data from as close in as 5 AU which indicates there may have been an onset of the anomaly near Saturn. We observe that the data now arriving from the New Horizons mission to Pluto and the Kuiper Belt could allow a relatively easy, direct experimental test of whether this onset is associated with distance from the Sun (being, for example, an effect of drag on dark matter). We strongly urge that this test be done.

Nieto, Michael Martin

2008-01-01T23:59:59.000Z

226

New Horizons and the Onset of the Pioneer Anomaly  

E-Print Network (OSTI)

Analysis of the radio tracking data from the Pioneer 10/11 spacecraft at distances between about 20 - 70 AU from the Sun has indicated the presence of an unmodeled, small, constant, Doppler blue shift which can be interpreted as a constant acceleration of a_P= (8.74 \\pm 1.33) \\times 10^{-8} cm/s^2 directed approximately towards the Sun. In addition, there is early (roughly modeled) data from as close in as 5 AU which indicates there may have been an onset of the anomaly near Saturn. We observe that the data now arriving from the New Horizons mission to Pluto and the Kuiper Belt could allow a relatively easy, direct experimental test of whether this onset is associated with distance from the Sun (being, for example, an effect of drag on dark matter). We strongly urge that this test be done.

Michael Martin Nieto

2007-10-26T23:59:59.000Z

227

Southern Ocean Climate and Sea Ice Anomalies Associated with the Southern Oscillation  

Science Conference Proceedings (OSTI)

The anomalies in the climate and sea ice cover of the Southern Ocean and their relationships with the Southern Oscillation (SO) are investigated using a 17-yr dataset from 1982 to 1998. The polar climate anomalies are correlated with the Southern ...

R. Kwok; J. C. Comiso

2002-03-01T23:59:59.000Z

228

Simple, state-based approaches to program-based anomaly detection  

Science Conference Proceedings (OSTI)

This article describes variants of two state-based intrusion detection algorithms from Michael and Ghosh [2000] and Ghosh et al. [2000], and gives experimental results on their performance. The algorithms detect anomalies in execution audit data. One ... Keywords: Anomaly detection, finite automata, information system security, intrusion detection, machine learning

C. C. Michael; Anup Ghosh

2002-08-01T23:59:59.000Z

229

Liquid polymorphism and density anomaly in a three-dimensional associating lattice gas  

E-Print Network (OSTI)

Liquid polymorphism and density anomaly in a three-dimensional associating lattice gas Mauricio-dimensional associating lattice gas (ALG) model. This model combines orientational ice-like interactions and "van der the presence of two liquid phase, two critical points and density anomaly. PACS numbers: 1 #12;I. INTRODUCTION

Barbosa, Marcia C. B.

230

Geochemical anomalies in soil and sandstone overlying the Phoenix uranium deposit, Athabasca Basin Natural Resources  

E-Print Network (OSTI)

Collaboration Introduction The Wheeler River Property, host of Denison Mine's Phoenix uranium depositCo Mo Ni UU Geochemical anomalies in soil and sandstone overlying the Phoenix uranium deposit is the most efficient analytical method to detect these anomalies. Athabasca Basin Figure 1: Denison Mine

231

Gravity anomalies of the Northern Hawaiian Islands: Implications on the shield evolutions of Kauai and Niihau  

E-Print Network (OSTI)

Gravity anomalies of the Northern Hawaiian Islands: Implications on the shield evolutions of Kauai January 2010; accepted 16 March 2010; published 31 August 2010. [1] New land and marine gravity data reveal two positive residual gravity anomalies in the Northern Hawaiian Islands: one over Kaua

Ito, Garrett

232

Anomaly detection in extremist web forums using a dynamical systems approach  

Science Conference Proceedings (OSTI)

In this paper, we present preliminary results of analyzing data from the Dark Web collection using a dynamical systems approach for unsupervised anomaly detection. The goal is to provide a robust, focus-of-attention mechanism to identify emerging threats ... Keywords: data mining, dynamical systems, finite-time Lyapunov exponents, unsupervised anomaly detection

Steve Kramer

2010-07-01T23:59:59.000Z

233

Anomaly detection via feature-aided tracking and hidden Markov models  

Science Conference Proceedings (OSTI)

The problem of detecting an anomaly (or abnormal event) is such that the distribution of observations is different before and after an unknown onset time, and the objective is to detect the change by statistically matching the observed pattern with that ... Keywords: anomaly detection, asymmetric threats, change detection, hidden Markov models

Satnam Singh; Haiying Tu; William Donat; Krishna Pattipati; Peter Willett

2009-01-01T23:59:59.000Z

234

M-AID: An adaptive middleware built upon anomaly detectors for intrusion detection and rational response  

Science Conference Proceedings (OSTI)

Anomaly-based intrusion detection is about the discrimination of malicious and legitimate behaviors on the basis of the characterization of system normality in terms of particular observable subjects. As the system normality is constructed solely from ... Keywords: Anomaly detection, POMDP, intrusion detection, network security, security metrics, security policy

Zonghua Zhang; Hong Shen

2009-11-01T23:59:59.000Z

235

Weighting versus pruning in rule validation for detecting network and host anomalies  

Science Conference Proceedings (OSTI)

For intrusion detection, the LERAD algorithm learns a succinct set of comprehensible rules for detecting anomalies, which could be novel attacks. LERAD validates the learned rules on a separate held-out validation set and removes rules that cause ... Keywords: anomaly detection, machine learning, rule pruning, rule weighting

Gaurav Tandon; Philip K. Chan

2007-08-01T23:59:59.000Z

236

Anomaly detection in wireless sensor networks using self-organizing map and wavelets  

Science Conference Proceedings (OSTI)

Wireless Sensor Networks (WSNs) have been applied in agriculture monitoring to monitor and collect various physical attributes within a specific area. It is important to detect data anomalies to determine a suitable course of action. The underlying aim ... Keywords: agriculture monitoring, anomaly detection, discrete wavelet transform, self-organizing map, wavelets, wireless sensor networks

Supakit Siripanadorn; Wipawee Hattagam; Neung Teaumroong

2010-10-01T23:59:59.000Z

237

DADICC: Intelligent system for anomaly detection in a combined cycle gas turbine plant  

Science Conference Proceedings (OSTI)

DADICC is the abbreviated name for an intelligent system able to detect on-line and diagnose anomalies as soon as possible in the dynamic evolution of the behaviour of a power plant based on a combined cycle gas turbine. In order to reach this objective, ... Keywords: Anomaly detection, Diagnosis, Expert system, Multi-agent system, Neural network, Normal behaviour

Antonio Arranz; Alberto Cruz; Miguel A. Sanz-Bobi; Pablo Ruíz; Josué Coutiño

2008-05-01T23:59:59.000Z

238

One class classification for anomaly detection: support vector data description revisited  

Science Conference Proceedings (OSTI)

The Support Vector Data Description (SVDD) has been introduced to address the problem of anomaly (or outlier) detection. It essentially fits the smallest possible sphere around the given data points, allowing some points to be excluded as outliers. Whether ... Keywords: anomaly detection, minimal sphere fitting, one class classification, outlier detection, support vector data description

Eric J. Pauwels; Onkar Ambekar

2011-08-01T23:59:59.000Z

239

Variability in Daily, Zonal Mean Lower-Stratospheric Temperatures  

Science Conference Proceedings (OSTI)

Satellite data from the microwave sounding unit (MSU) channel 4, when carefully merged, provide daily zonal anomalies of lower-stratosphere temperature with a level of precision between 0.01° and 0.08°C per 2.5° latitude band. Global averages of ...

John R. Christy; S. James Drouilhet Jr.

1994-01-01T23:59:59.000Z

240

Possible Causes of Anomalies in Seasonal Mean Circulation Patterns during the 1982–83 El Niño Event  

Science Conference Proceedings (OSTI)

For six consecutive seasons around the 1982–83 El Niño event the relation between observed anomalies in atmospheric circulation patterns and anomalies in various forcing mechanisms is diagnosed. A linear model is used in an attempt to simulate ...

C. J. Kok; J. D. Opsteegh

1985-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Impact of Vegetation Feedback on the Response of Precipitation to Antecedent Soil Moisture Anomalies over North America  

Science Conference Proceedings (OSTI)

Previous studies support a positive soil moisture–precipitation feedback over a major fraction of North America; that is, initial soil moisture anomalies lead to precipitation anomalies of the same sign. To investigate how vegetation feedback ...

Yeonjoo Kim; Guiling Wang

2007-06-01T23:59:59.000Z

242

Strength anomaly in B2 FeAl single crystals  

Science Conference Proceedings (OSTI)

Strength and deformation microstructure of B2 Fe-39 and 48%Al single crystals (composition given in atomic percent), which were fully annealed to remove frozen-in vacancies, have been investigated at temperatures between room temperature and 1073K. The hardness of as-homogenized Fe-48Al is higher than that of as-homogenized Fe-39Al while after additional annealing at 698K the hardness of Fe-48Al becomes lower than that of Fe-39Al. Fe-39Al single crystals slowly cooled after homogenizing at a high temperature were deformed in compression as a function of temperature and crystal orientation. A peak of yield strength appears around 0.5T{sub m} (T{sub m} = melting temperature). The orientation dependence of the critical resolved shear stress does not obey Schmid`s law even at room temperature and is quite different from that of b.c.c. metals and B2 intermetallics at low temperatures. At the peak temperature slip transition from -type to -type is found to occur macroscopically and microscopically, while it is observed in TEM that some of the [111] dislocations decompose into [101] and [010] on the (1096I) plane below the peak temperature. The physical sources for the positive temperature dependence of yield stress of B2 FeAl are discussed based on the obtained results.

Yoshimi, K.; Hanada, S.; Yoo, M.H. [Oak Ridge National Lab., TN (United States); Matsumoto, N. [Tohoku Univ. (Japan). Graduate School

1994-12-31T23:59:59.000Z

243

Hydrocarbon anomaly in soil gas as near-surface expressions of upflows and outflows in geothermal systems  

SciTech Connect

A variety of hydrocarbons, C1 - C12, have been found in volcanic gases (fumarolic) and in geothermal waters and gases. The hydrocarbons are thought to have come from products of pyrolysis of kerogen in sedimentary rocks or they could be fed into the geothermal system by the recharging waters which may contain dissolved hydrocarbons or hydrocarbons extracted by the waters from the rocks. In the hot geothermal zone, 300°+ C, many of these hydrocarbons are in their critical state. It is thought that they move upwards due to buoyancy and flux up with the upflowing geothermal fluids in the upflow zones together with the magmatic gases. Permeability which could be provided by faults, fissures, mini and micro fractures are thought to provide pathways for the upward flux. A sensitive technique (Petrex) utilizing passive integrative adsorption of the hydrocarbons in soil gas on activated charcoal followed by desorption and analysis of the hydrocarbons by direct introduction mass spectrometry allows mapping of the anomalous areas. Surveys for geothermal resources conducted in Japan and in Indonesia show that the hydrocarbon anomaly occur over known fields and over areas strongly suspected of geothermal potential. The hydrocarbons found and identified were n-paraffins (C7-C9) and aromatics (C7-C8). Detection of permeable, i.e. active or open faults, parts of older faults which have been reactivated, e.g. by younger intersecting faults, and the area surrounding these faulted and permeable region is possible. The mechanism leading to the appearance of the hydrocarbon in the soil gas over upflow zones of the geothermal reservoir is proposed. The paraffins seems to be better pathfinders for the location of upflows than the aromatics. However the aromatics may, under certain circumstances, give better indications of the direction of the outflow of the geothermal system. It is thought that an upflow zone can be defined when conditions exist where the recharging waters containing the hydrocarbons feed into the geothermal kitchen. The existence of open and active faults, fissures, mini and micro fractures allow sufficient permeability for the gases to flux up and express themselves at the surface as hydrocarbon anomaly in the soil gas. When any of the requirements is absent, i.e. in the absence of the recharging waters, hydrocarbons, temperature, or permeability, no anomaly can be expected. It assumes a dynamic convective system, i.e. recharging waters, upflow and outflow. The anomalies however can define to a certain extent, regions of geothermal upflow, buoyant transport of gases, and frequently down-gradient of cooling waters.

Ong, H.L.; Higashihara, M.; Klusman, R.W.; Voorhees, K.J.; Pudjianto, R.; Ong, J

1996-01-24T23:59:59.000Z

244

Hydrocarbon anomaly in soil gas as near-surface expressions of upflows and outflows in geothermal systems  

Science Conference Proceedings (OSTI)

A variety of hydrocarbons, C1 - C12, have been found in volcanic gases (fumarolic) and in geothermal waters and gases. The hydrocarbons are thought to have come from products of pyrolysis of kerogen in sedimentary rocks or they could be fed into the geothermal system by the recharging waters which may contain dissolved hydrocarbons or hydrocarbons extracted by the waters from the rocks. In the hot geothermal zone, 300°+ C, many of these hydrocarbons are in their critical state. It is thought that they move upwards due to buoyancy and flux up with the upflowing geothermal fluids in the upflow zones together with the magmatic gases. Permeability which could be provided by faults, fissures, mini and micro fractures are thought to provide pathways for the upward flux. A sensitive technique (Petrex) utilizing passive integrative adsorption of the hydrocarbons in soil gas on activated charcoal followed by desorption and analysis of the hydrocarbons by direct introduction mass spectrometry allows mapping of the anomalous areas. Surveys for geothermal resources conducted in Japan and in Indonesia show that the hydrocarbon anomaly occur over known fields and over areas strongly suspected of geothermal potential. The hydrocarbons found and identified were n-paraffins (C7-C9) and aromatics (C7-C8). Detection of permeable, i.e. active or open faults, parts of older faults which have been reactivated, e.g. by younger intersecting faults, and the area surrounding these faulted and permeable region is possible. The mechanism leading to the appearance of the hydrocarbon in the soil gas over upflow zones of the geothermal reservoir is proposed. The paraffins seems to be better pathfinders for the location of upflows than the aromatics. However the aromatics may, under certain circumstances, give better indications of the direction of the outflow of the geothermal system. It is thought that an upflow zone can be defined when conditions exist where the recharging waters containing the hydrocarbons feed into the geothermal kitchen. The existence of open and active faults, fissures, mini and micro fractures allow sufficient permeability for the gases to flux up and express themselves at the surface as hydrocarbon anomaly in the soil gas. When any of the requirements is absent, i.e. in the absence of the recharging waters, hydrocarbons, temperature, or permeability, no anomaly can be expected. It assumes a dynamic convective system, i.e. recharging waters, upflow and outflow. The anomalies however can define to a certain extent, regions of geothermal upflow, buoyant transport of gases, and frequently down-gradient of cooling waters.

Ong, H.L.; Higashihara, M.; Klusman, R.W.; Voorhees, K.J.; Pudjianto, R.; Ong, J

1996-01-24T23:59:59.000Z

245

SCADA Protocol Anomaly Detection Utilizing Compression (SPADUC) 2013  

SciTech Connect

There is a significant need to protect the nation’s energy infrastructures from malicious actors using cyber methods. Supervisory, Control, and Data Acquisition (SCADA) systems may be vulnerable due to the insufficient security implemented during the design and deployment of these control systems. This is particularly true in older legacy SCADA systems that are still commonly in use. The purpose of INL’s research on the SCADA Protocol Anomaly Detection Utilizing Compression (SPADUC) project was to determine if and how data compression techniques could be used to identify and protect SCADA systems from cyber attacks. Initially, the concept was centered on how to train a compression algorithm to recognize normal control system traffic versus hostile network traffic. Because large portions of the TCP/IP message traffic (called packets) are repetitive, the concept of using compression techniques to differentiate “non-normal” traffic was proposed. In this manner, malicious SCADA traffic could be identified at the packet level prior to completing its payload. Previous research has shown that SCADA network traffic has traits desirable for compression analysis. This work investigated three different approaches to identify malicious SCADA network traffic using compression techniques. The preliminary analyses and results presented herein are clearly able to differentiate normal from malicious network traffic at the packet level at a very high confidence level for the conditions tested. Additionally, the master dictionary approach used in this research appears to initially provide a meaningful way to categorize and compare packets within a communication channel.

Gordon Rueff; Lyle Roybal; Denis Vollmer

2013-01-01T23:59:59.000Z

246

Sulfur, Chlorine, and Argon Abundances in Planetary Nebulae. IV: Synthesis and the Sulfur Anomaly  

E-Print Network (OSTI)

We have compiled a large sample of O, Ne, S, Cl, and Ar abundances which have been determined for 85 galactic planetary nebulae in a consistent and homogeneous manner using spectra extending from 3600-9600 Angstroms. Sulfur abundances have been computed using the near IR lines of [S III] 9069,9532 along with [S III] temperatures. We find average values, expressed logarithmically with a standard deviation, of log(S/O)=-1.91(+/-.24), log(Cl/O)=-3.52(+/-.16), and log(Ar/O)=-2.29(+/-.18), numbers consistent with previous studies of both planetary nebulae and H II regions. We also find a strong correlation between [O III] and [S III] temperatures among planetary nebulae. In analyzing abundances of Ne, S, Cl, and Ar with respect to O, we find a tight correlation for Ne-O, and loose correlations for Cl-O and Ar-O. All three trends appear to be colinear with observed correlations for H II regions. S and O also show a correlation but there is a definite offset from the behavior exhibited by H II regions and stars. We suggest that this S anomaly is most easily explained by the existence of S^+3, whose abundance must be inferred indirectly when only optical spectra are available, in amounts in excess of what is predicted by model-derived ionization correction factors. Finally for the disk PNe, abundances of O, Ne, S, Cl, and Ar all show gradients when plotted against galactocentric distance. The slopes are statistically indistinguishable from one another, a result which is consistent with the notion that the cosmic abundances of these elements evolve in lockstep.

R. B. C. Henry; K. B. Kwitter; Bruce Balick

2004-01-09T23:59:59.000Z

247

Radiance Temperature  

Science Conference Proceedings (OSTI)

... Temperature using Detectors Calibrated for Absolute Spectral Power Response, HW ... A Third Generation Water Bath Based Blackbody Source, JB ...

2013-06-27T23:59:59.000Z

248

Self-energy anomaly of an electric pointlike dipole in three-dimensional static spacetimes  

E-Print Network (OSTI)

We calculate the self-energy anomaly of a pointlike electric dipole located in a static $(2+1)$-dimensional curved spacetime. The energy functional for this problem is invariant under an infinite-dimensional (gauge) group of transformations parameterized by one scalar function of two variables. We demonstrate that the problem of the calculation of the self-energy anomaly for a pointlike dipole can be reduced to the calculation of quantum fluctuations of an effective two-dimensional Euclidean quantum field theory. We reduced the problem in question to the calculation of the conformal anomaly of an effective scalar field in two dimensions and obtained an explicit expression for the self-energy anomaly of an electric dipole in an asymptotically flat, regular $(2+1)$-dimensional spacetime which may have electrically neutral black-hole-like metrics with regular Killing horizon.

Valeri P. Frolov; Andrey A. Shoom; Andrei Zelnikov

2013-03-07T23:59:59.000Z

249

Maintenance of Circulation Anomalies during the 1988 Drought and 1993 Floods over the United States  

Science Conference Proceedings (OSTI)

The large-scale circulation anomalies associated with the 1988 drought and the 1993 floods are investigated with the National Centers for Environmental Prediction Reanalysis data and a linear stationary wave model. The transient vorticity and ...

Alan Z. Liu; Mingfang Ting; Hailan Wang

1998-09-01T23:59:59.000Z

250

Seasonality of the ENSO-Related Rainfall Variability in Central Chile and Associated Circulation Anomalies  

Science Conference Proceedings (OSTI)

The seasonality of the ENSO–rainfall relationship in central Chile (30°–41°S) and associated circulation anomalies are studied using correlation and compositing techniques. During El Niño episodes there is a tendency for the occurrence of above-...

Aldo Montecinos; Patricio Aceituno

2003-01-01T23:59:59.000Z

251

Modeling the Surface Heat Flux Response to Long-Lived SST Anomalies in the North Atlantic  

Science Conference Proceedings (OSTI)

An atmospheric general circulation model (AGCM), a simplified atmospheric model (SAM) of surface heat flux, and various idealized analytic models have been used to investigate the atmospheric response over the North Atlantic to SST anomalies ...

S. B. Power; R. Kleeman; R. A. Colman; B. J. McAvaney

1995-09-01T23:59:59.000Z

252

Diagnosis of Regional Monthly Anomalies Using the Adjoint Method. Part II: Potential Vorticity  

Science Conference Proceedings (OSTI)

An equivalent barotropic tracer model and its adjoint are used to examine observed central European anomalies of potential vorticity (PV) in terms of advection and diabatic effects. The PV viewpoint yields a similar picture of six January ...

Andrew W. Robertson

1992-06-01T23:59:59.000Z

253

The COLA Global Coupled and Anomaly Coupled Ocean–Atmosphere GCM  

Science Conference Proceedings (OSTI)

The Center for Ocean–Land–Atmosphere Studies (COLA) global coupled and anomaly coupled ocean–atmosphere GCM models are described. The ocean and atmosphere components of these coupled models are identical. The only difference between them is in ...

Ben P. Kirtman; Yun Fan; Edwin K. Schneider

2002-09-01T23:59:59.000Z

254

Role of Multiple-Level Tropospheric Circulations in Forcing ENSO Winter Precipitation Anomalies  

Science Conference Proceedings (OSTI)

Regionally organized winter (DJF) precipitation anomalies over North America are presented in association with cold and warm phases of the El Niño–Southern Oscillation. Variations in low-level flow from moisture sources and in upper-level dynamic ...

Shawn R. Smith; Phaedra M. Green; Alan P. Leonardi; James J. O’Brien

1998-12-01T23:59:59.000Z

255

Atmospheric Circulation Anomalies during Episodes of Enhanced and Reduced Convective Cloudiness over Uruguay  

Science Conference Proceedings (OSTI)

Regional and large-scale circulation anomalies associated with periods of enhanced and reduced convective cloudiness over Uruguay are studied for austral spring and summer, when rainfall associated with deep convection is more frequent in this ...

Alvaro DÍaz; Patricio Aceituno

2003-10-01T23:59:59.000Z

256

A String Function for Describing the Propagation of Baroclinic Anomalies in the Ocean  

Science Conference Proceedings (OSTI)

The authors derive a string function that describes the propagation of large-scale, potentially large amplitude, baroclinic energy anomalies in a two-layer ocean with variable topography and rotation parameter. The generality of the two-layer ...

Robert H. Tyler; Rolf Käse

2001-03-01T23:59:59.000Z

257

Forecasting Northern Hemisphere 700-mb Geopotential Height Anomalies Using Empirical Normal Modes  

Science Conference Proceedings (OSTI)

Multivariate linear prediction based on single-lag inverse modeling is developed further and critically examined. The method is applied to the National Meteorological Center analyses of Northern Hemisphere 700-mb geopotential height anomalies, ...

Cécile Penland; Michael Ghil

1993-08-01T23:59:59.000Z

258

Formation and Evolution of Frontal Rainbands and Geostrophic Potential Vorticity Anomalies  

Science Conference Proceedings (OSTI)

A viscous semigeostrophic model is developed and used to study the formation and evolution of frontal rainbands in association with the dry and moist geostrophic potential vorticity (GPV) anomalies. The numerical results show that when moist GPV (...

Qin Xu

1992-04-01T23:59:59.000Z

259

Anomaly detection in noisy and irregular time series: the "turbodiesel charging pressure" case study  

Science Conference Proceedings (OSTI)

In this paper we consider the problem of detecting anomalies in sample series obtained from critical train subsystems. Our study is the analysis of charging pressure in turbodiesel engines powering a fleet of passenger trains. We describe an automated ...

Anahì Balbi; Michael Provost; Armando Tacchella

2010-06-01T23:59:59.000Z

260

Latent and Sensible Heat Flux Anomalies over the Northern Oceans: The Connection to Monthly Atmospheric Circulation  

Science Conference Proceedings (OSTI)

The influence of the atmospheric circulation on monthly anomalies of ocean surface latent and sensible heat fluxes is explored. The fluxes are estimated using bulk formulas applied to a set of about four decades of marine observations over 1946–...

Daniel R. Cayan

1992-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Z' Bosons, the NuTeV Anomaly, and the Higgs Boson Mass  

E-Print Network (OSTI)

NuTeV Anomaly, and the Higgs Boson Mass Michael S. Chanowitzpredicted value of the Higgs boson mass, from ? 60 to ? 120from an increase in the Higgs boson mass. There is a vast

Chanowitz, Michael S

2009-01-01T23:59:59.000Z

262

Estimation of Tropical Sea Level Anomaly by an Improved Kalman Filter  

Science Conference Proceedings (OSTI)

Kaiman filter theory and autoregressive time series are used to map sea level height anomalies in the tropical Pacific. Our Kalman filters are implemented with a linear state space model consisting of evolution equations for the amplitudes of ...

Ngai Hang Chan; Joseph B. Kadane; Robert N. Miller; Wilfredo Palma

1996-07-01T23:59:59.000Z

263

Steady Linear Response to Thermal Forcing of an Anomaly Model with an Asymmetric Climatology  

Science Conference Proceedings (OSTI)

An anomaly model linearized around the observed winter climatology is used to study the steady response of the atmosphere to diabatic heating. The model is an R7, nine vertical levels, primitive equations, fully spectral model, derived from the ...

A. Navarra

1990-01-01T23:59:59.000Z

264

Do Stationary Waves Drive the Zonal-Mean Jet Anomalies of the Northern Winter?  

Science Conference Proceedings (OSTI)

The role of zonal-mean zonal flow (u) perturbations in generating anomalous stationary waves has been acknowledged since the 1939 study by Rossby and his collaborators. However, the dynamical mechanisms, which in turn produce the u anomalies, are ...

Eric DeWeaver; Sumant Nigam

2000-07-01T23:59:59.000Z

265

Life Cycles of Persistent Anomalies. Part I: Evolution of 500 mb Height Fields  

Science Conference Proceedings (OSTI)

We have conducted observational analysts to identify systematic aspects of the life cycles of persistent anomalies of the extratropical Northern Hemisphere wintertime circulation. In the present study, we focus on the typical characteristics of ...

Randall M. Dole

1989-01-01T23:59:59.000Z

266

Deducing Anomalous Wave Source Regions during the Life Cycles of Persistent Flow Anomalies  

Science Conference Proceedings (OSTI)

Anomalous wave source regions are identified during the life cycles of persistent flow anomalies occurring over the North Pacific and North Atlantic Oceans during boreal winter. These cases project strongly upon the Pacific–North American and ...

Robert X. Black

1997-04-01T23:59:59.000Z

267

Circulation Regimes of Rainfall Anomalies in the African-South Asian Monsoon Belt  

Science Conference Proceedings (OSTI)

This study explores the spatial differentiation of climate anomalies and associated circulation mechanisms across the African-South Asian monsoon belt through empirical analyses mainly for the period 1948–83. Observations include surface ship ...

Uma S. Bhatt

1989-10-01T23:59:59.000Z

268

Classification of 500 mb Height Anomalies Using Obliquely Rotated Principal Components  

Science Conference Proceedings (OSTI)

The objective of this study was to classify 500 mb height anomaly patterns for North America using principal component analysis with oblique rotation. Two versions of the oblique rotation, oblimax and direct oblimin, were applied to two gridded ...

Stewart J. Cohen

1983-12-01T23:59:59.000Z

269

Structure of Large-Scale Convective Anomalies over Tropical Oceans  

Science Conference Proceedings (OSTI)

Geographical variations in the variance and cross-correlation of monthly mean sea surface temperature (SST), outgoing longwave radiation (OLR, a proxy for deep convection and vertical motion), and convergence of winds at the surface and at 850 mb ...

David S. Gutzler; Tamara M. Wood

1990-04-01T23:59:59.000Z

270

One-Month Forecast Experiments—without Anomaly Boundary Forcings  

Science Conference Proceedings (OSTI)

A series of one-month forecasts were carried out for eight January cases, using a particular prediction model and prescribing climatological sea-surface temperature as the boundary condition. Each forecast is a stochastic prediction that consists ...

K. Miyakoda; J. Sirutis; J. Ploshay

1986-12-01T23:59:59.000Z

271

Geothermal low-temperature reservoir assessment in Dona Ana County, New Mexico. Final report  

DOE Green Energy (OSTI)

Sixty-four shallow temperature gradient holes were drilled on the Mesilla Valley East Mesa (east of Interstate Highways 10 and 25), stretching from US Highway 70 north of Las Cruces to NM Highway 404 adjacent to Anthony, New Mexico. Using these data as part of the site selection process, Chaffee Geothermal, Ltd. of Denver, Colorado, drilled two low-temperature geothermal production wells to the immediate north and south of Tortugas Mountain and encountered a significant low-temperature reservoir, with a temperature of about 150{sup 0}F and flow rates of 750 to 1500 gallons per minute at depths from 650 to 1250 feet. These joint exploration activities resulted in the discovery and confirmation of a 30-square-mile low-temperature geothermal anomaly just a few miles to the east of Las Cruces that has been newly named as the Las Cruces east Mesa Geothermal Field. Elevated temperature and heat flow data suggest that the thermal anomaly is fault controlled and extends southward to the Texas border covering a 100-square-mile area. With the exception of some localized perturbations, the anomaly appears to decrease in temperature from the north to the south. Deeper drilling is required in the southern part of the anomaly to confirm the existence of commercially-exploitable geothermal waters.

Icerman, L.; Lohse, R.L.

1983-04-01T23:59:59.000Z

272

Feasibility of detecting artificial magnetic anomalies in hydrofractured rock by superconducting gradiometer-SQUID systems  

DOE Green Energy (OSTI)

A study of the signal physics of magnetic anomaly detection by superconducting gradiometer-SQUID systems to determine the feasibility of possible applications to the geothermal energy program is described. The system would make full use of the incredible sensitivity of the superconducting quantum interference device (SQUID) which can be in the range of 10/sup -11/ Oe. In addition to magnetic anomalies in the earth's field produced by spherical distributions of magnetic matter, anomalies that would be artificially produced by flooding magnetic material into cracks produced by hydrofracturing in deep boreholes drilled into dry rock geothermal sources are considered. The study indicates that surface detection by horizontal and vertical gradiometers of crack anomalies will not be feasible if the magnetic material flooding the crack is a paramagnetic solution. However, one can concoct a slurry to carry prepolarized ferromagnetic particles of a size sufficiently large to permit domain formation but small enough to permit rotation and alignment in the earth's field. In this case, the anomaly signal is large enough to permit extraction of anomaly orientation information out of the background of magnetic noise and earth's field gradients. The superconducting gradiometer-SQUID system is shown to be exceptional in its capability of removing undesirable magnetic noise and gradients. The greatest promise was found in systems that would be comprised of a magnetometer or gradiometer that could be lowered into the borehole to positions opposite the formations cracked by hydrofracturing. The use of a paramagnetic material to produce the artificial anomaly will not provide signals of sufficient amplitude to overcome the magnetic noise. However, the slurry containing only one percent by volume of ferromagnetic particles will produce a crack anomaly that is easily detectable by magnetometer or by the superconducting gradiometer-SQUID system.

Overton, W.C. Jr.

1976-12-01T23:59:59.000Z

273

Addressing the Challenges of Anomaly Detection for Cyber Physical Energy Grid Systems  

Science Conference Proceedings (OSTI)

The consolidation of cyber communications networks and physical control systems within the energy smart grid introduces a number of new risks. Unfortunately, these risks are largely unknown and poorly understood, yet include very high impact losses from attack and component failures. One important aspect of risk management is the detection of anomalies and changes. However, anomaly detection within cyber security remains a difficult, open problem, with special challenges in dealing with false alert rates and heterogeneous data. Furthermore, the integration of cyber and physical dynamics is often intractable. And, because of their broad scope, energy grid cyber-physical systems must be analyzed at multiple scales, from individual components, up to network level dynamics. We describe an improved approach to anomaly detection that combines three important aspects. First, system dynamics are modeled using a reduced order model for greater computational tractability. Second, a probabilistic and principled approach to anomaly detection is adopted that allows for regulation of false alerts and comparison of anomalies across heterogeneous data sources. Third, a hierarchy of aggregations are constructed to support interactive and automated analyses of anomalies at multiple scales.

Ferragut, Erik M [ORNL; Laska, Jason A [ORNL; Melin, Alexander M [ORNL; Czejdo, Bogdan [ORNL

2013-01-01T23:59:59.000Z

274

NASA GISS Surface Temperature (GISTEMP) Analysis  

NLE Websites -- All DOE Office Websites (Extended Search)

NASA GISS Surface Temperature (GISTEMP) Analysis NASA GISS Surface Temperature (GISTEMP) Analysis DOI: 10.3334/CDIAC/cli.001 Graphics Graphics data Data Contributors Hansen, J.E.,1 R. Ruedy,2 M. Sato,3 and K. Lo2 1National Aeronautics and Space Administration, 2SGT, Inc., 3Columbia University, Center for Climate Systems Research, NASA Goddard Institute for Space Studies, 2880 Broadway, New York, NY 10025 USA Period of Record 1880-2012 (Anomalies are relative to the 1951-80 base period means.) Methods The NASA GISS Surface Temperature (GISTEMP) analysis provides a measure of the changing global surface temperature with monthly resolution for the period since 1880, when a reasonably global distribution of meteorological stations was established. The input data Hansen et al. use for the analysis, collected by many national meteorological services around the

275

Metastable liquid-liquid coexistence and density anomalies in a core-softened fluid  

E-Print Network (OSTI)

Linearly-sloped or `ramp' potentials belong to a class of core-softened models which possess a liquid-liquid critical point (LLCP) in addition to the usual liquid-gas critical point. Furthermore they exhibit thermodynamic anomalies in the density and compressibility, the nature of which may be akin to those occurring in water. Previous simulation studies of ramp potentials have focused on just one functional form, for which the LLCP is thermodynamically stable. In this work we construct a series of ramp potentials, which interpolate between this previously studied form and a ramp-based approximation to the Lennard-Jones (LJ) potential. By means of Monte Carlo simulation, we locate the LLCP, the first order high density liquid (HDL)-low density liquid (LDL) coexistence line, and the line of density maxima for a selection of potentials in the series. We observe that as the LJ limit is approached, the LLCP becomes metastable with respect to freezing into a hexagonal close packed crystalline solid. The qualitative nature of the phase behaviour in this regime shows a remarkable resemblance to that seen in simulation studies of accurate water models. Specifically, the density of the liquid phase exceeds that of the solid; the gradient of the metastable LDL-HDL line is negative in the pressure (p)-temperature (T) plane; while the line of density maxima in the p-T plane has a shape similar to that seen in water and extends well into the {\\em stable} liquid region of the phase diagram. As such, our results lend weight to the `second critical point' hypothesis as an explanation for the anomalous behaviour of water.

Helen M. Gibson; Nigel B. Wilding

2006-01-20T23:59:59.000Z

276

Improving Cyber-Security of Smart Grid Systems via Anomaly Detection and Linguistic Domain Knowledge  

Science Conference Proceedings (OSTI)

The planned large scale deployment of smart grid network devices will generate a large amount of information exchanged over various types of communication networks. The implementation of these critical systems will require appropriate cyber-security measures. A network anomaly detection solution is considered in this work. In common network architectures multiple communications streams are simultaneously present, making it difficult to build an anomaly detection solution for the entire system. In addition, common anomaly detection algorithms require specification of a sensitivity threshold, which inevitably leads to a tradeoff between false positives and false negatives rates. In order to alleviate these issues, this paper proposes a novel anomaly detection architecture. The designed system applies the previously developed network security cyber-sensor method to individual selected communication streams allowing for learning accurate normal network behavior models. Furthermore, the developed system dynamically adjusts the sensitivity threshold of each anomaly detection algorithm based on domain knowledge about the specific network system. It is proposed to model this domain knowledge using Interval Type-2 Fuzzy Logic rules, which linguistically describe the relationship between various features of the network communication and the possibility of a cyber attack. The proposed method was tested on experimental smart grid system demonstrating enhanced cyber-security.

Ondrej Linda; Todd Vollmer; Milos Manic

2012-08-01T23:59:59.000Z

277

Apparatus and method for detecting a magnetic anomaly contiguous to remote location by SQUID gradiometer and magnetometer systems  

DOE Patents (OSTI)

A superconducting quantum interference device (SQUID) magnetic detection apparatus detects magnetic fields, signals, and anomalies at remote locations. Two remotely rotatable SQUID gradiometers may be housed in a cryogenic environment to search for and locate unambiguously magnetic anomalies. The SQUID magnetic detection apparatus can be used to determine the azimuth of a hydrofracture by first flooding the hydrofracture with a ferrofluid to create an artificial magnetic anomaly therein.

Overton, W.C. Jr.; Steyert, W.A. Jr.

1981-05-22T23:59:59.000Z

278

Comparative studies of geothermal surveys in 3-meter and temperature-gradient holes  

Science Conference Proceedings (OSTI)

The reliability of conducting temperature surveys within the upper 3 meters of the surface to map geothermal anomalies is demonstrated in experiments at two prospects in which deeper gradient hole data were obtained. The 3m temperatures faithfully outlined the thermal anomaly at McCoy, Nevada; and in Dixie Valley, NV 3m surveys reproduced and detailed patterns derived from 40m data. These encouraging results led to the development of multi-thermistor strings for logging the seasonal wave within the upper 3 meters. From many such logs, diffusivity variations can be detected, which might otherwise be misconstrued as thermal anomalies. The technique is demonstrated by a typical Basin-Range reconnaissance project. As many as 10 or more 3m holes can be emplaced in the time required for a conventional gradient well, and with considerably less impact on the environment.

Lang, A.L.; Deymonaz, J.; Pilkington, H.D.

1982-10-01T23:59:59.000Z

279

IN SEARCH FOR THERMAL ANOMALIES IN THE COSO GEOTHERMAL FIELD (CALIFORNIA)  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » IN SEARCH FOR THERMAL ANOMALIES IN THE COSO GEOTHERMAL FIELD (CALIFORNIA) USING REMOTE SENSING AND FIELD DATA Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: IN SEARCH FOR THERMAL ANOMALIES IN THE COSO GEOTHERMAL FIELD (CALIFORNIA) USING REMOTE SENSING AND FIELD DATA Details Activities (2) Areas (1) Regions (0) Abstract: We attempt to identify thermal anomalies using thermal infrared (TIR) data collected over the Coso Geothermal Power Project with the spaceborne ASTER instrument. Our analysis emphasizes corrections for thermal artifacts in the satellite images caused by topography, albedo, and

280

Electric/magnetic duality for chiral gauge theories with anomaly cancellation  

E-Print Network (OSTI)

We show that 4D gauge theories with Green-Schwarz anomaly cancellation and possible generalized Chern-Simons terms admit a formulation that is manifestly covariant with respect to electric/magnetic duality transformations. This generalizes previous work on the symplectically covariant formulation of anomaly-free gauge theories as they typically occur in extended supergravity, and now also includes general theories with (pseudo-)anomalous gauge interactions as they may occur in global or local N=1 supersymmetry. This generalization is achieved by relaxing the linear constraint on the embedding tensor so as to allow for a symmetric 3-tensor related to electric and/or magnetic quantum anomalies in these theories. Apart from electric and magnetic gauge fields, the resulting Lagrangians also feature two-form fields and can accommodate various unusual duality frames as they often appear, e.g., in string compactifications with background fluxes.

Jan De Rydt; Torsten T. Schmidt; Mario Trigiante; Antoine Van Proeyen; Marco Zagermann

2008-08-15T23:59:59.000Z

Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

A Shallow Attenuating Anomaly Inside The Ring Fracture Of The Valles  

Open Energy Info (EERE)

Shallow Attenuating Anomaly Inside The Ring Fracture Of The Valles Shallow Attenuating Anomaly Inside The Ring Fracture Of The Valles Caldera, New Mexico Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Shallow Attenuating Anomaly Inside The Ring Fracture Of The Valles Caldera, New Mexico Details Activities (4) Areas (2) Regions (0) Abstract: Spectral ratios of teleseismic direct and scattered P waves observed in the Valles Caldera, New Mexico, show a systematic pattern of low amplitudes at sites inside the caldera relative to sites on or outside the ring fracture. Waveforms recorded at caldera stations are considerably more complex than those recorded outside the caldera. The data used in this study were collected during a passive seismic monitoring experiment conducted in 1987. Twenty-four teleseismic events were recorded on two

282

Investigations of the torque anomaly in an annular sector. II. Global calculations, electromagnetic case  

E-Print Network (OSTI)

Recently, it was suggested that there was some sort of breakdown of quantum field theory in the presence of boundaries, manifesting itself as a torque anomaly. In particular, Fulling et al. used the finite energy-momentum-stress tensor in the presence of a perfectly conducting wedge, calculated many years ago by Deutsch and Candelas, to compute the torque on one of the wedge boundaries, where the latter was cutoff by integrating the torque density down to minimum lower radius greater than zero. They observed that that torque is not equal to the negative derivative of the energy obtained by integrating the energy density down to the same minimum radius. This motivated a calculation of the torque and energy in an annular sector obtained by the intersection of the wedge with two coaxial cylinders. In a previous paper we showed that for the analogous scalar case, which also exhibited a torque anomaly in the absence of the cylindrical boundaries, the point-split regulated torque and energy indeed exhibit an anomaly, unless the point-splitting is along the axis direction. In any case, because of curvature divergences, no unambiguous finite part can be extracted. However, that ambiguity is linear in the wedge angle; if the condition is imposed that the linear term be removed, the resulting torque and energy is finite, and exhibits no anomaly. In this paper, we demonstrate the same phenomenon takes place for the electromagnetic field, so there is no torque anomaly present here either. This is a nontrivial generalization, since the anomaly found by Fulling et al. is linear for the Dirichlet scalar case, but nonlinear for the conducting electromagnetic case.

Kimball A. Milton; Prachi Parashar; E. K. Abalo; Fardin Kheirandish; Klaus Kirsten

2013-07-09T23:59:59.000Z

283

Striking nitrogen isotope anomaly in the Bencubbin and Weatherford meteorites  

SciTech Connect

The stony-iron meteorites Bencubbin and Weatherford contain nitrogen with a ratio of nitrogen-15 to nitrogen-14 larger than normal by as much as a factor of 2. The excess nitrogen-15 may be due either to a nucleosynthetic origin or to extreme isotopic fractionation. In the former case, it may reflect failure to homogenize nitrogen-15 produced in nova explosions. In the latter case, it may reflect chemical processing at temperatures below 40 K in a presolar molecular cloud. 34 references.

Prombo, C.A.; Clayton, R.N.

1985-11-01T23:59:59.000Z

284

TRENDS: TEMPERATURE  

NLE Websites -- All DOE Office Websites (Extended Search)

Historical Isotopic Temperature Record from the Vostok Ice Core Historical Isotopic Temperature Record from the Vostok Ice Core Graphics Digital Data J.R. Petit, D. Raynaud, and C. Lorius Laboratoire de Glaciogie et Géophysique de l'Environnement, CNRS, Saint Martin d'Hères Cedex, France J. Jouzel and G. Delaygue Laboratoire des Sciences du Climat et de l'Environnement (LSCE), CEA/CNRS, L'Orme des Merisiers, CEA Saclay, 91191 Gif-sur-Yvette Cedex, France N.I. Barkov Arctic and Antarctic Research Institute, Beringa Street 38, 199397 St. Petersburg, Russia V.M. Kotlyakov Institute of Geography, Staromonetny, per 29, Moscow 109017, Russia DOI: 10.3334/CDIAC/cli.006 Period of Record 420,000 years BP-present Methods Because isotopic fractions of the heavier oxygen-18 (18O) and deuterium (D) in snowfall are temperature-dependent and a strong spatial correlation

285

Results of temperature gradient and heat flow in Santiam Pass Area, Oregon, Volume 1  

DOE Green Energy (OSTI)

The conclusions of this report are: (1) There is a weakly defined thermal anomaly within the area examined by temperature-gradient holes in the Santiam Pass area. This is a relict anomaly showing differences in permeability between the High Cascades and Western Cascades areas, more than a fundamental difference in shallow crustal temperatures. (2) The anomaly as defined by the 60 F isotherms at 400 feet follows a north-south trend immediately westward of the Cascade axis in the boundary region. It is clear that all holes spudded into High Cascades rocks result in isothermal and reversal gradients. Holes spudded in Western Cascades rocks result in positive gradients. (3) Cold groundwater flow influences and masks temperature gradients in the High Cascades to a depth of at least 700 feet, especially eastward from the major north-south trending faults. Pleistocene and Holocene rocks are very permeable aquifers. (4) Shallow gradient drilling in the lowlands westward of the faults provides more interpretable information than shallow drilling in the cold-water recharge zones. Topographic and climatological effects can be filtered out of the temperature gradient results. (5) The thermal anomaly seems to have 2 centers: one in the Belknap-Foley area, and one northward in the Sand Mountain area. The anomalies may or may not be connected along a north-south trend. (6) A geothermal effect is seen in holes downslope of the Western-High Cascade boundary. Mixing with cold waters is a powerful influence on temperature gradient data. (7) The temperature-gradient program has not yet examined and defined the geothermal resources potential of the area eastward of the Western Cascades-High Cascades boundary. Holes to 1500-2000 feet in depth are required to penetrate the high permeability-cold groundwater regime. (8) Drilling conditions are unfavorable. There are very few accessible level drill sites. Seasonal access problems and environmental restrictions together with frequent lost circulation results in very high costs per foot drilled.

Cox, B.L.; Gardner, M.C.; Koenig, J.B.

1981-08-01T23:59:59.000Z

286

Automated system for near-real time modelling and prediction of altimeter-derived sea level anomalies  

Science Conference Proceedings (OSTI)

This paper serves as a presentation of a novel geoinformation system and a dedicated service, jointly named as Prognocean and based at the University of Wroclaw (Poland), that aim to predict Sea Level Anomaly (SLA) maps and publish them online. The system ... Keywords: Geoinformation, Modelling, Prediction, Satellite altimetry, Sea level anomaly, System

Tomasz Niedzielski, Bart?Omiej Mizi?Ski

2013-08-01T23:59:59.000Z

287

Improved Skill for the Anomaly Correlation of Geopotential Heights at 500 hPa  

Science Conference Proceedings (OSTI)

This paper addresses the anomaly correlation of the 500-hPa geopotential heights from a suite of global multimodels and from a model-weighted ensemble mean called the superensemble. This procedure follows a number of current studies on weather ...

T. N. Krishnamurti; K. Rajendran; T. S. V. Vijaya Kumar; Stephen Lord; Zoltan Toth; Xiaolei Zou; Steven Cocke; Jon E. Ahlquist; I. Michael Navon

2003-06-01T23:59:59.000Z

288

RFID-based human behavior modeling and anomaly detection for elderly care  

Science Conference Proceedings (OSTI)

This research aimed at building an intelligent system that can detect abnormal behavior for the elderly at home. Active RFID tags can be deployed at home to help collect daily movement data of the elderly who carries an RFID reader. When the reader detects ... Keywords: RFID, anomaly detection, behavior modeling, clustering, elderly care

Hui-Huang Hsu; Chien-Chen Chen

2010-12-01T23:59:59.000Z

289

Data flow analysis for anomaly detection and identification toward resiliency in extreme scale systems  

Science Conference Proceedings (OSTI)

The increased complexity and scale of high performance computing and future extreme-scale systems have made resilience a key issue, since it is expected that future systems will have various faults during critical operations. It is also expected that ... Keywords: Anomaly, Data analysis, Fault detection and identification, Resilience

Byoung Uk Kim

2012-07-01T23:59:59.000Z

290

A new dissimilarity measure for trajectories with applications in anomaly detection  

Science Conference Proceedings (OSTI)

Trajectory clustering has been used to very effectively in the detection of anomalous behavior in video sequences. A key point in trajectory clustering is how to measure the (dis)similarity between two trajectories. This paper deals with a new dissimilarity ... Keywords: anomaly detection, dissimilarity, trajectory clustering

Dustin L. Espinosa-Isidrón; Edel B. García-Reyes

2010-11-01T23:59:59.000Z

291

Linkages between 200-mb Tropical and Extratropical Circulation Anomalies during the 1986–1989 ENSO Cycle  

Science Conference Proceedings (OSTI)

NMC operational wind analyses have been used to document the 200-mb circulation anomalies during the solstice seasons of the 1987–1989 ENSO cycle. Using the one-level vorticity balance diagnostic approach, the 200-mb Rossby wave anomalous source ...

Eugene M. Rasmusson; Kingtse Mo

1993-04-01T23:59:59.000Z

292

Modeling of North Pacific Climate Variability Forced by Oceanic Heat Flux Anomalies  

Science Conference Proceedings (OSTI)

Potential predictability of low-frequency climate changes in the North Pacific depends on two main factors. The first is the sensitivity of the atmosphere to ocean-induced anomalies at the sea surface in midlatitudes. The second is the degree of ...

Elena Yulaeva; Niklas Schneider; David W. Pierce; Tim P. Barnett

2001-10-01T23:59:59.000Z

293

Anomaly detection using self-organizing map and wavelets in wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless Sensor Networks (WSNs) have been developed and extensively applied in agriculture monitoring to monitor and collect various physical attributes within a specific area or environment of interest. Data readings from the sensors may be abnormal ... Keywords: agriculture monitoring, anomaly detection, discrete wavelet transform, self-organizing map, wavelets, wireless sensor networks

Supakit Siripanadorn; Wipawee Hattagam; Neung Teaumroong

2010-10-01T23:59:59.000Z

294

A prediction model for anomalies in smart grid with sensor network  

Science Conference Proceedings (OSTI)

A machine learning based model to monitor the smart grid for any suspicious activity or malicious attack is presented in this paper. The model is designed to detect and classify anomalies in the sensory data and is helpful in ensuring the security and ...

Shubhalaxmi Kher; Victor Nutt; Dipankar Dasgupta; Hasan Ali; Paul Mixon

2013-01-01T23:59:59.000Z

295

Gravity and magnetic anomalies and the deep structure of the Parnaiba cratonic basin, Brazil  

E-Print Network (OSTI)

Gravity and magnetic anomalies and the deep structure of the Parnaiba cratonic basin, Brazil A. B profile across the Parnaiba cratonic basin in NorthEast Brazil. The purpose of this project is to acquire margin of Parnaíba Basin, Brazil. Geophysics 64: 337-356. Ussami N, Cogo de Sa N, Molina EC. 1993

Watts, A. B. "Tony"

296

Seismo-geomagnetic anomalies and M P 5.0 earthquakes observed in Taiwan during 19882001  

E-Print Network (OSTI)

Seismo-geomagnetic anomalies and M P 5.0 earthquakes observed in Taiwan during 1988­2001 J.Y. Liu a, a relationship between M P 5.0 earthquakes and diurnal variations of the total geomagnetic field recorded the near-by geomagnetic field on the ground during the earthquake preparation period. The statistical

Chen, Yuh-Ing

297

Can North Atlantic Sea Ice Anomalies Account for Dansgaard–Oeschger Climate Signals?  

Science Conference Proceedings (OSTI)

North Atlantic sea ice anomalies are thought to play an important role in the abrupt Dansgaard–Oeschger (D–O) cycles of the last glacial period. This model study investigates the impacts of changes in North Atlantic sea ice extent in glacial ...

Camille Li; David S. Battisti; Cecilia M. Bitz

2010-10-01T23:59:59.000Z

298

Magnetic and gravity anomaly patterns related to hydrocarbon fields in northern West Siberia  

SciTech Connect

A study of the features of gravity and magnetic fields in the vicinity of oil and gas reservoirs in West Siberia demonstrated a spatial relationship with the hydrocarbon deposits. The relevant magnetic and gravity anomalies cover approximately 900,000 km{sup 2} in northern West Siberia. Amplitude and frequency were investigated initially using double Fourier spectrum (DFS) analysis. This was followed by (1) application of transformations, filtering, and moving windows analysis; (2) compilation of maps of regional and local anomalies, and potential field derivatives; and (3) investigation of the distribution of parameters in areas of known deposits. Hydrocarbon deposits are located mostly at the slopes of positive regional gravity and magnetic anomalies which are interpreted as relating to deep riftogenic structures. At the same time, it is established that the location of hydrocarbon depositions coincides commonly with local gravity and magnetic minima generated by lows in basement density and magnetization. All known hydrocarbon deposits in northern West Siberia are in areas characterized by comparatively high gradients of constituent of gravity anomalies with a wavelength of about 90--100 km. These newly revealed links between reservoirs and potential field parameters may be a means to predict new discoveries in poorly explored territories and seas, primarily in Russia`s Arctic shelf.

Piskarev, A.L.; Tchernyshev, M.Yu. [VNIIOkeangeologia, St. Petersburg (Russian Federation)

1997-05-01T23:59:59.000Z

299

Asymmetry of Atmospheric Circulation Anomalies over the Western North Pacific between El Niño and La Niña  

Science Conference Proceedings (OSTI)

The asymmetry of the western North Pacific (WNP) low-level atmospheric circulation anomalies between the El Niño and La Niña mature winter is examined. An anomalous WNP cyclone (WNPC) center during La Niña tends to shift westward relative to an ...

Bo Wu; Tim Li; Tianjun Zhou

2010-09-01T23:59:59.000Z

300

Relationships between Precipitation Anomalies in Uruguay and Southern Brazil and Sea Surface Temperature in the Pacific and Atlantic Oceans  

Science Conference Proceedings (OSTI)

This study focuses on precipitation in Uruguay and the Brazilian state of Rio Grande do Sul, which extend along the Atlantic coast of southern South America. The present paper has two principal goals: 1) to describe the annual cycle of ...

Alvaro F. Diaz; Caarem D. Studzinski; Carlos R. Mechoso

1998-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Multivariate Statistical Analysis of a Sea Surface Temperature Anomaly Experiment with the GISS General Circulation Model I  

Science Conference Proceedings (OSTI)

The multivariate statistical analysis of sensitivity experiments with atmospheric GCMs is difficult because the sample size is always much smaller than the dimensionality of the GCM fields. Thus, Hasselmann has suggested using a hypothesis ...

Gerhard Hannoschöck; Claude Frabkignoul

1985-07-01T23:59:59.000Z

302

Intraseasonal Atmospheric Variability in the Extratropics and Its Relation to the Onset of Tropical Pacific Sea Surface Temperature Anomalies  

Science Conference Proceedings (OSTI)

Previous research has shown that seasonal-mean boreal winter variations in the subtropical/extratropical sea level pressure and wind stress fields over the central North Pacific are significantly related to the state of the El Niño–Southern ...

Bruce T. Anderson

2007-03-01T23:59:59.000Z

303

Integrated exploration for low-temperature geothermal resources in the Honey Lake basin, California  

Science Conference Proceedings (OSTI)

An integrated exploration study is presented to locate low-temperature geothermal reservoirs in the Honey Lake area of northern California. Regional studies to locate the geothermal resources included gravity, infrared, water-temperature, and water-quality analyses. Five anomalies were mapped from resistivity surveys. Additional study of three anomalies by temperature-gradient and seismic methods was undertaken to define structure and potential of the geothermal resource. The gravity data show a graben structure in the area. Seismic reflection data, indicate faults associated with surface-resistivity and temperature-gradient data. The data support the interpretation that the shallow reservoirs are replenished along the fault zones by deeply circulating heated meteoric waters.

Schimschal, U. (U.S. Geological Survey, Denver, CO (US))

1991-02-01T23:59:59.000Z

304

Beamline Temperatures  

NLE Websites -- All DOE Office Websites (Extended Search)

Temperatures Temperatures Energy: 3.0000 GeV Current: 493.2242 mA Date: 11-Jan-2014 21:40:00 Beamline Temperatures Energy 3.0000 GeV Current 493.2 mA 11-Jan-2014 21:40:00 LN:MainTankLevel 124.4 in LN:MainTankPress 56.9 psi SPEAR-BL:B120HeFlow 15.4 l/min SPEAR-BL:B131HeFlow 22.2 l/min BL 4 BL02:LCW 0.0 ℃ BL02:M0_LCW 31.5 ℃ BL 4-1 BL04-1:BasePlate -14.0 ℃ BL04-1:Bottom1 46.0 ℃ BL04-1:Bottom2 47.0 ℃ BL04-1:Lower 32.0 ℃ BL04-1:Moly 46.0 ℃ BL04-1:ChinGuard1 31.0 ℃ BL04-1:ChinGuard2 31.0 ℃ BL04-1:FirstXtalA -167.0 ℃ BL04-1:FirstXtalB -172.0 ℃ BL04-1:Pad1 31.0 ℃ BL04-1:Pad2 31.0 ℃ BL04-1:SecondXtalA -177.0 ℃ BL04-1:SecondXtalB -175.0 ℃ BL 4-2 BL04-2:BasePlate -14.0 ℃ BL04-2:Bottom1 24.0 ℃ BL04-2:Bottom2 25.0 ℃

305

No one-loop gauge anomalies for a Lorentz-violating quantum electrodynamics: Evaluation of the three-photon vertex  

E-Print Network (OSTI)

Identification of the diagrams that can lead to gauge anomalies in the (minimal) Lorentz- and $CPT$-violating extension of quantum electrodynamics reveals these are the electron self-energy and vertex correction (related to the Ward-Takahashi identity), the photon self-energy (related to the vacuum polarization tensor transversality), and the three-photon vertex diagrams. All but the latter were explicitly verified to be free of anomalies to first order in loop expansion. Here we provide this remaining evaluation and verify the absence of anomalies in this process.

Daniel H. T. Franco; André H. Gomes

2013-08-22T23:59:59.000Z

306

The Pioneer anomaly: the measure of a topological phase defect of light in cosmology  

E-Print Network (OSTI)

It is shown that a wave vector representing a light pulse in an adiabatically evolving expanding space should develop, after a round trip (back and forth to the emitter) a geometric phase for helicity states at a given fixed position coordinate of this expanding space.In a section of the Hopf fibration of the Poincare sphere that identifies a projection to the physically allowed states, the evolution defines a parallel transported state that can be joined continuously with the initial state by means of the associated Berry-Pancharatnam connection. The connection allows to compute an anomaly in the frequency for the vector modes in terms of the scale factor of the space-time background being identical to the reported Pioneer Anomaly.

J. L. Rosales

2005-01-10T23:59:59.000Z

307

Non-universal, Non-anomalous U(1)' in a Model with Anomaly Mediated SUSY Breaking  

E-Print Network (OSTI)

We construct a Minimum Supersymmetry Standard Model expanded by a non-anomalous family (NAF) U(1)'_{NAF} gauge symmetry. All gauge anomalies are cancelled with no additional exotics other than the three right-handed neutrinos. The FI D-terms associated with the U(1)'_{NAF} symmetry lead to additional positive contributions to slepton squared masses. In a RG invariant way, this thus solves the tachyonic slepton mass problem in Anomaly Mediated Supersymmetry Breaking. In addition, the U(1)'_{NAF} symmetry naturally gives rise to the fermion mass hierarchy and mixing angles, and determines the mass spectrum of the sparticles. Our model also provides a counter example to the previous claim that the only U(1)' that can give rise to realistic fermion mass hierarchy and mixing pattern must be anomalous.

Mu-Chun Chen; Jinrui Huang

2010-11-29T23:59:59.000Z

308

Remote Energetic Neutral Atom Imaging of Electric Potential Over a Lunar Magnetic Anomaly  

E-Print Network (OSTI)

The formation of electric potential over lunar magnetized regions is essential for understanding fundamental lunar science, for understanding the lunar environment, and for planning human exploration on the Moon. A large positive electric potential was predicted and detected from single point measurements. Here, we demonstrate a remote imaging technique of electric potential mapping at the lunar surface, making use of a new concept involving hydrogen neutral atoms derived from solar wind. We apply the technique to a lunar magnetized region using an existing dataset of the neutral atom energy spectrometer SARA/CENA on Chandrayaan-1. Electrostatic potential larger than +135 V inside the Gerasimovic anomaly is confirmed. This structure is found spreading all over the magnetized region. The widely spread electric potential can influence the local plasma and dust environment near the magnetic anomaly.

Futaana, Y; Wieser, M; Lue, C; Wurz, P; Vorburger, A; Bhardwaj, A; Asamura, K; 10.1002/grl.50135

2013-01-01T23:59:59.000Z

309

Anomaly driven signatures of new invisible physics at the Large Hadron Collider  

E-Print Network (OSTI)

Many extensions of the Standard Model (SM) predict new neutral vector bosons at energies accessible by the Large Hadron Collider (LHC). We study an extension of the SM with new chiral fermions subject to non-trivial anomaly cancellations. If the new fermions have SM charges, but are too heavy to be created at LHC, and the SM fermions are not charged under the extra gauge field, one would expect that this new sector remains completely invisible at LHC. We show, however, that a non-trivial anomaly cancellation between the new heavy fermions may give rise to observable effects in the gauge boson sector that can be seen at the LHC and distinguished from backgrounds.

Ignatios Antoniadis; Alexey Boyarsky; Sam Espahbodi; Oleg Ruchayskiy; James D. Wells

2009-01-06T23:59:59.000Z

310

Yukawaon Model with Anomaly Free Set of Quarks and Leptons in a U(3) Family Symmetry  

E-Print Network (OSTI)

In the so-called "yukawaon" model, the (effective) Yukawa coupling constants $Y_f^{eff}$ are given by vacuum expectation values (VEVs) of scalars $Y_f$ (yukawaons) with $3\\times 3$ components. So far, yukawaons $Y_f$ have been assigned to ${\\bf 6}$ or ${\\bf 6}^*$ of U(3) family symmetry, so that quarks and leptons were not anomaly free in U(3). In this paper, yukawaons are assigned to ${\\bf 8}+{\\bf 1}$ of U(3), so that quarks and leptons are anomaly free. Since VEV relations among yukawaons are also considerably changed, parameter fitting of the model is renewed. After fixing our free parameters by observed mass ratios, we have only two and one remaining free parameters for quark and lepton mixings, respectively. We obtain successful predictions for the quark and lepton mixing parameters including magnitudes of $CP$ violation. The effective Majorana neutrino mass is also predicted.

Yoshio Koide; Hiroyuki Nishiura

2013-08-09T23:59:59.000Z

311

Fixing Data Anomalies with Prediction Based Algorithm in Wireless Sensor Networks  

E-Print Network (OSTI)

Data inconsistencies are present in the data collected over a large wireless sensor network (WSN), usually deployed for any kind of monitoring applications. Before passing this data to some WSN applications for decision making, it is necessary to ensure that the data received are clean and accurate. In this paper, we have used a statistical tool to examine the past data to fit in a highly sophisticated prediction model i.e., ARIMA for a given sensor node and with this, the model corrects the data using forecast value if any data anomaly exists there. Another scheme is also proposed for detecting data anomaly at sink among the aggregated data in the data are received from a particular sensor node. The effectiveness of our methods are validated by data collected over a real WSN application consisting of Crossbow IRIS Motes \\cite{Crossbow:2009}.

Singh, Abhishek Kr; Mandal, Partha Sarathi

2011-01-01T23:59:59.000Z

312

Thermal analysis of the Pioneer anomaly: A method to estimate radiative momentum transfer  

SciTech Connect

We present a methodology based on pointlike Lambertian sources that enables one to perform a reliable and comprehensive estimate of the overall thermally induced acceleration of the Pioneer 10 and 11 spacecraft. We show, by developing a sensitivity analysis of the several parameters of the model, that one may achieve a valuable insight into the possible thermal origin of the so-called Pioneer anomaly.

Bertolami, O.; Paramos, J. [Departamento de Fisica, Instituto Superior Tecnico, Avenida Rovisco Pais 1, 1049-001 Lisboa (Portugal); Francisco, F.; Gil, P. J. S. [Departamento de Engenharia Mecanica, Instituto Superior Tecnico, Avenida Rovisco Pais 1, 1049-001 Lisboa (Portugal)

2008-11-15T23:59:59.000Z

313

Experimental Verification of the Root Cause Mechanism for Axial Offset Anomaly  

Science Conference Proceedings (OSTI)

Researchers at the Georgia Institute of Technology built a test facility designed to experimentally verify the root cause mechanism for axial offset anomaly (AOA) in pressurized water reactors (PWRs). Tests consisted of depositing materials from the simulated PWR coolant on zircaloy-4 test elements, followed by rapid isolation from the boron-rich coolant to trap within the deposit layer any boron compounds having retrograde solubility. Although significant amounts of boron (up to 8 weight percent) were i...

2002-12-03T23:59:59.000Z

314

Evaluation of selected geochemical anomalies in Colorado and the Southeastern US. Final report  

SciTech Connect

This study demonstrates the utility of HSSR geochemical data from stream sediment in exploration for uranium. In the southeastern US, four uraniferous occurrences and associated radiometric anomalies were identified in areas where uranium mineralization has not been previously reported. At two localities, assays of about .01% have been obtained from saprolite. There is some evidence which suggests that uranium may have been leached at these localities and that higher grades of U are likely at depth.

Carpenter, R H

1980-08-01T23:59:59.000Z

315

The Euler anomaly and scale factors in Liouville/Toda CFTs  

E-Print Network (OSTI)

The role played by the Euler anomaly in the dictionary relating sphere partition functions of four dimensional theories of class $\\mathcal{S}$ and two dimensional nonrational CFTs is clarified. On the two dimensional side, this involves a careful treatment of scale factors in Liouville/Toda correlators. Using ideas from tinkertoy constructions for Gaiotto duality, a framework is proposed for evaluating these scale factors. The representation theory of Weyl groups plays a critical role in this framework.

Aswin Balasubramanian

2013-10-18T23:59:59.000Z

316

SER Temperature Coefficient  

SciTech Connect

Experimentally determine the overall isothermal temperature coefficient of the SER up to the design operating temperatures.

Johnson, J.L.

1959-12-31T23:59:59.000Z

317

Faults and gravity anomalies over the East Mesa hydrothermal-geothermal system  

DOE Green Energy (OSTI)

Detailed interpretations of gravity anomalies over geothermal systems may be extremely useful for mapping the fracture or fault systems that control the circulation of the thermal waters. This approach seems to be particularly applicable in areas like the Salton Trough where reactions between the thermal waters and the porous sediments produce authigenic-hydrothermal minerals in sufficient quantity to cause distinct gravity anomalies at the surface. A 3-D inversion of the residual Bouguer gravity anomaly over the East Mesa geothermal field was made to examine the densified volume of rock. We show that the data not only resolve a north-south and an intersecting northwest structure, but that it may be possible to distinguish between the active present-day hydrothermal system and an older and cooler part of the system. The densified region is compared spatially to self-potential, thermal and seismic results and we find a good concordance between the different geophysical data sets. Our results agree with previous studies that have indicated that the main feeder fault recharging the East Mesa reservoir dips steeply to the west.

Goldstein, N.E.; Carle, S.

1986-05-01T23:59:59.000Z

318

Semiclassical anomalies of the quantum mechanical systems and their modifications for the asymptotic matching  

SciTech Connect

JWKB solutions to the Initial Value Problems (IVPs) of the Time Independent Schrodinger's Equation (TISE) for the Simple Linear Potentials (SLPs) with a turning point parameter have been studied according to the turning points by graphical analysis to test the results of the JWKB solutions and suggested modifications. The anomalies happening in the classically inaccessible region where the SLP function is smaller than zero and the results of the suggested modifications, which are in consistent with the quantum mechanical theories, to remove these anomalies in this region have been presented. The origins of the anomalies and verifications of the suggested modifications showing a great success in the results have also been studied in terms of a suggested M{sub ij}=S{sup {approx}}{sub i-1,j} matrix elements made up of the JWKB expansion terms, S{sub i-1,j} (where i = 1, 2, 3 and j 1, 2). The results of the modifications for the IVPs and their application to the Bound State Problems (BSPs) with an example application of the Harmonic Oscillator (HO) have been presented and their generalization for any potential function have been discussed and classified accordingly.

Deniz, Coskun, E-mail: coskun.deniz@ege.edu.tr [Ege University, Faculty of Science, Department of Physics, Bornova 35100, Izmir (Turkey)

2011-08-15T23:59:59.000Z

319

Abundance anomalies in pre-main-sequence stars: Stellar evolution models with mass loss  

E-Print Network (OSTI)

The effects of atomic diffusion on internal and surface abundances of A and F pre-main-sequence stars with mass loss are studied in order to determine at what age the effects materialize, as well as to further understand the processes at play in HAeBe and young ApBp stars. Self-consistent stellar evolution models of 1.5 to 2.8Msun with atomic diffusion (including radiative accelerations) for all species within the OPAL opacity database were computed and compared to observations of HAeBe stars. Atomic diffusion in the presence of weak mass loss can explain the observed abundance anomalies of pre-main-sequence stars, as well as the presence of binary systems with metal rich primaries and chemically normal secondaries such as V380 Ori and HD72106. This is in contrast to turbulence models which do not allow for abundance anomalies to develop on the pre-main-sequence. The age at which anomalies can appear depends on stellar mass. For A and F stars, the effects of atomic diffusion can modify both the internal and s...

Vick, M; Richer, J; Richard, O

2010-01-01T23:59:59.000Z

320

Oxygen Reordering Near Room temperature in YBa2Cu3O6+x: A Thermodynamic Model  

SciTech Connect

We propose a thermodynamic model to explain an unusual phase transformation occurring near room temperature in YBa{sub 2}Cu{sub 3}O{sub 6+x} that greatly affects properties of the superconductor. Based on our model, the material's thermodynamic response functions, specific heat, thermal-expansion coefficient, and elastic compliances are deduced at the critical temperature of the phase transformation. We discuss the change of critical temperature with stress, and analyze the anomaly of specific heat in critical temperature of the phase transformation.

Meng, Q.; Welch, D.; Zhu, Y.

2011-04-14T23:59:59.000Z

Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Further Experiments on the Effect of Tropical Atlantic Heating Anomalies upon GCM Rain Forecasts over the Americas  

Science Conference Proceedings (OSTI)

A series of real-data experiments is performed with a general circulation model to study the sensitivity of extended range rain forecasts over the Americas to the structure and magnitude of tropical beating anomalies. The emphasis is upon heat ...

Julio Buchmann; Lawrence E. Buja; Jan Paegle; Robert E. Dickinson

1995-05-01T23:59:59.000Z

322

Correction of the High-Latitude Rain Day Anomaly in the NCEP–NCAR Reanalysis for Land Surface Hydrological Modeling  

Science Conference Proceedings (OSTI)

A spurious wavelike pattern in the monthly rain day statistics exists within the National Centers for Environmental Prediction–National Center for Atmospheric Research (NCEP–NCAR) reanalysis precipitation product. The anomaly, which is an ...

Justin Sheffield; Alan D. Ziegler; Eric F. Wood; Yangbo Chen

2004-10-01T23:59:59.000Z

323

Interannual Variability of Rhine River Streamflow and Its Relationship with Large-Scale Anomaly Patterns in Spring and Autumn  

Science Conference Proceedings (OSTI)

Interannual-to-decadal variability of Rhine River streamflow and their relationship with large-scale climate anomaly patterns for spring [March–May (MAM)] and autumn [September–November (SON)] are investigated through a statistical analysis of ...

Monica Ionita; Gerrit Lohmann; Norel Rimbu; Silvia Chelcea

2012-02-01T23:59:59.000Z

324

The Structure and Evolution of Seasonal Wind Anomalies over the Near-equatorial Eastern Indian and Western Pacific Oceans  

Science Conference Proceedings (OSTI)

The longitude–height–time evolution of seasonally averaged wind anomalies over the near-equatorial eastern Indian and western Pacific Oceans is examined, using multiyear time series derived from a network of eight rawinsonde stations. Data at six ...

David S. Gutzler; D. E. Harrison

1987-01-01T23:59:59.000Z

325

ENSO Warm (El Niño) and Cold (La Niña) Event Life Cycles: Ocean Surface Anomaly Patterns, Their Symmetries, Asymmetries, and Implications  

Science Conference Proceedings (OSTI)

Previous studies by the authors have described the composite global marine surface anomalies of ENSO warm (El Niño) events and cold (La Niña) events. Here the similarities and differences in these life cycles are examined. Qualitatively different ...

Narasimhan K. Larkin; D. E. Harrison

2002-05-01T23:59:59.000Z

326

The Precipitation Anomaly Classification: A Method for Monitoring Regional Precipitation Deficiency and Excess on a Global Scale  

Science Conference Proceedings (OSTI)

An objective method to identify and track significant global precipitation anomalies on time scales of a month or longer is presented. The technique requires current observations of monthly precipitation amounts for each station and long term (20 ...

J. E. Janowiak; C. F. Ropelewski; M. S. Halpert

1986-04-01T23:59:59.000Z

327

A Diagnostic Study of Recurrent Meteorological Anomalies Appearing in a 15-Year Simulation with a GFDL General Circulation Model  

Science Conference Proceedings (OSTI)

The spatial structure and temporal characteristics of prominent anomalies occurring in a 15-year simulation with a GFDL spectral general circulation model are examined using empirical orthogonal functions, teleconnection patterns, composite ...

Ngar-Cheung Lau

1981-11-01T23:59:59.000Z

328

A GCM Simulation Study of the Influence of Saharan Evapotranspiration and Surface-Albedo Anomalies on July Circulation and Rainfall  

Science Conference Proceedings (OSTI)

The GLA (Goddard Laboratory for Atmospheres) GCM (general circulation model) was employed to investigate the influence of surface albedo and evapotranspiration anomalies that could result from the hypothetical semiarid vegetation over North ...

Y. C. Sud; A. Molod

1988-11-01T23:59:59.000Z

329

The Anomalous Rainfall over the United States during July 1993: Sensitivity to Land Surface Parameterization and Soil Moisture Anomalies  

Science Conference Proceedings (OSTI)

This paper discusses the sensitivity of short- and medium-range precipitation forecasts for the central United States to land surface parametrization and soil moisture anomalies. Two forecast systems with different land surface and boundary layer ...

Anton C. M. Beljaars; Pedro Viterbo; Martin J. Miller; Alan K. Betts

1996-03-01T23:59:59.000Z

330

Anomalies in the Young modulus at structural phase transitions in rare-earth cobaltites RBaCo{sub 4}O{sub 7} (R = Y, Tm-Lu)  

SciTech Connect

The elastic properties of rare-earth cobaltites RBaCo{sub 4}O{sub 7} (R = Y, Tm-Lu) have been experimentally studied in the temperature range of 80-300 K. The strong softening of the Young modulus {Delta}E(T)/E{sub 0} Almost-Equal-To -(0.1-0.2) of cobaltites with Lu and Yb ions has been revealed, which is due to the instability of the crystal structure upon cooling and is accompanied by an inverse jump at the second-order structural phase transition. The softening of the Young modulus and the jump at the phase transition decrease by an order of magnitude and the transition temperature T{sub s} and hysteresis {Delta}T{sub s} increase from a compound with Lu to that with Tm. A large softening of the Young modulus at the structural transition in Lu- and Yb cobaltites indicates that the corresponding elastic constant goes to zero, whereas this constant in Tm cobaltite is not a 'soft' mode of the phase transition. It has been found that the structural phase transition in Lu- and Yb cobaltites is accompanied by a large absorption maximum at the phase transition point and an additional maximum in the low-temperature phase and absorption anomalies in Tm cobaltite is an order of magnitude smaller.

Kazei, Z. A., E-mail: kazei@plms.phys.msu.ru; Snegirev, V. V.; Andreenko, A. S. [Moscow State University (Russian Federation); Kozeeva, L. P. [Russian Academy of Sciences, Nikolaev Institute of Inorganic Chemistry, Siberian Branch (Russian Federation)

2011-08-15T23:59:59.000Z

331

CDIAC Temperature Data Sets  

NLE Websites -- All DOE Office Websites (Extended Search)

Temperature CDIAC Climate Holdings Containing Temperature Data Global Data Sets Data Set Name Investigators Data TypeFormat Period of Record NASA GISS Surface Temperature...

332

High Temperatures & Electricity Demand  

E-Print Network (OSTI)

High Temperatures & Electricity Demand An Assessment of Supply Adequacy in California Trends.......................................................................................................1 HIGH TEMPERATURES AND ELECTRICITY DEMAND.....................................................................................................................7 SECTION I: HIGH TEMPERATURES AND ELECTRICITY DEMAND ..........................9 BACKGROUND

333

Neutrino mixings and grand unification: SU(5) GUT with anomaly free U(1){sub F}  

Science Conference Proceedings (OSTI)

The model of supersymmetric SU(5) GUT augmented with anomaly free U(1){sub F} flavor symmetry is presented. The field content and the U(1){sub F} charge assignment is obtained by specific embedding of SU(5) Multiplication-Sign U(1){sub F} in larger non-Abelian group. We focus on a particular case which gives very economical field content with the U(1){sub F} charges fixed in such a way that for quarks and leptons appealing texture zero Yukawa couplings are generated. The model gives realistic fermion masses and mixings and predict inverted hierarchical neutrino mass scenario with interesting implications.

Tavartkiladze, Zurab [Center for Elementary Particle Physics, ITP, Ilia State University, 0162 Tbilisi (Georgia)

2013-05-23T23:59:59.000Z

334

Liquid polymorphism and density anomaly in a three-dimensional associating lattice gas  

E-Print Network (OSTI)

We investigate the phase diagram of a three-dimensional associating gas $(ALG)$ model. This model combines orientational ice-like interactions and ``van der Waals'' that might be repulsive, representing, in this case, a penalty for distortion of hydrogen bonds. These interactions can be interpreted as two competing distances making the connection between this model and continuous isotropic soft-core potentials. We present Monte Carlo studies of the $ALG$ model showing the presence of two liquid phase, two critical points and A density anomaly.

Mauricio Girardi; Aline L. Balladares; Vera B. Henriques; Marcia C. Barbosa

2006-12-09T23:59:59.000Z

335

Trace anomaly and Hawking effect in generic 2D dilaton gravity theories  

E-Print Network (OSTI)

Black hole solutions in the context of a generic matter-coupled two-dimensional dilaton gravity theory are discussed both at the classical and semiclassical level. Starting from general assumptions, a criterion for the existence of black holes is given. The relationship between conformal anomaly and Hawking radiation is extended to a broad class of two-dimensional dilaton gravity models. A general and simple formula relating the magnitude of the Hawking effect to the dilaton potential evaluated on the horizon is derived.

Mariano Cadoni

1995-10-09T23:59:59.000Z

336

Anomaly-free perturbations with inverse-volume and holonomy corrections in Loop Quantum Cosmology  

E-Print Network (OSTI)

This article addresses the issue of the closure of the algebra of constraints for generic (cosmological) perturbations when taking into account simultaneously the two main corrections of effective loop quantum cosmology, namely the holonomy and the inverse-volume terms. Previous works on either the holonomy or the inverse volume case are reviewed and generalized. In the inverse-volume case, we point out new possibilities. An anomaly-free solution including both corrections is found for perturbations, and the corresponding equations of motion are derived.

Thomas Cailleteau; Linda Linsefors; Aurelien Barrau

2013-07-19T23:59:59.000Z

337

Variability in daily, zonal mean lower-stratospheric temperatures  

Science Conference Proceedings (OSTI)

Satellite data from the microwave sounding unit (MSU) channel 4, when carefully merged, provide daily zonal anomalies of lower-stratosphere temperature with a level of precision between 0.01[degrees] and 0.08[degrees]C per 2.5[degrees] latitude band. Global averages of these daily zonal anomalies reveal the prominent warming events due to volcanic aerosol in 1982 (El Chichon) and 1991 (Mt. Pinatubo), which are on the order of 1[degrees]C. The quasibiennel oscillation (QBO) may be extracted from these zonal data by applying a spatial filter between 15[degrees]N and 15[degrees]S latitude, which resembles the meridional curvature. Previously published relationships between the QBO and the north polar stratospheric temperatures during northern winter are examined but were not found to be reproduced in the MSU4 data. Sudden stratospheric warmings in the north polar region are represented in the MSU4 data for latitudes poleward of 70[degrees]N. In the Southern Hemisphere, there appears to be a moderate relationship between total ozone concentration and MSU4 temperatures, though it has been less apparent in 1991 and 1992. In terms of empirical modes of variability revealed significant power in the 15-20 day period band.

Christy, J.R. (Univ. of Alabama, Huntsville, AL (United States)); Drouilhet, S.J. Jr. (Moorhead State Univ., MN (United States))

1994-01-01T23:59:59.000Z

338

Semi-Supervised Anomaly Detection - Towards Model-Independent Searches of New Physics  

E-Print Network (OSTI)

Most classification algorithms used in high energy physics fall under the category of supervised machine learning. Such methods require a training set containing both signal and background events and are prone to classification errors should this training data be systematically inaccurate for example due to the assumed MC model. To complement such model-dependent searches, we propose an algorithm based on semi-supervised anomaly detection techniques, which does not require a MC training sample for the signal data. We first model the background using a multivariate Gaussian mixture model. We then search for deviations from this model by fitting to the observations a mixture of the background model and a number of additional Gaussians. This allows us to perform pattern recognition of any anomalous excess over the background. We show by a comparison to neural network classifiers that such an approach is a lot more robust against misspecification of the signal MC than supervised classification. In cases where there is an unexpected signal, a neural network might fail to correctly identify it, while anomaly detection does not suffer from such a limitation. On the other hand, when there are no systematic errors in the training data, both methods perform comparably.

Mikael Kuusela; Tommi Vatanen; Eric Malmi; Tapani Raiko; Timo Aaltonen; Yoshikazu Nagai

2011-12-14T23:59:59.000Z

339

Lifting Slepton Masses with a Non-universal, Non-anomalous U(1)'_{NAF} in Anomaly Mediated SUSY breaking  

E-Print Network (OSTI)

We extend the Minimum Supersymmetry Standard Model by a non-anomalous family (NAF) U(1)'_{NAF} gauge symmetry. All gauge anomalies are cancelled with no additional exotics other than the three right-handed neutrinos. The FI D-terms associated with the U(1)'_{NAF} symmetry lead to additional positive contributions to slepton squared masses. In a RG invariant way, this thus solves the tachyonic slepton mass problem in Anomaly Mediated Supersymmetry Breaking. In addition, the U (1)'_{NAF} symmetry naturally gives rise to the fermion mass hierarchy and mixing angles, and determines the mass spectrum of the sparticles.

Mu-Chun Chen; Jinrui Huang

2010-11-01T23:59:59.000Z

340

Energy-momentum uncertainties as possible origin of threshold anomalies in UHECR and TeV-gamma ray events  

E-Print Network (OSTI)

A threshold anomaly refers to a theoretically expected energy threshold that is not observed experimentally. Here we offer an explanation of the threshold anomalies encountered in the ultra-high energy cosmic ray events and the TeV-gamma ray events, by arguing that energy-momentum uncertainties due to quantum gravity, too small to be detected in low-energy regime, can affect particle kinematics so as to raise or even eliminate the energy thresholds. A possible modification of the energy-momentum dispersion relation, giving rise to time-of-flight differences between photons of different energies from gamma ray bursts, is also discussed.

Y. Jack Ng; D. -S. Lee; M. C. Oh; H. van Dam

2000-10-15T23:59:59.000Z

Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Constraining Anomaly Mediated Supersymmetry Breaking Framework via Ongoing Muon g-2 Experiment at Brookhaven  

E-Print Network (OSTI)

The ongoing high precision E821 Brookhaven National Laboratory experiment on muon g-2 is promising to probe a theory involving supersymmetry. We have studied the constraints on the minimal Anomaly Mediated Supersymmetry Breaking (AMSB) model using the current data of muon g-2 from Brookhaven. A scenario of seeing no deviation from the Standard Model is also considered, within a $2\\sigma$ limit of the combined error from the Standard Model result and the Brookhaven predicted uncertainty level. The resulting constraint is found to be complementary to what one obtains from $b \\to s+ \\gamma$ bounds within the AMSB scenario, since only a definite sign of $\\mu$ is effectively probed via $b \\to s+ \\gamma$. A few relevant generic features of the model are also described for disallowed regions of parameter space.

Utpal Chattopadhyay; Dilip Kumar Ghosh; Sourov Roy

2000-06-05T23:59:59.000Z

342

Fuzzy Logic Based Anomaly Detection for Embedded Network Security Cyber Sensor  

Science Conference Proceedings (OSTI)

Resiliency and security in critical infrastructure control systems in the modern world of cyber terrorism constitute a relevant concern. Developing a network security system specifically tailored to the requirements of such critical assets is of a primary importance. This paper proposes a novel learning algorithm for anomaly based network security cyber sensor together with its hardware implementation. The presented learning algorithm constructs a fuzzy logic rule based model of normal network behavior. Individual fuzzy rules are extracted directly from the stream of incoming packets using an online clustering algorithm. This learning algorithm was specifically developed to comply with the constrained computational requirements of low-cost embedded network security cyber sensors. The performance of the system was evaluated on a set of network data recorded from an experimental test-bed mimicking the environment of a critical infrastructure control system.

Ondrej Linda; Todd Vollmer; Jason Wright; Milos Manic

2011-04-01T23:59:59.000Z

343

Semi-Supervised Anomaly Detection - Towards Model-Independent Searches of New Physics  

E-Print Network (OSTI)

Most classification algorithms used in high energy physics fall under the category of supervised machine learning. Such methods require a training set containing both signal and background events and are prone to classification errors should this training data be systematically inaccurate for example due to the assumed MC model. To complement such model-dependent searches, we propose an algorithm based on semi-supervised anomaly detection techniques, which does not require a MC training sample for the signal data. We first model the background using a multivariate Gaussian mixture model. We then search for deviations from this model by fitting to the observations a mixture of the background model and a number of additional Gaussians. This allows us to perform pattern recognition of any anomalous excess over the background. We show by a comparison to neural network classifiers that such an approach is a lot more robust against misspecification of the signal MC than supervised classification. In cases where the...

Kuusela, Mikael; Malmi, Eric; Raiko, Tapani; Aaltonen, Timo; Nagai, Yoshikazu

2011-01-01T23:59:59.000Z

344

Z' Bosons, the NuTeV Anomaly, and the Higgs Boson Mass  

SciTech Connect

Fits to the precision electroweak data that include the NuTeV measurement are considered in family universal, anomaly free U(1) extensions of the Standard Model. In data sets from which the hadronic asymmetries are excluded, some of the Z{prime} models can double the predicted value of the Higgs boson mass, from {approx} 60 to {approx} 120 GeV, removing the tension with the LEP II lower bound, while also modestly improving the {chi}{sup 2} confidence level. The effect of the Z{prime} models on both m{sub H} and the {chi}{sup 2} confidence level is increased when the NuTeV measurement is included in the fit. Both the original NuTeV data and a revised estimate by the PDG are considered.

Chanowitz, Michael S

2009-03-03T23:59:59.000Z

345

LA-UR-07-7264 New Horizons and the Onset of the Pioneer Anomaly  

E-Print Network (OSTI)

Analysis of the radio tracking data from the Pioneer 10/11 spacecraft at distances between about 20- 70 AU from the Sun has indicated the presence of an unmodeled, small, constant, Doppler blue shift which can be interpreted as a constant acceleration of aP = (8.74 ± 1.33) × 10 ?8 cm/s 2 directed approximately towards the Sun. In addition, there is early (roughly modeled) data from as close in as 5 AU which indicates there may have been an onset of the anomaly near Saturn. We observe that the data now arriving from the New Horizons mission to Pluto and the Kuiper Belt could allow a relatively easy, direct experimental test of whether this onset is associated with distance from the Sun (being, for example, an effect of drag on dark matter). We strongly urge that this test be done.

Michael Martin Nieto

2008-01-01T23:59:59.000Z

346

Active current sheets and hot flow anomalies in Mercury's bow shock  

E-Print Network (OSTI)

Hot flow anomalies (HFAs) represent a subset of solar wind discontinuities interacting with collisionless bow shocks. They are typically formed when the normal component of motional (convective) electric field points toward the embedded current sheet on at least one of its sides. The core region of an HFA contains hot and highly deflected ion flows and rather low and turbulent magnetic field. In this paper, we report first observations of HFA-like events at Mercury identified over a course of two planetary years. Using data from the orbital phase of the MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) mission, we identify a representative ensemble of active current sheets magnetically connected to Mercury's bow shock. We show that some of these events exhibit unambiguous magnetic and particle signatures of HFAs similar to those observed earlier at other planets, and present their key physical characteristics. Our analysis suggests that Mercury's bow shock does not only mediate the flo...

Uritsky, V M; Boardsen, S A; Sundberg, T; Raines, J M; Gershman, D J; Collinson, G; Sibeck, D; Khazanov, G V; Anderson, B J; Korth, H

2013-01-01T23:59:59.000Z

347

A Comparison of Month-to-Month Persistence of Anomalies in a General Circulation Model and in the Earth's Atmosphere  

Science Conference Proceedings (OSTI)

The output of a 20-year integration of an annual cycle (AC) version of the NCAR Community Climate Model in which the external conditions went through 20 prescribed identical annual cycles is used to study mouth-to-month persistence of anomalies ...

Huug M. Van Den Dool; Robert M. Chervin

1986-07-01T23:59:59.000Z

348

Decadal variability in snow depth anomaly over Eurasia and its association with all India summer monsoon rainfall and seasonal circulations  

E-Print Network (OSTI)

The Historical Soviet Daily Snow Depth (HSDSD) version II data set has been used in the computation of winter and spring snow depth anomalies over west (25 deg. E to 70 deg. E, 35 deg. N to 65 deg. N) and east (70 deg. E to 160 deg. E, 35 deg. N to 65 deg. N) Eurasia. It is noticed that winter snow depth anomaly over east Eurasia is positively correlated while west Eurasia is negatively correlated with subsequent Indian summer monsoon rainfall (ISMR). The DJF snow depth anomaly shows highest and inverse correlation coefficient (CC) with ISMR over a large area of west Eurasia in a recent period of study i.e. 1975-1995. On the basis of standardised winter (mean of December, January and February) snow depth anomaly over west Eurasia, the years 1966, 1968, 1979 and 1986 are identified as high snow years and the years 1961 and 1975 as low snow years. The characteristics of seasonal monsoon circulation features have been studied in detail during contrasting years of less (more) snow depth in winter/spring seasons f...

Singh, G P

2003-01-01T23:59:59.000Z

349

Long-Term Trend and Decadal Variability of Persistence of Daily 500-mb Geopotential Height Anomalies during Boreal Winter  

Science Conference Proceedings (OSTI)

An analysis has been made of the trend and decadal variability of persistence of daily 500-mb (hPa) geopotential height anomalies for the winter season. The persistence is measured based on autocorrelations at 1- and 5-day lags (denoted r1 and r5,...

Ruiqiang Ding; Jianping Li

2009-10-01T23:59:59.000Z

350

Simulation of the flyby anomaly by means of an empirical asymmetric gravitational field with definite spatial orientation  

E-Print Network (OSTI)

All anomalous velocity increases until now observed during the Earth flybys of the spacecrafts Galileo, NEAR, Rosetta, Cassini and Messenger have been correctly calculated by computer simulation using an asymmetric field term in addition to the Newtonian gravitational field. The specific characteristic of this term is the lack of coupling to the rotation of the Earth or to the direction of other gravitational sources such as the Sun or Moon. Instead, the asymmetry is oriented in the direction of the Earth's motion within an assumed unique reference frame. With this assumption, the simulation results of the Earth flybys Galileo1, NEAR, Rosetta1 and Cassini hit the observed nominal values, while for the flybys Galileo2 and Messenger, which for different reasons are measured with uncertain anomaly values, the simulated anomalies are within plausible ranges. Furthermore, the shape of the simulated anomaly curve is in qualitative agreement with the measured Doppler residuals immediately following the perigee of the first Earth flyby of Galileo. Based on the simulation, an estimation is made for possible anomalies of the recently carried out flybys of Rosetta at Mars on 25.02.07 and at the Earth on 13.11.07, and for the forthcoming Earth flyby on 13.11.09. It is discussed, why a so modelled gravitational field has not been discovered until now by analysis of the orbits of Earth satellites, and what consequences are to be considered with respect to General Relativity.

Hans-Juergen Busack

2007-11-18T23:59:59.000Z

351

Detection of a thin sheet magnetic anomaly by squid-gradiometer systems: possibility of hydrofracture azimuth determination  

DOE Green Energy (OSTI)

A study of the signal physics of magnetic anomaly detection was carried out by superconducting gradiometer and magnetometer loop systems with SQUID sensors for possible application to the LASL geothermal energy program. In particular, the crack produced by hydrofracture of a deep HDR geothermal borehole would be filled with a magnetic material such as ferrofluid. When polarized by the earth's field, this material would produce a localized crack magnetic anomaly which is characteristic of the azimuth of the vertical crack with respect to magnetic north. Signatures of the anomaly would be determined by taking rotation data before and after filling the crack with magnetic material. A mathematical description was found for these signatures. To test the theory and the feasibility of the idea, the deep borehole vertical cracks were simulated by using panels to define sheets 1.5 mm thick, 1.2 m wide, and 2.5 m high. When filled with ferrofluid of suitable magnetic permeability, the local anomaly develops. Signatures were measured with a horizontal axial gradiometer rotated about a vertical axis. Good agreement was found between theory and experiment for aximuths in the east and west quadrants but only fair agreement in the north and south quadrants.

Overton, W.C. Jr.

1978-12-01T23:59:59.000Z

352

Muon g - 2 anomaly and 125 GeV Higgs: Extra vector-like quark and LHC prospects  

Science Conference Proceedings (OSTI)

The ATLAS and CMS collaborations recently reported indication of a Higgs boson around 125GeV. If we add extra vector-like quarks to the MSSM, such a relatively heavy Higgs can be naturally realized in the GMSB framework, simultaneously explaining the muon g - 2 anomaly. I will discuss LHC prospect of this attractive model.

Iwamoto, Sho [Department of Physics, University of Tokyo, Tokyo 113-0033 (Japan)

2012-07-27T23:59:59.000Z

353

A Model Study of the Role of High-Latitude Topography in the Climatic Response to Orbital Insolation Anomalies  

Science Conference Proceedings (OSTI)

The response of a combined global zonal-averaged energy balance model and a continental ice-sheet model to insulation anomalies produced by orbital perturbations is examined. Although the role of ice sheet dynamics is included in the model, this ...

G. E. Birchfield; Johannes Weertman; Albert T. Lunde

1982-01-01T23:59:59.000Z

354

Global Interannual Trends and Amplitude Modulations of the Sea Surface Height Anomaly from the TOPEX/Jason-1 Altimeters  

Science Conference Proceedings (OSTI)

This study uses the global Ocean Topography Experiment (TOPEX)/Jason-1 altimeters’ time series to estimate the 13-yr trend in sea surface height anomaly. These trends are estimated at each grid point by two methods: one fits a straight line to ...

Paulo S. Polito; Olga T. Sato

2008-06-01T23:59:59.000Z

355

Cooled, temperature controlled electrometer  

DOE Patents (OSTI)

A cooled, temperature controlled electrometer for the measurement of small currents. The device employs a thermal transfer system to remove heat from the electrometer circuit and its environment and dissipate it to the external environment by means of a heat sink. The operation of the thermal transfer system is governed by a temperature regulation circuit which activates the thermal transfer system when the temperature of the electrometer circuit and its environment exceeds a level previously inputted to the external variable temperature control circuit. The variable temperature control circuit functions as subpart of the temperature control circuit. To provide temperature stability and uniformity, the electrometer circuit is enclosed by an insulated housing.

Morgan, John P. (Idaho Falls, ID)

1992-01-01T23:59:59.000Z

356

High temperature furnace  

DOE Patents (OSTI)

A high temperature furnace for use above 2000.degree.C is provided that features fast initial heating and low power consumption at the operating temperature. The cathode is initially heated by joule heating followed by electron emission heating at the operating temperature. The cathode is designed for routine large temperature excursions without being subjected to high thermal stresses. A further characteristic of the device is the elimination of any ceramic components from the high temperature zone of the furnace.

Borkowski, Casimer J. (Oak Ridge, TN)

1976-08-03T23:59:59.000Z

357

Airborne and field-temperature surveys compared at Long Valley KGRA, California  

DOE Green Energy (OSTI)

An airborne predawn radiometric temperature survey was flown over the Long Valley KGRA. Radiometric temperatures were recorded at 10 to 12 ..mu..m and 4.5 to 5.5 ..mu..m. They were corrected to obtain true land-surface temperatures in agreement with field data. After accounting for thermal effects from surface features, there remained a thermal anomaly. The anomalous zone encompassed 2 km/sup 2/. It was a dry land area with a predawn surface temperature which averaged 1.4 +- 0.3/sup 0/C warmer than ambient. This area coincided with a thermal discharge zone where deep temperature gradients were 5 to 30 times normal. The predawn radiometric survey clarified and supplemented conclusions drawn from 6 to 30m deep field surveys. Heat from hydrothermal discharge was stored in a shallow aquifer and conducted to the surface.

Del Grande, N.K.

1981-06-01T23:59:59.000Z

358

Dielectric properties of PbNb{sub 2}O{sub 6} ferroelectric ceramics at cryogenic temperatures  

Science Conference Proceedings (OSTI)

Complex dielectric permittivity measurements in PbNb{sub 2}O{sub 6} ceramics were performed in a frequency and temperature range of 1 kHz-1 MHz and from 15 to 900 K, respectively. The results revealed two dielectric anomalies showing typical characteristics of relaxor ferroelectric materials at cryogenic temperatures. Comparison with other tetragonal tungsten bronze (TTB) structure-type materials suggests the existence of successive phase transitions, which until now were not reported. The observed low temperature dielectric behaviors seem to be due to intrinsic physical characteristics related to the TTB structure.

Guerra, J. de los S; Venet, M.; Garcia, D.; Eiras, J. A.; Guerrero, F. [Grupo de Ceramicas Ferroeletricas, Departamento de Fisica, Universidade Federal de Sao Carlos, CEP 13565-905, Sao Carlos, Sao Paulo 15385000 (Brazil); Facultad de Ciencias Naturales, Departamento de Fisica, Universidad de Oriente, C.P. 90500 Santiago de Cuba (Cuba)

2007-08-06T23:59:59.000Z

359

Enzymatic temperature change indicator  

DOE Patents (OSTI)

A temperature change indicator is described which is composed of an enzyme and a substrate for that enzyme suspended in a solid organic solvent or mixture of solvents as a support medium. The organic solvent or solvents are chosen so as to melt at a specific temperature or in a specific temperature range. When the temperature of the indicator is elevated above the chosen, or critical temperature, the solid organic solvent support will melt, and the enzymatic reaction will occur, producing a visually detectable product which is stable to further temperature variation.

Klibanov, Alexander M. (Newton, MA); Dordick, Jonathan S. (Iowa City, IA)

1989-01-21T23:59:59.000Z

360

NASA's satellite orbit anomaly problem can be solved precisely in the frame of Einstein's special theory of relativity. Anomaly confirms that gravity fields propagate with velocity of light as Einstein predicted  

E-Print Network (OSTI)

NASA's Jet Propulsion Laboratory put on You Tube a problem that has been baffling the scientists for sometime. It involves an unexpected force acting on the space probes. The author proves that NASA'S satellite orbit anomaly problem can be solved in the frame of Einstein's Special Theory of Relativity. The anomaly confirms that gravity fields propagate with velocity of light as Einstein predicted. The proof is based on the authors discovery of the relativistic version of Newton's gravity field. The author provides formulas for relativistic equation of motion for a spacecraft in the joint gravitational field of the Earth and the Sun in a Lorentzian frame attached to the Earth. The formulas are suitable for digital computers and can be easily implemented. He also shows how to find solutions of the relativistic equations of motion for the spacecraft.

Victor M. Bogdan

2009-10-17T23:59:59.000Z

Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Yeast and Temperature  

NLE Websites -- All DOE Office Websites (Extended Search)

Yeast and Temperature Yeast and Temperature Name: Alyssaaum Location: N/A Country: N/A Date: N/A Question: How does temperature affect yeast? Replies: Dear Alyssa, At low temperatures (0-10 C) yeast will not grow, but not die either. At temperatures 10-37 C yeast will grow and multiply, faster at higher temperatures with an optimal growth at 30 or 37 C (that depends on the species). At higher temperature the cells become stressed, meaning that their content becomes damaged and which can be repaired to some degree. At high temperatures (>50 C) the cells die. The bacteria can survive freezing under certain conditions. When baking bread all yeast dies during the process. Dr. Trudy Wassenaar yeast is a unique type of fungi that grows quickly by rapid cell division. It grows best at about 100 degrees fahrenheit, colder will cause it to go dormant, much warmer could kill it

362

Fish and Temperature  

NLE Websites -- All DOE Office Websites (Extended Search)

Fish and Temperature Name: Christopher Location: NA Country: NA Date: NA Question: Dear Sirs, I am doing a project on a sand tiger shark and i was wondering if temperature...

363

Climatic Temperature Normals  

Science Conference Proceedings (OSTI)

The published 1951–80 daily normals of maximum and minimum temperatures were prepared by interpolating between average monthly values. This study compares the published normal and 30-yr average daily temperatures in the eastern half of the United ...

Nathaniel B. Guttman; Marc S. Plantico

1987-10-01T23:59:59.000Z

364

Hygrometry with Temperature Stabilization  

Science Conference Proceedings (OSTI)

A method is presented for stabilizing the temperature of air to allow the use of temperature-sensitive, humidity sensors for direct determination of an invariant humidity characteristic such as specific humidity and/or its fluctuations. Problems ...

Krzysztof E. Haman; Andrzej M. Makulski

1985-12-01T23:59:59.000Z

365

Interpretation of a Short-Term Anomaly in the Gravitational Microlensing Event MOA-2012-BLG-486  

E-Print Network (OSTI)

A planetary microlensing signal is generally characterized by a short-term perturbation to the standard single lensing light curve. A subset of binary-source events can produce perturbations that mimic planetary signals, thereby introducing an ambiguity between the planetary and binary-source interpretations. In this paper, we present analysis of the microlensing event MOA-2012-BLG-486, for which the light curve exhibits a short-lived perturbation. Routine modeling not considering data taken in different passbands yields a best-fit planetary model that is slightly preferred over the best-fit binary-source model. However, when allowed for a change in the color during the perturbation, we find that the binary-source model yields a significantly better fit and thus the degeneracy is clearly resolved. This event not only signifies the importance of considering various interpretations of short-term anomalies, but also demonstrates the importance of multi-band data for checking the possibility of false-positive pla...

Hwang, K -H; Bond, I A; Sumi, T; Han, C; Gaudi, B S; Gould, A; Bozza, V; Beaulieu, J -P; Tsapras, Y; Abe, F; Bennett, D P; Botzler, C S; Chote, P; Freeman, M; Fukui, A; Fukunaga, D; Harris, P; Itow, Y; Koshimoto, N; Ling, C H; Masuda, K; Matsubara, Y; Muraki, Y; Namba, S; Ohnishi, K; Rattenbury, N J; Saito, To; Sullivan, D J; Sweatman, W L; Suzuki, D; Tristram, P J; Wada, K; Yamai, N; Yock, P C M; Yonehara, A; de Almeida, L Andrade; DePoy, D L; Dong, Subo; Jablonski, F; Jung, Y K; Kavka, A; Lee, C -U; Park, H; Pogge, R W; Shin, I -G; Yee, J C; Albrow, M D; Bachelet, E; Batista, V; Brillant, S; Caldwell, J A R; Cassan, A; Cole, A; Corrales, E; Coutures, Ch; Dieters, S; Prester, D Dominis; Donatowicz, J; Fouqué, P; Greenhill, J; Jørgensen, U G; Kane, S R; Kubas, D; Marquette, J -B; Martin, R; Meintjes, P; Menzies, J; Pollard, K R; Williams, A; Wouters, D; Bramich, D M; Dominik, M; Horne, K; Browne, P; Hundertmark, M; Ipatov, S; Kains, N; Snodgrass, C; Steele, I A; Street, R A

2013-01-01T23:59:59.000Z

366

Predictability experiments for the Asian summer monsoon impact of SST anomalies on interannual and intraseasonal variability  

E-Print Network (OSTI)

The effects of SST anomalies on the interannual and intraseasonal variability of the Asian summer monsoon have been studied by multivariate statistical analyses of 850-hPa wind and rainfall fields simulated in a set of ensemble integrations of the ECMWF atmospheric GCM, referred to as the PRISM experiments. The simulations used observed SSTs (PRISM-O), covering 9 years characterised by large variations of the ENSO phenomenon in the 1980's and the early 1990's. A parallel set of simulations was also performed with climatological SSTs (PRISM-C), thus enabling the influence of SST forcing on the modes of interannual and intraseasonal variability to be investigated. As in observations, the model's interannual variability is dominated by a zonally-oriented mode which describes the north-south movement of the tropical convergence zone (TCZ). This mode appears to be independent of SST forcing and its robustness between the PRISM-O and PRISM-C simulations suggests that it is driven by internal atmospheric dynamics. O...

Molteni, F; Ferranti, L; Slingo, J M

2003-01-01T23:59:59.000Z

367

40 TRIPLE SEX CHROMATIN, AND OTHER SEX CHROMATIN ANOMALIES, IN TUMOURS OF FEMALES  

E-Print Network (OSTI)

IN a previous study on sex chromatin in human tumours (Atkin, 1960), one tumour (a carcinoma of the colon in a female patient) was described in which the most frequently-occurring number of sex chromatin bodies per nucleus was three. One of a series of 328 carcinomas of the cervix in a later study (Atkin, 1964) was also characterised by the presence of triple sex chromatin. In the present paper, two further tumours with triple sex chromatin, a carcinoma of the colon and a carcinoma of the cervix, will be described, and sex chromatin data on all malignant tumours, except teratomas, studied in this laboratory will be summarised. The significance of triple sex chromatin and other sex chromatin anomalies (i.e. absence or duplication) in tumours of females will be discussed. MATERIALS AND METHODS For sex chromatin determination squash preparations of pieces of tumour, stained in 2 % aceto-orcein (G. T. Gurr Ltd.) following fixation in acetic alcohol, were used. The preparations were sealed with a mixture of equal parts of Canada balsam and paraffin wax applied with a hot wire (attempts to make the preparations

N. B. Atkin

1966-01-01T23:59:59.000Z

368

On the specifics of the electrical conductivity anomalies in PVC nanocomposites  

E-Print Network (OSTI)

A qualitative model describing the "anomalous" features of the conductivity of polymer nanocomposites, in particular, switching to the conducting state in relatively thick (tens of microns or more) of flexible PVC films is considered. In previously published experimental results, change of conductivity by 10 or more orders of magnitude occurred both in the absence of external influences (spontaneously), and under the influence of an applied electric field, as well as other initiating factors (such as uniaxial pressure) . In a model of hopping conduction mechanism it is shown, that switching in the conduction states under the action of external field significantly (by orders of magnitude) below threshold can be associated with a high-resistance state instability that results from the sequence of "shorting" (reversible soft breakdown) of narrow insulating gaps between regions with relatively high conductivity. Increasing the field strength in the remaining insulating gaps ultimately leads to the formation of a conducting channel between the external electrodes and switching conductivity of the composite film sample in a state of high conductivity. This cascade model is essentially based on the transition from the usual description of the charge tunneling through single independent insulating gap to take into account correlations between adjacent gaps. In the frame of developed model other "anomalies" such as exponential dependence of the resistance on the sample thickness, pressure, and other influences can be qualitative explained. An analogy of the model with a cascading breakdown of avalanche transistors is also considered.

D. V. Vlasov; L. A. Apresyan

2013-02-25T23:59:59.000Z

369

Evaluation of geologic controls on geothermal anomalies in the Arkoma Basin, Oklahoma  

Science Conference Proceedings (OSTI)

Vitrinite-reflectance techniques were used to determine if there is a relationship between present geothermal gradient and coal rank in the Arkoma Basin. Three coal seams from high geothermal-gradient areas were compared with the same coal seams, respectively, from low geothermal-gradient areas. Samples were obtained from three core holes that were drilled in the high geothermal-gradient areas in Pittsburg and Haskell Counties, and three core holes that were drilled in the low geothermal-gradient areas in Latimer and Muskogee Counties. Nine additional coal samples were collected from active coal mines and one from an outcrop to supplement the core samples. The vitrinite-reflectance data indicates the present geothermal gradient did not produce the coal rank in the Arkoma Basin of Oklahoma. The coal rank is believed to have developed during the late Paleozoic, possibly in connection with the Ouachita orogeny. The coal isocarb maps suggest that the present geothermal-gradient pattern reflects the paleogeothermal gradient that produced the coal rank. Perhaps the intense folding and faulting associated with the Ouachita orogeny combined to transmit heat from the basement along an east-west thermal-anomaly zone through Haskell and Pittsburg Counties, Oklahoma. 60 refs., 16 figs., 3 tabs.

Cardott, B.J.; Hemish, L.A.; Johnson, C.R.; Luza, K.V.

1985-06-01T23:59:59.000Z

370

Empirical vertical structure of density anomaly in the Gulf of Mexico  

E-Print Network (OSTI)

Climatological vertical structure of density anomaly in the Gulf of Mexico is realistically characterized in a form useful for calibration and/or verification of numerical circulation models, employing a new method that allows variable depth and thermocline ventilation. We do this by local flat bottom dynamic analysis based on the primitive equations referred to an isopycnic coordinate system, so that potential density is treated as a conservative property. A global reference column is constructed for use in a dynamic modal decomposition in terms of local vertical structure functions that integrates seafloor depth and station data in a common spectral representation. The dynamic procedure is followed by joint and simple indirect EOF (empirical orthogonal function) analysis of modal coefficients for the complete data set and for binned subsets of the data. The dominant EOFs resemble dynamic modes, but combinations of dynamic modes are observed in EOFs having small contribution to the total variance. Indirect EOF representation of the data appears to have its greatest implications in the physical interpretation of the dynamic system, specifically in the coupling of dynamic modes.

Current, Carole Louise

1993-01-01T23:59:59.000Z

371

Anisotropic Curie Temperature Materials  

Science Conference Proceedings (OSTI)

Symposium, Magnetic Materials for Energy Applications -III. Presentation Title, Anisotropic Curie Temperature Materials. Author(s), Harsh Deep Chopra, Jason ...

372

Temperature-profile detector  

DOE Patents (OSTI)

Temperature profiles at elevated temperature conditions are monitored by use of an elongated device having two conductors spaced by the minimum distance required to normally maintain an open circuit between them. The melting point of one conductor is selected at the elevated temperature being detected, while the melting point of the other is higher. As the preselected temperature is reached, liquid metal will flow between the conductors creating short circuits which are detectable as to location.

Not Available

1981-01-29T23:59:59.000Z

373

Temperature profile detector  

DOE Patents (OSTI)

Temperature profiles at elevated temperature conditions are monitored by use of an elongated device having two conductors spaced by the minimum distance required to normally maintain an open circuit between them. The melting point of one conductor is selected at the elevated temperature being detected, while the melting point of the other is higher. As the preselected temperature is reached, liquid metal will flow between the conductors, creating short circuits which are detectable as to location.

Tokarz, Richard D. (West Richland, WA)

1983-01-01T23:59:59.000Z

374

Temperature discovery search  

Science Conference Proceedings (OSTI)

Temperature Discovery Search (TDS) is a new minimax-based game tree search method designed to compute or approximate the temperature of a combinatorial game. TDS is based on the concept of an enriched environment, where a combinatorial game G ... Keywords: ?? algorithm, amazons, combinatorial games, go, temperature discovery search

Martin Müller; Markus Enzenberger; Jonathan Schaeffer

2004-07-01T23:59:59.000Z

375

Winter Morning Air Temperature  

Science Conference Proceedings (OSTI)

Results of temperature measurements, which may be applied to inference of winter temperatures in data-sparse areas, are presented. The morning air temperatures during three winters were measured at 80 places in a 10 km × 30 km area along the ...

A. Hogan; M. Ferrick

1997-01-01T23:59:59.000Z

376

High temperature sensor  

DOE Patents (OSTI)

A high temperature sensor includes a pair of electrical conductors separated by a mass of electrical insulating material. The insulating material has a measurable resistivity within the sensor that changes in relation to the temperature of the insulating material within a high temperature range (1,000 to 2,000 K.). When required, the sensor can be encased within a ceramic protective coating.

Tokarz, Richard D. (West Richland, WA)

1982-01-01T23:59:59.000Z

377

Principal facts and a discussion of terrain correction methods for the complete Bouguer gravity anomaly map of the Cascade Mountains, Washington  

DOE Green Energy (OSTI)

Since 1974, the Division of Geology and Earth Resources, in conjunction with the US Department of Energy, has supported gravity studies in the Cascade Mountains of Washington State. Results of the Cascade gravity project are summarized graphically as a complete Bouguer gravity anomaly map of the Cascade Mountains, Washington (Danes and Phillips, 1983). This report provides supplementary data and documentation for the complete Bouguer gravity anomaly map. Presented are principal gravity facts, simple Bouguer and Free-air gravity anomalies, computational methods, error analysis and a discussion of terrain corrections.

Danes, Z.F.; Phillips, W.M.

1983-02-01T23:59:59.000Z

378

Effectiveness of shallow temperature surveys to target a geothermal...  

Open Energy Info (EERE)

has used to delineate thermal anomalies at many sites, has already identified a shallow steam-heated thermal anomaly at McGee Mountain. The second innovative technology, the...

379

Temperature compensated photovoltaic array  

DOE Patents (OSTI)

A temperature compensated photovoltaic module (20) comprised of a series of solar cells (22) having a thermally activated switch (24) connected in parallel with several of the cells (22). The photovoltaic module (20) is adapted to charge conventional batteries having a temperature coefficient (TC) differing from the temperature coefficient (TC) of the module (20). The calibration temperatures of the switches (24) are chosen whereby the colder the ambient temperature for the module (20), the more switches that are on and form a closed circuit to short the associated solar cells (22). By shorting some of the solar cells (22) as the ambient temperature decreases, the battery being charged by the module (20) is not excessively overcharged at lower temperatures. PV module (20) is an integrated solution that is reliable and inexpensive.

Mosher, Dan Michael (Plano, TX)

1997-11-18T23:59:59.000Z

380

Temperature compensated photovoltaic array  

DOE Patents (OSTI)

A temperature compensated photovoltaic module comprises a series of solar cells having a thermally activated switch connected in parallel with several of the cells. The photovoltaic module is adapted to charge conventional batteries having a temperature coefficient differing from the temperature coefficient of the module. The calibration temperatures of the switches are chosen whereby the colder the ambient temperature for the module, the more switches that are on and form a closed circuit to short the associated solar cells. By shorting some of the solar cells as the ambient temperature decreases, the battery being charged by the module is not excessively overcharged at lower temperatures. PV module is an integrated solution that is reliable and inexpensive. 2 figs.

Mosher, D.M.

1997-11-18T23:59:59.000Z

Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Weight Measurements of High-Temperature Superconductors during Phase Transition in Stationary, Non-Stationary Condition and under ELF Radiation  

E-Print Network (OSTI)

There have been a number of claims in the literature about gravity shielding effects of superconductors and more recently on the weight reduction of superconductors passing through their critical temperature. We report several experiments to test the weight of superconductors under various conditions. First, we report tests on the weight of YBCO and BSCCO high temperature superconductors passing through their critical temperature. No anomaly was found within the equipment accuracy ruling out claimed anomalies by Rounds and Reiss. Our experiments extend the accuracy of previous measurements by two orders of magnitude. In addition, for the first time, the weight of a rotating YBCO superconductor was measured. Also in this case, no weight anomaly could be seen within the accuracy of the equipment used. In addition, also weight measurements of a BSCCO superconductor subjected to extremely-low-frequency (ELF) radiation have been done to test a claim of weight reduction under these conditions by De Aquino, and again, no unusual behavior was found. These measurements put new important boundaries on any inertial effect connected with superconductivity - and consequently on possible space related applications.

M. Tajmar; K. Hense; K. Marhold; C. J. de Matos

2004-04-01T23:59:59.000Z

382

ANOMALIES IN THE APPLIED MAGNETIC FIELDS ON DIII-D AND THEIR IMPLICATIONS FOR THE UNDERSTANDING OF STABILITY EXPERIMENTS  

Science Conference Proceedings (OSTI)

Small non-axisymmetric magnetic fields are known to cause serious loss of stability in tokamaks leading to loss of confinement and abrupt termination of plasma current (disruptions). The best known examples are the locked mode and the resistive wall mode. Understanding of the underlying field anomalies (departures in the hardware-related fields from ideal toroidal and poloidal fields on a single axis) and the interaction of the plasma with them is crucial to tokamak development. Results of both locked mode experiments and resistive wall mode experiments done in DIII-D tokamak plasmas have been interpreted to indicate the presence of a significant anomalous field. New measurements of the magnetic field anomalies of the hardware systems have been made on DIII-D. The measured field anomalies due to the plasma shaping coils in DIII-D are smaller than previously reported. Additional evaluations of systematic errors have been made. New measurements of the anomalous fields of the ohmic heating and toroidal coils have been added. Such detailed in situ measurements of the fields of a tokamak are unique. The anomalous fields from all of the coils are one third of the values indicated from the stability experiments. These results indicate limitations in the understanding of the interaction of the plasma with the external field. They indicate that it may not be possible to deduce the anomalous fields in a tokamak from plasma experiments and that we may not have the basis needed to project the error field requirements of future tokamaks.

LUXON,J.L; SCHAFFER,M.J; JACKSON,G.L; LEUER,J.A; NAGY,A; SCOVILLE,J.T; STRAIT,E.J

2003-02-01T23:59:59.000Z

383

Relative Contributions of the Indian Ocean and Local SST Anomalies to the Maintenance of the Western North Pacific Anomalous Anticyclone during the El Niño Decaying Summer  

Science Conference Proceedings (OSTI)

To investigate the relative role of the cold SST anomaly (SSTA) in the western North Pacific (WNP) or Indian Ocean basin mode (IOBM) in maintaining an anomalous anticyclone over the western North Pacific (WNPAC) during the El Niño decaying summer,...

Bo Wu; Tim Li; Tianjun Zhou

2010-06-01T23:59:59.000Z

384

On the Joint Role of Subtropical Atmospheric Variability and Equatorial Subsurface Heat Content Anomalies in Initiating the Onset of ENSO Events  

Science Conference Proceedings (OSTI)

Previous research has shown that seasonal mean variations in both the subtropical/extratropical sea level pressures over the central North Pacific and the subsurface heat content anomalies in the western equatorial Pacific are significantly ...

Bruce T. Anderson

2007-04-01T23:59:59.000Z

385

Hydroclimate of the Western United States Based on Observations and Regional Climate Simulation of 1981–2000. Part II: Mesoscale ENSO Anomalies  

Science Conference Proceedings (OSTI)

The hydroclimate of the western United States is influenced by strong interannual variability of atmospheric circulation, much of which is associated with the El Niño–Southern Oscillation (ENSO). Precipitation anomalies during ENSO often show ...

L. Ruby Leung; Yun Qian; Xindi Bian; Allen Hunt

2003-06-01T23:59:59.000Z

386

A Critical Analysis of a Month-Long Cyclonic Anomaly in the New Zealand-Tasman Sea Region Using Isentropic Vorticity Budgets  

Science Conference Proceedings (OSTI)

The authors investigate the processes acting during a cyclonic “blocking” anomaly that dominated the upper troposphere in the New Zealand-Tasman Sea region during the very stormy month of August 1990. The authors use European Centre for Medium-...

Crispin J. Marks; Michael J. Revell

1994-12-01T23:59:59.000Z

387

Science as an Anomaly-Driven Enterprise: A Computational Approach to Generating Acceptable Theory Revisions in the Face of Anomalous Data  

E-Print Network (OSTI)

Anomalous data lead to scientific discoveries. Although machine learning systems can be forced to resolve anomalous data, these systems use general learning algorithms to do so. To determine whether anomaly-driven approaches to discovery produce more accurate models than the standard approaches, we built a program called Kalpana. We also used Kalpana to explore means for identifying those anomaly resolutions that are acceptable to domain experts. Our experiments indicated that anomaly-driven approaches can lead to a richer set of model revisions than standard methods. Additionally we identified semantic and syntactic measures that are significantly correlated with the acceptability of model revisions. These results suggest that by interpreting data within the context of a model and by interpreting model revisions within the context of domain knowledge, discovery systems can more readily suggest accurate and acceptable anomaly resolutions.

Will Bridewell; Will Bridewell Phd

2004-01-01T23:59:59.000Z

388

A Bayesian Algorithm for Reconstructing Climate Anomalies in Space and Time. Part II: Comparison with the Regularized Expectation–Maximization Algorithm  

Science Conference Proceedings (OSTI)

Part I presented a Bayesian algorithm for reconstructing climate anomalies in space and time (BARCAST). This method involves specifying simple parametric forms for the spatial covariance and temporal evolution of the climate field as well as “...

Martin P. Tingley; Peter Huybers

2010-05-01T23:59:59.000Z

389

Automatic temperature control  

Science Conference Proceedings (OSTI)

An automatic temperature control system is described for maintaining a preset temperature in an enclosed space in a building, comprising: heating and cooling means for conditioning the air in the enclosed space to maintain the preset temperature; exterior thermostat means outside the building for sensing ambient exterior temperature levels; interior thermostat means in the enclosed space, preset to the preset temperature to be maintained and connected with the heating and cooling means to energize the means for heating or cooling, as appropriate, when the preset temperature is reached; means defining a heat sink containing a volume of air heated by solar radiation, the volume of the heat sink being such that the temperature level therein is not affected by minor or temporary ambient temperature fluctuations; and heat sink thermostat means in the heat sink sensing the temperature in the heat sink, the heat sink thermostat means being connected in tandem with the exterior thermostat means and operative with the exterior thermostat means to switch the interior thermostat means to either a first readiness state for heating or a second readiness state for cooling, depending upon which mode is indicated by both the exterior and heat sink thermostat means, whereby the system automatically switches between heating and cooling, as required, in response to a comparison of exterior and heat sink temperatures.

Sheridan, J.P.

1986-07-22T23:59:59.000Z

390

The Effect of Tropical Atlantic Heating Anomalies upon GCM Rain Forecasts over the Americas  

Science Conference Proceedings (OSTI)

Severe droughts occurred over eastern sections of North America and central sections of South America in 1986 and 1988. We summarize data suggesting that both periods were characterized by above-normal tropical Atlantic sea surface temperatures ...

Julio Buchmann; Jan Paegle; Lawrence E. Buja; Robert E. Dickinson

1990-02-01T23:59:59.000Z

391

Thermodynamic Mechanisms Responsible for the Tropospheric Response to SST Anomalies in the Antarctic Circumpolar Wave  

Science Conference Proceedings (OSTI)

Tropospheric temperature and vorticity budgets for the Antarctic Circumpolar Wave (ACW) are diagnosed utilizing the National Centers for Environment Prediction–National Center for Atmospheric Research reanalysis datasets from 1983 to 1992, ...

Warren B. White; Shyh-Chin Chen

2002-09-01T23:59:59.000Z

392

Does Knowing the Oceanic PDO Phase Help Predict the Atmospheric Anomalies in Subsequent Months?  

Science Conference Proceedings (OSTI)

Based on analysis of a coupled model simulations with and without variability associated with the El Niño–Southern Oscillation (ENSO), it is demonstrated that knowing the current value of the ocean surface temperature–based index of the Pacific ...

Arun Kumar; Hui Wang; Wanqiu Wang; Yan Xue; Zeng-Zhen Hu

2013-02-01T23:59:59.000Z

393

The Detection and Significance of Diurnal Pressure and Potential Vorticity Anomalies East of the Rockies  

Science Conference Proceedings (OSTI)

Harmonic analysis of pressure, temperature, and precipitation data from 1000 Automated Surface Observing System (ASOS) stations reveals a mix of stationary and east–west moving disturbances east of the Rockies. Optimization of the pressure data ...

Yanping Li; Ronald B. Smith

2010-09-01T23:59:59.000Z

394

Homogeneous Nucleation of Water Anomalies Explained by Recognition and Elimination of Heterogeneous Species  

Science Conference Proceedings (OSTI)

A piston-typo expansion cloud chamber, capable of producing short pulses of nucleation, was used to study the homogeneous nucleation of water over a wide range of temperature and supersaturation. A large effort was made to remove impurities ...

Donald E. Hagen; James L. Kassner Jr.; Ronald C. Miller

1982-05-01T23:59:59.000Z

395

Daily Temperature Lag  

NLE Websites -- All DOE Office Websites (Extended Search)

Daily Temperature Lag Daily Temperature Lag Name: Shyammayi Status: teacher Grade: K-2 Country: Mauritius Date: Summer 2011 Question: At what time of the day is the temperature hottest? At what time of the day is the temperature coldest? Replies: In general, the hottest part of the day is late afternoon. The sun has passed its peak in the sky but still heats the Earth up until very late in the afternoon. The lowest temperatures are around dawn. Earth has had all night to get rid of the day's heat by radiating it into space. After sunrise, temperatures begin to climb. This can be changed by local storms, sea breezes or mountain breezes and even monsoon winds. Hope this helps. R. W. "Bob" Avakian Instructor Arts and Sciences/CRC Oklahoma State Univ. Inst. of Technology Shyammayi

396

Automatic temperature adjustment apparatus  

DOE Patents (OSTI)

An apparatus for increasing the efficiency of a conventional central space heating system is disclosed. The temperature of a fluid heating medium is adjusted based on a measurement of the external temperature, and a system parameter. The system parameter is periodically modified based on a closed loop process that monitors the operation of the heating system. This closed loop process provides a heating medium temperature value that is very near the optimum for energy efficiency.

Chaplin, James E. (66 Overlook Rd., Bloomingdale, NJ 07403)

1985-01-01T23:59:59.000Z

397

High-temperature sensor  

DOE Patents (OSTI)

A high temperature sensor is described which includes a pair of electrical conductors separated by a mass of electrical insulating material. The insulating material has a measurable resistivity within the sensor that changes in relation to the temperature of the insulating material within a high temperature range (1000 to 2000/sup 0/K). When required, the sensor can be encased within a ceramic protective coating.

Not Available

1981-01-29T23:59:59.000Z

398

High temperature refrigerator  

SciTech Connect

A high temperature magnetic refrigerator which uses a Stirling-like cycle in which rotating magnetic working material is heated in zero field and adiabatically magnetized, cooled in high field, then adiabatically demagnetized. During this cycle said working material is in heat exchange with a pumped fluid which absorbs heat from a low temperature heat source and deposits heat in a high temperature reservoir. The magnetic refrigeration cycle operates at an efficiency 70% of Carnot.

Steyert, Jr., William A. (Los Alamos, NM)

1978-01-01T23:59:59.000Z

399

Auburn low-temperature geothermal well. Volume 6. Final report  

DOE Green Energy (OSTI)

The Auburn well was drilled to explore for low temperature geothermal resources in central New York State. The Auburn site was selected based on: its proximity to the Cayuga County anomaly (30/sup 0/C/km), its favorable local geological conditions and the potential to provide hot water and space heating to two educational facilities. The well was drilled to a total depth of 5250 feet and into the Pre-Cambrian Basement. The well was extensively logged, flow and stress tested, hydraulically stimulated, and pump (pressure transient analysis) tested. The low-temperature geothermal potential was assessed in terms of: geological environment; hydrological conditions; reservoir characteristics; and recoverable hydrothermal reserves. The average geothermal gradient was measured to be as high as 26.7/sup 0/C/km with a bottom-hole temperature of 126/sup 0/ +- 1/sup 0/F. The proved volumetric resources were estimated to be 3.0 x 10/sup 6/ stock tank barrels (STB) with a maximum initial deliverability of approx.11,600 STB/D and a continuous deliverability of approx.3400 STB/D. The proved hydrothermal reserves were estimated to be 21.58 x 10/sup 10/ Btu based on a volumetric component (4.13 x 10/sup 10/ Btu), and a reinjection component (17.45 x 10/sup 10/ Btu). The conclusion was made that the Auburn low-temperature reservoir could be utilized to provide hot water and space heating to the Auburn School District.

Lynch, R.S.; Castor, T.P.

1983-12-01T23:59:59.000Z

400

External vs. body temperature  

NLE Websites -- All DOE Office Websites (Extended Search)

External vs. body temperature External vs. body temperature Name: jacqui Location: N/A Country: N/A Date: N/A Question: If one's internal body temperature is approximately 98.6, WHY when the external temperature is 98.6 do we feel hot? Since both temperatures are "balanced", shouldn't we feel comfortable? I am assuming here that humidity levels are controlled, and play no factor in the external temperature. Replies: First of all, skin temperature is lower than 98.6F; 98.6F is internal body temperature, so air at 98.6F is hotter than skin. But more important, it is the nervous system, and the cells in your skin that your brain uses to detect temperature that determine whether you "feel" hot or not, not whether the air is hotter than your skin. These are set so that you feel hot when the air is actually colder than your skin. Why? They are probably set to make you feel hot whenever the air is warm enough so that your body has some trouble getting rid of the excess heat it produces through metabolism. This insures that you take some actions to help your body cool off. Like drinking cool water, or reducing exercise

Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Surface Temperature of IGUs  

NLE Websites -- All DOE Office Websites (Extended Search)

117 117 Surface Temperatures of Insulated Glazing Units: Infrared Thermography Laboratory Measurements Brent T. Griffith, Daniel Türler, and Dariush Arasteh Building Technologies Program Environmental Energy Technologies Division Lawrence Berkeley National Laboratory University of California Berkeley, CA 94720 USA Fax: 510-486-6046, email: D_Arasteh@lbl.gov Abstract Data are presented for the distribution of surface temperatures on the warm-side surface of seven different insulated glazing units. Surface temperatures are measured using infrared thermography and an external referencing technique. This technique allows detailed mapping of surface temperatures that is non-intrusive. The glazings were placed between warm and cold environmental chambers that were operated at conditions

402

High Temperature Corrosion  

Science Conference Proceedings (OSTI)

Oct 18, 2010 ... Protective Coatings for Corrosion Resistance at High Temperatures: Vilupanur Ravi1; Thuan Nguyen1; Alexander Ly1; Kameron Harmon1; ...

403

Low temperature cryoprobe  

DOE Patents (OSTI)

A portable, hand held probe usable within a small confine to produce a point source of nitrogen or helium at a relatively constant temperature of 77 degrees Kelvin.

Sungaila, Zenon F. (Orland Park, IL)

1989-01-01T23:59:59.000Z

404

Fiber optic temperature sensor  

SciTech Connect

Our fiber optic temperature measurement sensor and system is a major improvement over methods currently in use in most industrial processes, and it delivers all of the attributes required simplicity, accuracy, and cost efficiency-to help improve all of these processes. Because temperature is a basic physical attribute of nearly every industrial and commercial process, our system can eventually result in significant improvements in nearly every industrial and commercial process. Many finished goods, and the materials that go into them, are critically dependent on the temperature. The better the temperature measurement, the better quality the goods will be and the more economically they can be produced. The production and transmission of energy requires the monitoring of temperature in motors, circuit breakers, power generating plants, and transmission line equipment. The more reliable and robust the methods for measuring these temperature, the more available, stable, and affordable the supply of energy will become. The world is increasingly realizing the threats to health and safety of toxic or otherwise undesirable by products of the industrial economy in the environment. Cleanup of such contamination often depends on techniques that require the constant monitoring of temperature in extremely hazardous environments, which can damage most conventional temperature sensors and which are dangerous for operating personnel. Our system makes such monitoring safer and more economical.

Rabold, D.

1995-12-01T23:59:59.000Z

405

Electrolysis – High Temperature – Hydrogen  

INL has developed a high-temperature process the utilizes solid oxide fuel cells that are operated in the electrolytic mode. The first process includes combining a high-temperature heat source (e.g. nuclear reactor) with a hydrogen production facility ...

406

Temperature stratified turbine compressors  

SciTech Connect

A method and apparatus for improving the efficiency of a compressor of a gas turbine engine is disclosed. The inlet gas entering the compressor is stratified into two portions of different temperatures. The higher temperature gas is introduced adjacent the outer tipe of the compressor blades to reduce the relative Mach number of the flow at the area.

Earnest, E.R.; Passinos, B.

1979-01-09T23:59:59.000Z

407

CSER 94-09: Implications of the heat anomaly in Tank 106-C to criticality safety  

Science Conference Proceedings (OSTI)

Water is periodically added to Tank C-106 to cool its waste. In March 1994 addition of water was temporarily discontinued to determine if the tank could be adequately cooled at a lower water level. Following an addition of water, a temperature fluctuation was observed on one of the thermocouple trees. This Criticality Safety Evaluation Report (CSER) explains why the anomalous temperature measurements could not have been caused by nuclear criticality. Waste in Tank C-106 was discharged from processing facilities under controls designed to ensure that the contents of the tank would remain well subcritical under all credible conditions. The observed temperature profile does not fit the profile expected from a criticality event. In addition, there has been no indication of any significant increase in the rate of water evaporation.

Rogers, C.A.

1994-10-01T23:59:59.000Z

408

High Temperature ESP Monitoring  

SciTech Connect

The objective of the High Temperature ESP Monitoring project was to develop a downhole monitoring system to be used in wells with bottom hole well temperatures up to 300°C for measuring motor temperature, formation pressure, and formation temperature. These measurements are used to monitor the health of the ESP motor, to track the downhole operating conditions, and to optimize the pump operation. A 220 ºC based High Temperature ESP Monitoring system was commercially released for sale with Schlumberger ESP motors April of 2011 and a 250 ºC system with will be commercially released at the end of Q2 2011. The measurement system is now fully qualified, except for the sensor, at 300 °C.

Jack Booker; Brindesh Dhruva

2011-06-20T23:59:59.000Z

409

Bond orientational ordering in liquids: Towards a unified description of water-like anomalies, liquid-liquid transition, glass transition, and crystallization  

E-Print Network (OSTI)

There are at least three fundamental states of matter, depending upon temperature and pressure: gas, liquid, and solid (crystal). These states are separated by first-order phase transitions between them. In both gas and liquid phases the complete translational and rotational symmetry exist, whereas in a solid phase both symmetries are broken. In intermediate phases between liquid and solid, which include liquid crystal and plastic crystal phases, only one of the two symmetries is preserved. Among the fundamental states of matter, the liquid state is most poorly understood. We argue that it is crucial for a better understanding of liquid to recognize that a liquid generally has a tendency to have local structural order and its presence is intrinsic and universal to any liquid. Such structural ordering is a consequence of many body correlations, more specifically, bond angle correlations, which we believe are crucial for the description of the liquid state. We show that this physical picture may naturally explain difficult unsolved problems associated with the liquid state, such as anomalies of water-type liquids (water, Si, Ge, ...), liquid-liquid transition, liquid-glass transition, crystallization and quasicrystal formation, in a unified manner. In other words, we need a new order parameter representing low local free-energy configuration, which is bond orientational order parameter in many cases, in addition to density order parameter for the physical description of these phenomena. Here we review our two-order-parameter model of liquid and consider how transient local structural ordering is linked to all of the above-mentioned phenomena. The relationship between these phenomena are also discussed.

Hajime Tanaka

2013-07-02T23:59:59.000Z

410

Observed Changes in the Lifetime and Amplitude of the Madden–Julian Oscillation Associated with Interannual ENSO Sea Surface Temperature Anomalies  

Science Conference Proceedings (OSTI)

The Madden–Julian oscillation (MJO) is analyzed using the reanalysis zonal wind– and satellite outgoing longwave radiation–based indices of Wheeler and Hendon for the 1974–2005 period. The average lifetime of the MJO events varies with season (36 ...

Benjamin Pohl; Adrian J. Matthews

2007-06-01T23:59:59.000Z

411

Interannual Variability of the Onset of the Indian Summer Monsoon and Its Association with Atmospheric Features, El Niño, and Sea Surface Temperature Anomalies  

Science Conference Proceedings (OSTI)

The long-term mean date of the monsoon onset over Kerala (MOK) varies between 30 May and 2 June according to different estimates, with a standard deviation of 8–9 days. The earliest date of MOK, and the most delayed one, during the last 100 years ...

Porathur V. Joseph; Jon K. Eischeid; Robert J. Pyle

1994-01-01T23:59:59.000Z

412

REALIZING PRESSURE, TEMPERATURE, AND LENGTH ...  

Science Conference Proceedings (OSTI)

... The basic concept behind the proposed apparatus is illustrated in ... at room temperature, requiring realization of thermodynamic temperature near 23 ...

2013-07-10T23:59:59.000Z

413

Test for consistence of a flyby anomaly simulation with the observed Doppler residuals for the Messenger flybys of Mercury  

E-Print Network (OSTI)

In 2007, the observed Earth flyby anomalies have been successfully simulated using an empirical formula (H. J. Busack, 2007). This simulation has led to the prediction of anomaly values, to be expected for the Rosetta flybys of Mars in 2007, and following twice of Earth in 2007 and 2009. While the data for the Mars flyby are yet under evaluation, the predictions of the formula for the last two Earth flybys of Rosetta are fully confirmed now. This is remarkable, since an alternatively proposed formula (Anderson et al., 2007) failed to predict the correct values for the recent flybys. For the Mercury flybys of the Messenger spacecraft, this alternative formula predicts a null result. In the meantime, Doppler residuals of these flybys on 14.01.2008 and 06.10.2008 are availabel. On both flybys, significant residuals were observed, using gravity data derived by Mariner 10 on Mercury (D. E. Smith et al., 2009). According to the authors, these residuals cannot be eliminated totally by adjustment of the second degree gravity coefficients and by assumption of irregular mass concentrations of acceptable value on Mercury. In this investigation, I adapt the output of the simulation program to compare with the measured Doppler residuals of the Mercury flybys without changing the formerly derived parameters for the Earth flybys. The simulation with these parameters leads to Doppler residuals of the Mercury flybys compatible with the measured curves. Additionally, the expected flyby anomalies are calculated. Since the gravity field of Mercury is not explored yet with sufficient accuracy, this result cannot be falsified or confirmed until the evaluation of the coming Mercury orbits of Messenger will be finished. If the proposed empirical formula would be confirmed then again, this would be a strong indication of an underlying physical reality.

Hans-Juergen Busack

2010-03-07T23:59:59.000Z

414

Westward-propagating SST Anomaly Features in the Sargasso Sea, 1982–88  

Science Conference Proceedings (OSTI)

Sea surface temperature (Ts) maps of the region from 59.5° to 75.5°W, 22.5° to 33.5°N containing the western North Atlantic Subtropical Convergence Zone (STCZ) were derived from AVHRR/2 images. The 7- year mean annual cycle was removed and the ...

George R. Halliwell Jr.; Peter Cornillon; Deirdre A. Byrne

1991-05-01T23:59:59.000Z

415

Fever and Body Temperature  

NLE Websites -- All DOE Office Websites (Extended Search)

Fever and Body Temperature Fever and Body Temperature Name: Ying Location: N/A Country: N/A Date: N/A Question: Hi, I have a few questions that I want to ask you: Why does your body chose to raise its temperature when you have a fever? Replies: Most bacteria and viruses that live in your body grow best at body temperature. They don't grow very well when the temperature is raised. When there are bacteria in your body they give off chemicals that signal white blood cells to come to try to eat them and also affect an area in your brain called the hypothalamus. This part of the brain controls alot of the automatic functions in your body and is also the site of your body's "thermostat". When the chemicals from the bacteria circulate through the hypothalamus it sets the body's temperature higher. This is called a fever. Your body kind of tries to "sweat out" the bacteria and kill them with a higher temperature. Some scientists question whether trying to bring down a fever is the best thing to do. If it isn't too high, some believe we should just let it work

416

Maintaining body temperature  

NLE Websites -- All DOE Office Websites (Extended Search)

Maintaining body temperature Maintaining body temperature Name: Jeff Location: N/A Country: N/A Date: N/A Question: What keeps the human body at a constant temperature of 98.6? Replies: Maintaining body temperature is very complex. It also takes a lot of energy. About 80% of the energy from the food you eat goes to maintaining body temperature. Basically, the chemical reactions of metabolism of stored food, especially fats, generate heat as a by product. This heat warms the body. The brain reads temperature and controls to some extent the rate of this metabolism. There are also many other mechanisms triggered by the brain to keep the core of your body warm, even if the periphery (skin) is cold. Blood vessels to the fingers and toes constrict, so that the cold air doesn't cool the blood too much, so that cooled blood doesn't cool down the heart and brain when it returns. In severe cases, your body will sacrifice a finger or a toe to keep you from dying of cold core temperature (frostbite: it saves your life!). Also the brain can order a lot of muscles to contract rapidly. This generates a lot of heat quickly, a response called shivering. There's much more to this exciting field of research.

417

High Temperature Capacitor Development  

Science Conference Proceedings (OSTI)

The absence of high-temperature electronics is an obstacle to the development of untapped energy resources (deep oil, gas and geothermal). US natural gas consumption is projected to grow from 22 trillion cubic feet per year (tcf) in 1999 to 34 tcf in 2020. Cumulatively this is 607 tcf of consumption by 2020, while recoverable reserves using current technology are 177 tcf. A significant portion of this shortfall may be met by tapping deep gas reservoirs. Tapping these reservoirs represents a significant technical challenge. At these depths, temperatures and pressures are very high and may require penetrating very hard rock. Logistics of supporting 6.1 km (20,000 ft) drill strings and the drilling processes are complex and expensive. At these depths up to 50% of the total drilling cost may be in the last 10% of the well depth. Thus, as wells go deeper it is increasingly important that drillers are able to monitor conditions down-hole such as temperature, pressure, heading, etc. Commercial off-the-shelf electronics are not specified to meet these operating conditions. This is due to problems associated with all aspects of the electronics including the resistors and capacitors. With respect to capacitors, increasing temperature often significantly changes capacitance because of the strong temperature dependence of the dielectric constant. Higher temperatures also affect the equivalent series resistance (ESR). High-temperature capacitors usually have low capacitance values because of these dielectric effects and because packages are kept small to prevent mechanical breakage caused by thermal stresses. Electrolytic capacitors do not operate at temperatures above 150oC due to dielectric breakdown. The development of high-temperature capacitors to be used in a high-pressure high-temperature (HPHT) drilling environment was investigated. These capacitors were based on a previously developed high-voltage hybridized capacitor developed at Giner, Inc. in conjunction with a unique high-temperature electrolyte developed during the course of the program. During this program the feasibility of operating a high voltage hybridized capacitor at 230oC was demonstrated. Capacitor specifications were established in conjunction with potential capacitor users. A method to allow for capacitor operation at both ambient and elevated temperatures was demonstrated. The program was terminated prior to moving into Phase II due to a lack of cost-sharing funds.

John Kosek

2009-06-30T23:59:59.000Z

418

Moderate Temperature | Open Energy Information  

Open Energy Info (EERE)

Moderate Temperature Moderate Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: Moderate Temperature Dictionary.png Moderate Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid between 190°C and 230°C is considered by Sanyal to be "moderate temperature." "The next higher resource temperature limit is chosen as 230°C, which is lower than the minimum initial resource temperature encountered in

419

ARM - Measurement - Atmospheric temperature  

NLE Websites -- All DOE Office Websites (Extended Search)

temperature temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Atmospheric temperature The temperature indicated by a thermometer exposed to the air in a place sheltered from direct solar radiation. Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AERI : Atmospheric Emitted Radiance Interferometer SONDE : Balloon-Borne Sounding System CO2FLX : Carbon Dioxide Flux Measurement Systems ECOR : Eddy Correlation Flux Measurement System

420

ARM - Measurement - Virtual temperature  

NLE Websites -- All DOE Office Websites (Extended Search)

govMeasurementsVirtual temperature govMeasurementsVirtual temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Virtual temperature The virtual temperature Tv = T(1 + rv/{epsilon}), where rv is the mixing ratio, and {epsilon} is the ratio of the gas constants of air and water vapor ( 0.622). Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CO2FLX : Carbon Dioxide Flux Measurement Systems MWRP : Microwave Radiometer Profiler RWP : Radar Wind Profiler

Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Complete Urban Surface Temperatures  

Science Conference Proceedings (OSTI)

An observation program using ground and airborne thermal infrared radiometers is used to estimate the surface temperature of urban areas, taking into account the total active surface area. The authors call this the complete urban surface ...

J. A. Voogt; T. R. Oke

1997-09-01T23:59:59.000Z

422

Temperature | Open Energy Information  

Open Energy Info (EERE)

Showing 7 properties using this type. A Property:AvgGeoFluidTemp C Property:Combustion Intake Air Temperature F Property:FirstWellTemp G Property:GeofluidTemp M...

423

Low temperature cryoprobe  

DOE Patents (OSTI)

A portable, hand held probe usable within a small confine to produce a point source of nitrogen or helium at a relatively constant temperatures of 77 degrees Kelvin, is discussed. 3 figs.

Sungaila, Z.F.

1988-04-12T23:59:59.000Z

424

Temperature-aware microarchitecture  

Science Conference Proceedings (OSTI)

With power density and hence cooling costs rising exponentially, processor packaging can no longer be designed for the worst case, and there is an urgent need for runtime processor-level techniques that can regulate operating temperature when the package's ...

Kevin Skadron; Mircea R. Stan; Wei Huang; Sivakumar Velusamy; Karthik Sankaranarayanan; David Tarjan

2003-06-01T23:59:59.000Z

425

High Temperature | Open Energy Information  

Open Energy Info (EERE)

Temperature Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: High Temperature Dictionary.png High Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid between 230°C and 300°C is considered by Sanyal to be "high temperature." "Above a temperature level of 230°C, the reservoir would be expected to become two-phase at some point during exploitation. The next higher

426

OGLE-2008-BLG-510: first automated real-time detection of a weak microlensing anomaly - brown dwarf or stellar binary?  

E-Print Network (OSTI)

The microlensing event OGLE-2008-BLG-510 is characterised by an evident asymmetric shape of the peak, promptly detected by the ARTEMiS system in real time. The skewness of the light curve appears to be compatible both with binary-lens and binary-source models, including the possibility that the lens system consists of an M dwarf orbited by a brown dwarf. The detection of this microlensing anomaly and our analysis demonstrates that: 1) automated real-time detection of weak microlensing anomalies with immediate feedback is feasible, efficient, and sensitive, 2) rather common weak features intrinsically come with ambiguities that are not easily resolved from photometric light curves, 3) a modelling approach that finds all features of parameter space rather than just the `favourite model' is required, and 4) the data quality is most crucial, where systematics can be confused with real features, in particular small higher-order effects such as orbital motion signatures. It moreover becomes apparent that events wit...

Bozza, V; Rattenbury, N J; Joergensen, U G; Tsapras, Y; Bramich, D M; Udalski, A; Bond, I A; Liebig, C; Cassan, A; Fouque, P; Fukui, A; Hundertmark, M; Shin, I -G; Lee, S H; Choi, J -Y; Park, S -Y; Gould, A; Allan, A; Mao, S; Wyrzykowski, L; Street, R A; Buckley, D; Nagayama, T; Mathiasen, M; Hinse, T C; Novati, S Calchi; Harpsoee, K; Mancini, L; Scarpetta, G; Anguita, T; Burgdorf, M J; Horne, K; Hornstrup, A; Kains, N; Kerins, E; Kjaergaard, P; Masi, G; Rahvar, S; Ricci, D; Snodgrass, C; Southworth, J; Steele, I A; Surdej, J; Thoene, C C; Wambsganss, J; Zub, M; Albrow, M D; Batista, V; Beaulieu, J -P; Bennett, D P; Caldwell, J A R; Cole, A; Cook, K H; Coutures, C; Dieters, S; Prester, D Dominis; Donatowicz, J; Greenhill, J; Kane, S R; Kubas, D; Marquette, J -B; Martin, R; Menzies, J; Pollard, K R; Sahu, K C; Williams, A; Szymanski, M K; Kubiak, M; Pietrzynski, G; Soszynski, I; Poleski, R; Ulaczyk, K; DePoy, D L; Dong, S; Han, C; Janczak, J; Lee, C -U; Pogge, R W; Abe, F; Furusawa, K; Hearnshaw, J B; Itow, Y; Kilmartin, P M; Korpela, A V; Lin, W; Ling, C H; Masuda, K; Matsubara, Y; Miyake, N; Muraki, Y; Ohnishi, K; Perrott, Y C; Saito, To; Skuljan, L; Sullivan, D J; Sumi, T; Suzuki, D; Sweatman, W L; Tristram, P J; Wada, K; Yock, P C M; Gulbis, A; Hashimoto, Y; Kniazev, A; Vaisanen, P

2012-01-01T23:59:59.000Z

427

Low Temperature | Open Energy Information  

Open Energy Info (EERE)

Temperature Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: Low Temperature Dictionary.png Low Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid between 150°C and 190°C is considered by Sanyal to be "low temperature." "The mobile fluid phase in these reservoirs is liquid water. A number of commercial power projects have been operated over the last two decades

428

High temperature thermometric phosphors  

SciTech Connect

A high temperature phosphor consists essentially of a material having the general formula LuPO.sub.4 :Dy.sub.(x),Eu.sub.y) wherein: 0.1 wt %.ltoreq.x.ltoreq.20 wt % and 0.1 wt %.ltoreq.y.ltoreq.20 wt %. The high temperature phosphor is in contact with an article whose temperature is to be determined. The article having the phosphor in contact with it is placed in the environment for which the temperature of the article is to be determined. The phosphor is excited by a laser causing the phosphor to fluoresce. The emission from the phosphor is optically focused into a beam-splitting mirror which separates the emission into two separate emissions, the emission caused by the dysprosium dopant and the emission caused by the europium dopent. The separated emissions are optically filtered and the intensities of the emission are detected and measured. The ratio of the intensity of each emission is determined and the temperature of the article is calculated from the ratio of the intensities of the separate emissions.

Allison, Stephen W. (Knoxville, TN); Cates, Michael R. (Oak Ridge, TN); Boatner, Lynn A. (Oak Ridge, TN); Gillies, George T. (Earlysville, VA)

1999-03-23T23:59:59.000Z

429

Temperature initiated passive cooling system  

DOE Patents (OSTI)

A passive cooling system for cooling an enclosure only when the enclosure temperature exceeds a maximum standby temperature comprises a passive heat transfer loop containing heat transfer fluid having a particular thermodynamic critical point temperature just above the maximum standby temperature. An upper portion of the heat transfer loop is insulated to prevent two phase operation below the maximum standby temperature.

Forsberg, Charles W. (Oak Ridge, TN)

1994-01-01T23:59:59.000Z

430

Temperature initiated passive cooling system  

DOE Patents (OSTI)

A passive cooling system for cooling an enclosure only when the enclosure temperature exceeds a maximum standby temperature comprises a passive heat transfer loop containing heat transfer fluid having a particular thermodynamic critical point temperature just above the maximum standby temperature. An upper portion of the heat transfer loop is insulated to prevent two phase operation below the maximum standby temperature. 1 fig.

Forsberg, C.W.

1994-11-01T23:59:59.000Z

431

temperature | OpenEI  

Open Energy Info (EERE)

temperature temperature Dataset Summary Description Freedom Field is a not-for-profit organization formed to facilitate development and commercialization of renewable energy solutions. The organization has installed a variety of renewable energy generating technologies at their facility (located at Rock River Water Reclamation in Rockford, IL), with the intention of serving as a demonstration facility. The facility monitors data (at 5-minute intervals) from a weather station, 12.4 kW of PV panels (56 220-watt panels), a 10kW wind turbine (HAWT), a 1.2 kW wind turbine (VAWT), an absorption cooling system, and biogas burners. Source Freedom Field Date Released July 19th, 2011 (3 years ago) Date Updated Unknown Keywords biogas monitoring data PV radiance solar temperature

432

Finite Temperature Aging Holography  

E-Print Network (OSTI)

We construct the gravity background which describes the dual field theory with aging invariance. We choose the decay modes of the bulk scalar field in the internal spectator direction to obtain the dissipative behavior of the boundary correlation functions of the dual scalar fields. In particular, the two-time correlation function at zero temperature has the characteristic features of the aging system: power law decay, broken time translation and dynamical scaling. We also construct the black hole backgrounds with asymptotic aging invariance. We extensively study characteristic behavior of the finite temperature two-point correlation function via analytic and numerical methods.

Seungjoon Hyun; Jaehoon Jeong; Bom Soo Kim

2011-08-29T23:59:59.000Z

433

Temperature determination using pyrometry  

DOE Patents (OSTI)

A method for determining the temperature of a surface upon which a coating is grown using optical pyrometry by correcting Kirchhoff's law for errors in the emissivity or reflectance measurements associated with the growth of the coating and subsequent changes in the surface thermal emission and heat transfer characteristics. By a calibration process that can be carried out in situ in the chamber where the coating process occurs, an error calibration parameter can be determined that allows more precise determination of the temperature of the surface using optical pyrometry systems. The calibration process needs only to be carried out when the physical characteristics of the coating chamber change.

Breiland, William G. (Albuquerque, NM); Gurary, Alexander I. (Bridgewater, NJ); Boguslavskiy, Vadim (Princeton, NJ)

2002-01-01T23:59:59.000Z

434

Fluorescent temperature sensor  

Science Conference Proceedings (OSTI)

The present invention is a fluorescent temperature sensor or optical thermometer. The sensor includes a solution of 1,3-bis(1-pyrenyl)propane within a 1-butyl-1-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquid solvent. The 1,3-bis(1-pyrenyl)propane remains unassociated when in the ground state while in solution. When subjected to UV light, an excited state is produced that exists in equilibrium with an excimer. The position of the equilibrium between the two excited states is temperature dependent.

Baker, Gary A [Los Alamos, NM; Baker, Sheila N [Los Alamos, NM; McCleskey, T Mark [Los Alamos, NM

2009-03-03T23:59:59.000Z

435

Variability of Temperature in Wisconsin  

Science Conference Proceedings (OSTI)

Daily maximum and minimum temperatures since 1897 at three stations in Wisconsin are examined, and the hypothesis is tested that there is no association between interdiurnal or interannual temperature and either the local mean temperature or an ...

W. A. R. Brinkmann

1983-01-01T23:59:59.000Z

436

Temperature differential detection device  

DOE Patents (OSTI)

A temperature differential detection device for detecting the temperature differential between predetermined portions of a container wall is disclosed as comprising a Wheatstone bridge circuit for detecting resistance imbalance with a first circuit branch having a first elongated wire element mounted in thermal contact with a predetermined portion of the container wall, a second circuit branch having a second elongated wire element mounted in thermal contact with a second predetermined portion of a container wall with the wire elements having a predetermined temperature-resistant coefficient, an indicator interconnected between the first and second branches remote from the container wall for detecting and indicating resistance imbalance between the first and second wire elements, and connector leads for electrically connecting the wire elements to the remote indicator in order to maintain the respective resistance value relationship between the first and second wire elements. The indicator is calibrated to indicate the detected resistance imbalance in terms of a temperature differential between the first and second wall portions.

Girling, Peter M. (Allentown, PA)

1986-01-01T23:59:59.000Z

437

Temperature differential detection device  

DOE Patents (OSTI)

A temperature differential detection device for detecting the temperature differential between predetermined portions of a container wall is disclosed as comprising a Wheatstone bridge circuit for detecting resistance imbalance with a first circuit branch having a first elongated wire element mounted in thermal contact with a predetermined portion of the container wall, a second circuit branch having a second elongated wire element mounted in thermal contact with a second predetermined portion of a container wall with the wire elements having a predetermined temperature-resistant coefficient, an indicator interconnected between the first and second branches remote from the container wall for detecting and indicating resistance imbalance between the first and second wire elements, and connector leads for electrically connecting the wire elements to the remote indicator in order to maintain the respective resistance value relationship between the first and second wire elements. The indicator is calibrated to indicate the detected resistance imbalance in terms of a temperature differential between the first and second wall portions. 2 figs.

Girling, P.M.

1986-04-22T23:59:59.000Z

438

NUCLEOSYNTHETIC TUNGSTEN ISOTOPE ANOMALIES IN ACID LEACHATES OF THE MURCHISON CHONDRITE: IMPLICATIONS FOR HAFNIUM-TUNGSTEN CHRONOMETRY  

Science Conference Proceedings (OSTI)

Progressive dissolution of the Murchison carbonaceous chondrite with acids of increasing strengths reveals large internal W isotope variations that reflect a heterogeneous distribution of s- and r-process W isotopes among the components of primitive chondrites. At least two distinct carriers of nucleosynthetic W isotope anomalies must be present, which were produced in different nucleosynthetic environments. The co-variation of {sup 182}W/{sup 184}W and {sup 183}W/{sup 184}W in the leachates follows a linear trend that is consistent with a mixing line between terrestrial W and a presumed s-process-enriched component. The composition of the s-enriched component agrees reasonably well with that predicted by the stellar model of s-process nucleosynthesis. The co-variation of {sup 182}W/{sup 184}W and {sup 183}W/{sup 184}W in the leachates provides a means for correcting the measured {sup 182}W/{sup 184}W and {sup 182}W/{sup 183}W of Ca-Al-rich inclusions (CAI) for nucleosynthetic anomalies using the isotopic variations in {sup 183}W/{sup 184}W. This new correction procedure is different from that used previously, and results in a downward shift of the initial {epsilon}{sup 182}W of CAI to -3.51 {+-} 0.10 (where {epsilon}{sup 182}W is the variation in 0.01% of the {sup 182}W/{sup 183}W ratio relative to Earth's mantle). This revision leads to Hf-W model ages of core formation in iron meteorite parent bodies that are {approx}2 Myr younger than previously calculated. The revised Hf-W model ages are consistent with CAI being the oldest solids formed in the solar system, and indicate that core formation in some planetesimals occurred within {approx}2 Myr of the beginning of the solar system.

Burkhardt, Christoph; Wieler, Rainer [Institute of Geochemistry and Petrology, Clausiusstrasse 25, ETH Zurich, CH-8092 Zurich (Switzerland); Kleine, Thorsten [Institut fuer Planetologie, Westfaelische Wilhelms-Universitaet Muenster, Wilhelm-Klemm-Strasse 10, D-48149 Muenster (Germany); Dauphas, Nicolas, E-mail: burkhardt@erdw.ethz.ch [Origins Laboratory, Department of the Geophysical Sciences and Enrico Fermi Institute, University of Chicago, 5734 South Ellis Avenue, Chicago, IL 60637 (United States)

2012-07-01T23:59:59.000Z

439

The Southern Oscillation. Part V: The Anomalies in the Lower Stratosphere of the Northern Hemisphere in Winter and a Comparison with the Quasi-Biennial Oscillation  

Science Conference Proceedings (OSTI)

The mean anomalies of 50 mb height in the northern winter for seven Warm Events in the Southern Oscillation show a weak polar vortex and an enhanced Aleutian high. In the mean for six Cold Events the polar vortex is unusually strong and the ...

H. van Loon; K. Labitzke

1987-02-01T23:59:59.000Z

440

Interdecadal Relationships between the Asian–Pacific Oscillation and Summer Climate Anomalies over Asia, North Pacific, and North America during a Recent 100 Years  

Science Conference Proceedings (OSTI)

Summertime relationships between the Asian–Pacific Oscillation (APO) and climate anomalies over Asia, the North Pacific, and North America are examined on an interdecadal time scale. The values of APO were low from the 1880s to the mid-1910s and ...

Ping Zhao; Song Yang; Huijun Wang; Qiang Zhang

2011-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Application of magnetic method to assess the extent of high temperature geothermal reservoirs  

DOE Green Energy (OSTI)

The extent of thermally altered rocks in high temperature geothermal reservoirs hosted by young volcanic rocks can be assessed from magnetic surveys. Magnetic anomalies associated with many geothermal field in New Zealand and Indonesia can be interpreted in terms of thick (up to 1 km) demagnetized reservoir rocks. Demagnetization of these rocks has been confirmed by core studies and is caused by hydrothermal alteration produced from fluid/rock interactions. Models of the demagnetized Wairakei (NZ) and Kamojang (Indonesia) reservoirs are presented which include the productive areas. Magnetic surveys give fast and economical investigations of high temperature prospects if measurements are made from the air. The magnetic interpretation models can provide important constraints for reservoir models. Magnetic ground surveys can also be used to assess the extent of concealed near surface alteration which can be used in site selection of engineering structures.

Soengkono, S.; Hochstein, M.P.

1995-01-26T23:59:59.000Z

442

Structural and heat-flow implications of infrared anomalies at Mt. Hood, Oregon  

DOE Green Energy (OSTI)

Surface thermal features occur in an area of 9700 m/sup 2/ at Mt. Hood, on the basis of an aerial line-scan survey made April 26, 1973. The distribution of the thermal areas below the summit of Mt. Hood, shown on planimetrically corrected maps at 1 : 12,000, suggests structural control by a fracture system and brecciated zone peripheral to a hornblende-dacite plug dome (Crater Rock), and by a concentric fracture system that may have been associated with development of the present crater. The extent and inferred temperature of the thermal areas permits a preliminary estimate of a heat discharge of 10 megawatts, by analogy with similar fumarole and thermal fields of Mt. Baker, Washington. This figure includes a heat loss of 4 megawatts (MW) via conduction, diffusion, evaporation, and radiation to the atmosphere, and a somewhat less certain loss of 6 MW via fumarolic mass transfer of vapor and advective heat loss from runoff and ice melt. The first part of the estimate is based on two-point models for differential radiant exitance and differential flux via conduction, diffusion, evaporation, and radiation from heat balance of the ground surface. Alternate methods for estimating volcanogenic geothermal flux that assume a quasi-steady state heat flow also yield estimates in the 5-11 MW range. Heat loss equivalent to cooling of the dacite plug dome is judged to be insufficient to account for the heat flux at the fumarole fields.

Friedman, J.D.; Frank, D.

1977-01-01T23:59:59.000Z

443

A beacon of new physics: The Pioneer anomaly modelled as a path based speed loss driven by the externalisation of aggregate non-inertial QM energy  

E-Print Network (OSTI)

This treatise outlines how a non-systematic based Pioneer anomaly, with its implied violation (re: 'low' mass bodies only) of both general relativity's weak equivalence principle and the Newtonian inverse-square law, can be successfully modelled. These theoretical hurdles and various awkward observational constraints, such as the low value of Pioneer 11's anomaly pre-Saturn encounter, have (to date) not been convincingly modelled. Notwithstanding the recent trend to embrace a non-constant Sun/Earth-directed heat based explanation of this anomalous deceleration, the actual: nature, direction, and temporal and spatial variation of the Pioneer anomaly remain an open arena of research. Working backwards from the observational evidence, and rethinking: time, mass, quantum entanglement and non-locality, we hypothesise a mechanism involving a quantum mechanical energy source and a new type of 'gravitational' field; neither of which lie within general relativity's domain of formulation/application. By way of a systemic conservation of energy principle, an internally inexpressible (aggregate) non-inertial energy discrepancy/uncertainty -- involving a myriad of quantum (lunar/third-body residing) atomic and molecular systems moving in analog curved spacetime -- is (non-locally) re-expressed externally as a (rotating) non-Euclidean spatial geometry perturbation. At a moving body each "rotating space-warp" induces sinusoidal proper acceleration and speed perturbations, as well as a path-based constant (per cycle) rate of speed shortfall relative to predictions that omit the additional effect. 'Solutions' of the new model may extend to: the Earth flyby anomaly, solar system related large-scale anomalies in the CMB radiation data, the nature of dark energy, and how a theory of everything unification agenda is inadvertently impeding a deeper understanding of physical reality and quantum entanglement.

Paul G. ten Boom

2012-05-15T23:59:59.000Z

444

High Temperature Superconductivity Partners | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

High Temperature Superconductivity Partners High Temperature Superconductivity Partners Map showing DOE's partnersstakeholders in the High Temperature Superconductivity Program...

445

Effects of Temperature  

Science Conference Proceedings (OSTI)

Table 1   Typical elevated temperatures in engineering applications...825â??975 0.45â??0.50 Pressure vessels and piping in nuclear reactors 316 stainless steel 650â??750 0.35â??0.40 Reactor skirts in nuclear reactors 316 stainless steel 850â??950 0.45â??0.55 Gas turbine blades Nickel-base superalloys 775â??925 0.45â??0.60 Burner cans for gas turbine engines Oxide dispersion-strengthened...

446

Thermionic Converter Temperature Controller  

DOE Patents (OSTI)

A method and apparatus for controlling the temperature of a thermionic reactor over a wide range of operating power, including a thermionic reactor having a plurality of integral cesium reservoirs, a honeycomb material disposed about the reactor which has a plurality of separated cavities, a solid sheath disposed about the honeycomb material and having an opening therein communicating with the honeycomb material and cavities thereof, and a shell disposed about the sheath for creating a coolant annulus therewith so that the coolant in the annulus may fill the cavities and permit nucleate boiling during the operation of the reactor.

Shaner,B. J.; Wolf, Joseph H.; Johnson, Robert G. R.

1999-08-23T23:59:59.000Z

447

Thermionic converter temperature controller  

DOE Patents (OSTI)

A method and apparatus for controlling the temperature of a thermionic reactor over a wide range of operating power, including a thermionic reactor having a plurality of integral cesium reservoirs, a honeycomb material disposed about the reactor which has a plurality of separated cavities, a solid sheath disposed about the honeycomb material and having an opening therein communicating with the honeycomb material and cavities thereof, and a shell disposed about the sheath for creating a coolant annulus therewith so that the coolant in the annulus may fill the cavities and permit nucleate boiling during the operation of the reactor.

Shaner, Benjamin J. (McMurray, PA); Wolf, Joseph H. (Pittsburgh, PA); Johnson, Robert G. R. (Trafford, PA)

2001-04-24T23:59:59.000Z

448

Estimating Winter Design Temperatures from Daily Minimum Temperatures  

Science Conference Proceedings (OSTI)

A methodology has been developed to estimate winter design temperatures (temperatures exceeded a specific number of hours during the December through February winter season-an important design parameter in building construction) from synthetic ...

Nolan J. Doesken; Thomas B. McKee

1983-10-01T23:59:59.000Z

449

Monthly Temperature Observations for Uganda  

Science Conference Proceedings (OSTI)

The International Surface Temperature Initiative is a worldwide effort to locate weather observations, digitize them for public access, and attach provenance to them. As part of that effort, this study sought documents of temperature observations ...

John R. Christy

2013-10-01T23:59:59.000Z

450

Low Temperature Proton Conductivity  

NLE Websites -- All DOE Office Websites (Extended Search)

and and MEAs at Freezing Temperatures Thomas A. Zawodzinski, Jr. Case Western Reserve University Cleveland, Ohio 2 Freezing Fuel Cells: Impact on MEAS Below 0 o C *Transport processes/motions slow down: questions re: lower conductivity,water mobility etc *Residual water will have various physical effects in different portions of the MEA questions re: durability of components 3 3 'States' of Water in Proton Conductors ? Freezing (bulk), bound freezable, bound non freezable water states claimed based on DSC * Freezing water more mobile, allegedly important for high conductivity Analysis common for porous systems Does the presence of these states matter? Why? 4 'State of Water' in PEMs At T < 0 o C *'Liquid-like' water freezes *'Non-freezing' fraction: water of solvation at pore

451

Meson properties at finite temperature in a three flavor nonlocal chiral quark model with Polyakov loop  

SciTech Connect

We study the finite temperature behavior of light scalar and pseudoscalar meson properties in the context of a three-flavor nonlocal chiral quark model. The model includes mixing with active strangeness degrees of freedom, and takes care of the effect of gauge interactions by coupling the quarks with the Polyakov loop. We analyze the chiral restoration and deconfinement transitions, as well as the temperature dependence of meson masses, mixing angles and decay constants. The critical temperature is found to be T{sub c{approx_equal}}202 MeV, in better agreement with lattice results than the value recently obtained in the local SU(3) PNJL model. It is seen that above T{sub c} pseudoscalar meson masses get increased, becoming degenerate with the masses of their chiral partners. The temperatures at which this matching occurs depend on the strange quark composition of the corresponding mesons. The topological susceptibility shows a sharp decrease after the chiral transition, signalling the vanishing of the U(1){sub A} anomaly for large temperatures.

Contrera, G. A. [Physics Department, Comision Nacional de Energia Atomica, Av.Libertador 8250, (1429) Buenos Aires (Argentina); CONICET, Rivadavia 1917, 1033 Buenos Aires (Argentina); Dumm, D. Gomez [CONICET, Rivadavia 1917, 1033 Buenos Aires (Argentina); IFLP, Dpto. de Fisica, Universidad Nacional de La Plata, C.C. 67, (1900) La Plata (Argentina); Scoccola, Norberto N. [Physics Department, Comision Nacional de Energia Atomica, Av.Libertador 8250, (1429) Buenos Aires (Argentina); CONICET, Rivadavia 1917, 1033 Buenos Aires (Argentina); Universidad Favaloro, Solis 453, (1078) Buenos Aires (Argentina)

2010-03-01T23:59:59.000Z

452

Downward continuation of temperature gradients at MacFarlane's Hot Spring, Northern Nevada  

SciTech Connect

MacFarlane's Hot Spring is located on the eastern margin of the Black Rock Desert of northwest Nevada. Detailed temperature logs from thirty-eight shallow boreholes (500 feet) and six intermediate depth boreholes (1500-2000 feet) have been used to construct a temperature gradient contour map covering approximately 144 square miles, both within and adjacent to the geothermal area. These temperature gradients were then continued downward through a detailed conductivity model to complete the threedimensional thermal picture. The principal results are as follows: The maximum measured temperature is 178/sup 0/F at 2,000 feet, and the maximum projected temperatures at greater depths are not likely to exceed the 250-350/sup 0/F range. The area of hydrothermal activity is confined to the western front of a structural platform bounded by two roughly parallel normal faults. The anomaly is best explained in terms of a simple groundwater flow model. The groundwater flows west through the structural platform and ascends when it intersects the conduit provided by the fault. The faults on the eastern side of the platform permit recharge to the system.

Swanberg, C.A.; Bowers, R.L.

1982-10-01T23:59:59.000Z

453

Moored Observations of Precipitation Temperature  

Science Conference Proceedings (OSTI)

Direct observations of precipitation temperature were made from a surface buoy deployed for four months in the western Pacific warm pool. The observed rain droplet temperatures are equal to the wet-bulb temperature to within the measured wet-bulb ...

Steven P. Anderson; Alan Hinton; Robert A. Weller

1998-08-01T23:59:59.000Z

454

Battery system with temperature sensors  

SciTech Connect

A battery system to monitor temperature includes at least one cell with a temperature sensing device proximate the at least one cell. The battery system also includes a flexible member that holds the temperature sensor proximate to the at least one cell.

Wood, Steven J.; Trester, Dale B.

2012-11-13T23:59:59.000Z

455

Ginzburg-Landau phase diagram for dense matter with axial anomaly, strange quark mass, and meson condensation  

SciTech Connect

We discuss the phase structure of dense matter, in particular, the nature of the transition between hadronic and quark matter. Calculations within a Ginzburg-Landau approach show that the axial anomaly can induce a critical point in this transition region. This is possible because in three-flavor quark matter with instanton effects a chiral condensate can be added to the color-flavor locked phase without changing the symmetries of the ground state. In (massless) two-flavor quark matter such a critical point is not possible since the corresponding color superconductor (2SC) does not break chiral symmetry. We study the effects of a nonzero but finite strange quark mass which interpolates between these two cases. Since at ultrahigh density the first reaction of the color-flavor locked phase to a nonzero strange quark mass is to develop a kaon condensate, we extend previous Ginzburg-Landau studies by including such a condensate. We discuss the fate of the critical point systematically and show that the continuity between hadronic and quark matter can be disrupted by the onset of a kaon condensate. Moreover, we identify the mass terms in the Ginzburg-Landau potential which are needed for the 2SC phase to occur in the phase diagram.

Schmitt, Andreas; Stetina, Stephan [Institut fuer Theoretische Physik, Technische Universitaet Wien, 1040 Vienna (Austria); Tachibana, Motoi [Department of Physics, Saga University, Saga 840-8502 (Japan)

2011-02-15T23:59:59.000Z

456

Effect of r averaging on Chiral Anomaly in Lattice QCD with Wilson Fermion: Finite volume and cutoff effects  

E-Print Network (OSTI)

We demonstrate the effectiveness of averaging over the Wilson parameter r (which has been proposed earlier) in removing the cutoff effects of naive Wilson fermions in both the anomaly term and the pseudoscalar density term in the flavor singlet axial Ward identity at O(g^2) involving slowly varying background gauge fields. We show that it is the physical fermion contribution which is largely influenced by the r averaging. We have studied the possible interplay between finite size and cutoff effects by investigating in detail naive, O(a) improved and OStm Wilson fermion cases for a range of volumes and lattice fermion mass (am). For naive Wilson fermions r averaging is shown to remove the effects of the interplay. We have shown that for the pseudoscalar density term to O (g^2) the lattice result differs from the continuum result by exhibiting considerable am dependence which appears to be a manifestation of cutoff effects with naive Wilson fermion. The pseudoscalar density term to O(g^2) is shown to be almost independent of am when r-averaging is performed.

Asit K. De; A. Harindranath; Santanu Mondal

2011-05-04T23:59:59.000Z

457

Minimum Temperatures, Diurnal Temperature Ranges, and Temperature Inversions in Limestone Sinkholes of Different Sizes and Shapes  

Science Conference Proceedings (OSTI)

Air temperature data from five enclosed limestone sinkholes of various sizes and shapes on the Hetzkogel Plateau near Lunz, Austria (1300 m MSL), have been analyzed to determine the effect of sinkhole geometry on temperature minima, diurnal ...

C. D. Whiteman; T. Haiden; B. Pospichal; S. Eisenbach; R. Steinacker

2004-08-01T23:59:59.000Z

458

Quantum Chemistry at Finite Temperature  

E-Print Network (OSTI)

In this article, we present emerging fields of quantum chemistry at finite temperature. We discuss its recent developments on both experimental and theoretical fronts. First, we describe several experimental investigations related to the temperature effects on the structures, electronic spectra, or bond rupture forces for molecules. These include the analysis of the temperature impact on the pathway shifts for the protein unfolding by atomic force microscopy (AFM), the temperature dependence of the absorption spectra of electrons in solvents, and the temperature influence over the intermolecular forces measured by the AFM. On the theoretical side, we review advancements made by the author in the coming fields of quantum chemistry at finite temperature. Starting from the Bloch equation, we have derived the sets of hierarchy equations for the reduced density operators in both canonical and grand canonical ensembles. They provide a law according to which the reduced density operators vary in temperature for the identical and interacting many-body systems. By taking the independent particle approximation, we have solved the equations in the case of a grand canonical ensemble, and obtained an energy eigenequation for the molecular orbitals at finite temperature. The explicit expression for the temperature-dependent Fock operator is also given. They form a mathematical foundation for the examination of the molecular electronic structures and their interplay with finite temperature. Moreover, we clarify the physics concerning the temperature effects on the electronic structures or processes of the molecules, which is crucial for both theoretical understanding and computation. Finally, ....

Liqiang Wei

2006-05-23T23:59:59.000Z

459

High temperature interfacial superconductivity  

DOE Patents (OSTI)

High-temperature superconductivity confined to nanometer-scale interfaces has been a long standing goal because of potential applications in electronic devices. The spontaneous formation of a superconducting interface in bilayers consisting of an insulator (La.sub.2CuO.sub.4) and a metal (La.sub.1-xSr.sub.xCuO.sub.4), neither of which is superconducting per se, is described. Depending upon the layering sequence of the bilayers, T.sub.c may be either .about.15 K or .about.30 K. This highly robust phenomenon is confined to within 2-3 nm around the interface. After exposing the bilayer to ozone, T.sub.c exceeds 50 K and this enhanced superconductivity is also shown to originate from a 1 to 2 unit cell thick interfacial layer. The results demonstrate that engineering artificial heterostructures provides a novel, unconventional way to fabricate stable, quasi two-dimensional high T.sub.c phases and to significantly enhance superconducting properties in other superconductors. The superconducting interface may be implemented, for example, in SIS tunnel junctions or a SuFET.

Bozovic, Ivan (Mount Sinai, NY); Logvenov, Gennady (Port Jefferson Station, NY); Gozar, Adrian Mihai (Port Jefferson, NY)

2012-06-19T23:59:59.000Z

460

Subseasonal Variation in ENSO-Related East Asian Rainfall Anomalies during Summer and Its Role in Weakening the Relationship between the ENSO and Summer Rainfall in Eastern China since the Late 1970s  

Science Conference Proceedings (OSTI)

The findings of the study reported in this paper show that, during ENSO decaying summers, rainfall and circulation anomalies exhibit clear subseasonal variation. Corresponding to a positive (negative) December–February (DJF) Niño-3.4 index, a ...

Hong Ye; Riyu Lu

2011-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Low-level convergence and its role in convective intensity and frequency over the Houston lightning and rainfall anomaly  

E-Print Network (OSTI)

An increase in the amount of lightning and rainfall over the Houston area, compared to the surrounding rural areas, has been well documented in previous studies. The placement of a Shared Mobile Atmospheric Research and Teaching Radar (SMART-R) in the Houston area during the summer season of 2005 presented a unique opportunity to investigate the role of boundary-layer convergence in modulating convective frequency and intensity and, thereby, likely causing the rainfall and lightning anomalies. The role of the urban heat island (UHI) and the sea-breeze, as a source of low-level convergence leading to enhanced convection over Houston, was examined. Hourly average dual-Doppler wind and convergence maps were created on 1 X 1 km grids for an eleven-week period. By using these images along with average lightning, rainfall, and reflectivity for a large Houston-centered domain, it was possible to discern a correlation between low-level convergence and convection. Also, past findings of enhancement in lightning and rainfall over Houston and downwind of Houston were validated. High convergence levels for the Houston area in the mid-morning were followed closely by a peak in convection in the early afternoon. The enhancement of rainfall and lightning over and downwind of downtown was found to be primarily from a large increase in frequency of deep convective events when compared to the surrounding domain. Also, it was found that UHI, rather than sea-breeze, was likely the primary causative mechanism in the development of convection over the Houston area because of the lack of deep convection in areas equally affected by the sea-breeze and the timing of the convection compared to time of peak sea-breeze. An area of weaker enhancement south of Houston, not discussed in previous studies, was found to be present, possibly from the interactions between the bay-breeze off of the Galveston Bay and the seabreeze.

McNear, Veronica Ann

2003-05-01T23:59:59.000Z

462

An Analysis of the Large-Scale Climate Anomalies Associated with the Snowstorms Affecting China in January 2008  

Science Conference Proceedings (OSTI)

Extraordinarily frequent and long-lasting snowstorms affected China in January 2008, causing above-normal precipitation, below-normal temperature, and severe icing conditions over central–southern China. These snowstorms were closely linked to ...

Min Wen; Song Yang; Arun Kumar; Peiqun Zhang

2009-03-01T23:59:59.000Z

463

High-temperature ceramic receivers  

DOE Green Energy (OSTI)

An advanced ceramic dome cavity receiver is discussed which heats pressurized gas to temperatures above 1800/sup 0/F (1000/sup 0/C) for use in solar Brayton power systems of the dispersed receiver/dish or central receiver type. Optical, heat transfer, structural, and ceramic material design aspects of the receiver are reported and the development and experimental demonstration of a high-temperature seal between the pressurized gas and the high-temperature silicon carbide dome material is described.

Jarvinen, P. O.

1980-01-01T23:59:59.000Z

464

Low temperature phase transformations in 4-cyano-4'-pentylbiphenyl (5CB) filled by multiwalled carbon nanotubes  

E-Print Network (OSTI)

The effects of multiwalled carbon nanotubes (NTs) on low-temperature phase transformations in 5CB were studied by means of differential scanning calorimetry (DSC), low-temperature photoluminescence and measurements of electrical conductivity. The concentration of NTs was varied within 0-1% wt. The experimental data, obtained for pure 5CB by DSC and measurements of photoluminescence in the heating mode, evidenced the presence of two crystallization processes at T->229 K and T->262 K, which correspond to C1a->C1b, and C1b->C2 phase transformations. Increase of temperature T from 10 K to 229 K provoked the red shift of photoluminescence spectral band that was explained by flattening of 5CB molecule conformation. Moreover, the photoluminescence data allow to conclude that crystallisation at T=229 K results in conformation transition to non-planar 5CB structure characteristic to ideal crystal. The non-planar conformations were dominating in nematic phase, i.e., at T>297 K. Electrical conductivity data for NTs-5CB composites revealed supplementary anomaly inside the stable crystalline phase C2, identified earlier in the temperature range 229 K-296.8 K. It can reflect the influence of phase transformation of 5CB in interfacial layers on the transport of charge carriers between NTs.

N. Lebovka; V. Melnyk; Ye. Mamunya; G. Klishevich; A. Goncharuk; N. Pivovarova

2013-03-03T23:59:59.000Z

465

High Temperature and Electrical Properties  

Science Conference Proceedings (OSTI)

Mar 5, 2013... and Nanomaterials: High Temperature and Electrical Properties ... thermomechanical (or in cyclic power) loading of electronic devices is an ...

466

Ultra High Temperature Ceramic Composites  

Science Conference Proceedings (OSTI)

Oct 9, 2012 ... These ceramics, often combined with 20-30% SiC, have been studied extensively in monolithic form, demonstrating excellent high-temperature ...

467

Humidity, Temperature, and Voltage (Presentation)  

SciTech Connect

An update is given on the work of the PV Quality Assurance Task Force; Group 3: studying the effects of humidity, temperature, and voltage bias.

Wohlgemuth, J.

2012-03-01T23:59:59.000Z

468

Wet-Bulb Temperature from Relative Humidity and Air Temperature  

Science Conference Proceedings (OSTI)

An equation is presented for wet-bulb temperature as a function of air temperature and relative humidity at standard sea level pressure. It was found as an empirical fit using gene-expression programming. This equation is valid for relative ...

Roland Stull

2011-11-01T23:59:59.000Z

469

Microneuromas Rod anomalies  

E-Print Network (OSTI)

and synaptic remodeling are initiated. Synaptic remodeling is evidenced by neuropil arising from new neurites. Distal migration of MC nuclei, MC hypertrophy and disorganization of the inner nuclear layer, including Center, Salt Lake City, UT · NIH EY02576 & Research to Prevent Blindness DK Vaughan · Biology, University

Marc, Robert E.

470

Proton Size Anomaly  

SciTech Connect

A measurement of the Lamb shift in muonic hydrogen yields a charge radius of the proton that is smaller than the CODATA value by about 5 standard deviations. We explore the possibility that new scalar, pseudoscalar, vector, and tensor flavor-conserving nonuniversal interactions may be responsible for the discrepancy. We consider exotic particles that, among leptons, couple preferentially to muons and mediate an attractive nucleon-muon interaction. We find that the many constraints from low energy data disfavor new spin-0, spin-1, and spin-2 particles as an explanation.

Barger, Vernon [Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States); Chiang, Cheng-Wei [Department of Physics and Center for Mathematics and Theoretical Physics, National Central University, Chungli, Taiwan 32001 (China); Institute of Physics, Academia Sinica, Nankang, Taipei 11925 (China); Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States); Keung, Wai-Yee [Department of Physics, University of Illinois, Chicago, Illinois 60607 (United States); Marfatia, Danny [Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045 (United States); Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States)

2011-04-15T23:59:59.000Z

471

Earth flyby anomalies  

Science Conference Proceedings (OSTI)

In the planet-centric system, a spacecraft should have the same initial and final energies, even though its energy and angular momentum will change in the barycenter of the solar system. However, without explanation, a number of earth flybys have yielded small energy changes.

Nieto, Michael Martin [Los Alamos National Laboratory; Anderson, John D [PROPULSION LAB.

2009-01-01T23:59:59.000Z

472

Temperature dependency in UDSM process  

Science Conference Proceedings (OSTI)

In low power UDSM process the use of reduced supply voltage with high threshold voltages may reverse the temperature dependence of designs. In this paper we propose a model to define the true worst Process, Voltage and Temperature conditions to be used ...

B. Lasbouygues; Robin Wilson; Nadine Azémard; Philippe Maurine

2005-09-01T23:59:59.000Z

473

High temperature turbine engine structure  

DOE Patents (OSTI)

A high temperature turbine engine includes a hybrid ceramic/metallic rotor member having ceramic/metal joint structure. The disclosed joint is able to endure higher temperatures than previously possible, and aids in controlling heat transfer in the rotor member.

Boyd, Gary L. (Tempe, AZ)

1990-01-01T23:59:59.000Z

474

ARM - Measurement - Soil surface temperature  

NLE Websites -- All DOE Office Websites (Extended Search)

surface temperature surface temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Soil surface temperature The temperature of the soil measured near the surface. Categories Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AMC : Ameriflux Measurement Component CO2FLX : Carbon Dioxide Flux Measurement Systems SOIL : Soil Measurement from the SGP SWATS : Soil Water and Temperature System MET : Surface Meteorological Instrumentation

475

ARM - Measurement - Surface skin temperature  

NLE Websites -- All DOE Office Websites (Extended Search)

skin temperature skin temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Surface skin temperature The radiative surface skin temperature, from an IR thermometer measuring the narrowband radiating temperature of the ground surface in its field of view. Categories Radiometric, Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments IRT : Infrared Thermometer MFRIRT : Multifilter Radiometer and Infrared Thermometer External Instruments

476

Surface temperature | OpenEI  

Open Energy Info (EERE)

Surface temperature Surface temperature Dataset Summary Description This dataset, made available by the UK Department of Energy and Climate Change (DECC), shows the difference between the yearly central England temperature for years 1772 through 2009 and the 1961 - 1990 baseline (1961 - 1990 Central England average after smoothing). It also shows the difference between average global temperature and 1961 - 1990 average after smoothing. The original source of the data is the Met Office. Source UK Department of Energy and Climate Change (DECC) Date Released March 12th, 2010 (4 years ago) Date Updated Unknown Keywords climate change Surface temperature UK weather Data application/vnd.ms-excel icon 1 Excel file: Surface Temps, 1772 - 1990 (xls, 1.3 MiB) Quality Metrics Level of Review Some Review

477

Method for measuring surface temperature  

DOE Patents (OSTI)

The present invention relates to a method for measuring a surface temperature using is a fluorescent temperature sensor or optical thermometer. The sensor includes a solution of 1,3-bis(1-pyrenyl)propane within a 1-butyl-1-1-methyl pyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquid solvent. The 1,3-bis(1-pyrenyl)propane remains unassociated when in the ground state while in solution. When subjected to UV light, an excited state is produced that exists in equilibrium with an excimer. The position of the equilibrium between the two excited states is temperature dependent.

Baker, Gary A. (Los Alamos, NM); Baker, Sheila N. (Los Alamos, NM); McCleskey, T. Mark (Los Alamos, NM)

2009-07-28T23:59:59.000Z

478

Interdecadal Variability of the Relationship between the Indian Ocean Zonal Mode and East African Coastal Rainfall Anomalies  

Science Conference Proceedings (OSTI)

The variance of the rainfall during the October–November–December (OND) “short rain” season along the coast in Kenya and Tanzania correlates strongly with sea surface temperature (SST) in the Indian Ocean between 1950 and 1999. A zonal pattern of ...

Christina Oelfke Clark; Peter J. Webster; Julia E. Cole

2003-02-01T23:59:59.000Z

479

High temperature structural insulating material  

DOE Patents (OSTI)

A high temperature structural insulating material useful as a liner for cylinders of high temperature engines through the favorable combination of high service temperature (above about 800/sup 0/C), low thermal conductivity (below about 0.2 W/m/sup 0/C), and high compressive strength (above about 250 psi). The insulating material is produced by selecting hollow ceramic beads with a softening temperature above about 800/sup 0/C, a diameter within the range of 20-200 ..mu..m, and a wall thickness in the range of about 2 to 4 ..mu..m; compacting the beads and a compatible silicate binder composition under pressure and sintering conditions to provide the desired structural form with the structure having a closed-cell, compact array of bonded beads.

Chen, W.Y.

1984-07-27T23:59:59.000Z

480

temperatures | OpenEI Community  

Open Energy Info (EERE)

temperatures temperatures Home Graham7781's picture Submitted by Graham7781(1992) Super contributor 18 January, 2013 - 15:46 U.S. Global Change Research Program publishes "National Climate Assessment" report for United States climate change drought OpenEI sea level rise temperatures U.S. Global Climate Change program The U.S. Global Change Research Program, established under the Department of Commerce in 2010, and partnered with NOAA, released an extensive National Climate Assessment report, projecting future climate changes in the United States under different scenarios. The 1,200 page report highlights some rather grim findings about the future of climate change. Here are 5 of the more disconcerting graphics from the report: 1. U.S. Average Temperatures Syndicate content

Note: This page contains sample records for the topic "temperature anomalies 1850-2012" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

ARM - Measurement - Sea surface temperature  

NLE Websites -- All DOE Office Websites (Extended Search)

govMeasurementsSea surface temperature govMeasurementsSea surface temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Sea surface temperature The temperature of sea water near the surface. Categories Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. External Instruments ECMWF : European Centre for Medium Range Weather Forecasts Model Data Field Campaign Instruments ECMWF : European Centre for Medium Range Weather Forecasts Model Data MIRAI : JAMSTEC Research Vessel Mirai

482

A Synthesis of Antarctic Temperatures  

Science Conference Proceedings (OSTI)

Monthly surface air temperatures from land surface stations, automatic weather stations, and ship/buoy observations from the high-latitude Southern Hemisphere are synthesized into gridded analyses at a resolution appropriate for applications ...

William L. Chapman; John E. Walsh

2007-08-01T23:59:59.000Z

483

High Temperature Optical Gas Sensing  

This series of inventions addresses harsh environment sensing at temperatures above approximately 400-500oC using novel sensing materials that are compatible with optical sensing platforms as well as more conventional resistive platforms. The sensors ...

484

On the USCRN Temperature System  

Science Conference Proceedings (OSTI)

In 2004 a new aspirated surface air temperature system was officially deployed nationally in the U.S. Climate Reference Network (USCRN) commissioned by the National Oceanic and Atmospheric Administration. The primary goal of the USCRN is to ...

K. G. Hubbard; X. Lin; C. B. Baker

2005-07-01T23:59:59.000Z

485

Extremely Low Temperature | Open Energy Information  

Open Energy Info (EERE)

Extremely Low Temperature Extremely Low Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: Extremely Low Temperature Dictionary.png Extremely Low Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid less than 100°C is considered to to be "extremely low temperature." Note: Sanyal classified fluids of these temperatures to be "non-electrical grade" in 2005, but electricity has since been generated from these

486

High temperature thermometric phosphors for use in a temperature sensor  

SciTech Connect

A high temperature phosphor consists essentially of a material having the general formula LuPO.sub.4 :Dy.sub.(x),Eu.sub.(y), wherein: 0.1 wt %.ltoreq.x.ltoreq.20 wt % and 0.1 wt %.ltoreq.y.ltoreq.20 wt %. The high temperature phosphor is in contact with an article whose temperature is to be determined. The article having the phosphor in contact with it is placed in the environment for which the temperature of the article is to be determined. The phosphor is excited by a laser causing the phosphor to fluoresce. The emission from the phosphor is optically focused into a beam-splitting mirror which separates the emission into two separate emissions, the emission caused by the dysprosium dopant and the emission caused by the europium dopent. The separated emissions are optically filtered and the intensities of the emission are detected and measured. The ratio of the intensity of each emission is determined and the temperature of the article is calculated from the ratio of the intensities of the separate emissions.

Allison, Stephen W. (Knoxville, TN); Cates, Michael R. (Oak Ridge, TN); Boatner, Lynn A. (Oak Ridge, TN); Gillies, George T. (Earlysville, VA)

1998-01-01T23:59:59.000Z

487

Apparatus and method for high temperature viscosity and temperature measurements  

DOE Patents (OSTI)

A probe for measuring the viscosity and/or temperature of high temperature liquids, such as molten metals, glass and similar materials comprises a rod which is an acoustical waveguide through which a transducer emits an ultrasonic signal through one end of the probe, and which is reflected from (a) a notch or slit or an interface between two materials of the probe and (b) from the other end of the probe which is in contact with the hot liquid or hot melt, and is detected by the same transducer at the signal emission end. To avoid the harmful effects of introducing a thermally conductive heat sink into the melt, the probe is made of relatively thermally insulative (non-heat-conductive) refractory material. The time between signal emission and reflection, and the amplitude of reflections, are compared against calibration curves to obtain temperature and viscosity values.

Balasubramaniam, Krishnan (Mississippi State, MS); Shah, Vimal (Houston, TX); Costley, R. Daniel (Mississippi State, MS); Singh, Jagdish P. (Mississippi State, MS)

2001-01-01T23:59:59.000Z

488

Ultra High Temperature | Open Energy Information  

Open Energy Info (EERE)

Ultra High Temperature Ultra High Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: Ultra High Temperature Dictionary.png Ultra High Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid greater than 300°C is considered by Sanyal to be "ultra high temperature". "Such reservoirs are characterized by rapid development of steam saturation in the reservoir and steam fraction in the mobile fluid phase upon

489

Very Low Temperature | Open Energy Information  

Open Energy Info (EERE)

Very Low Temperature Very Low Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: Very Low Temperature Dictionary.png Very Low Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid between 100°C and 150°C is considered by Sanyal to be "very low temperature." "The mobile fluid phase in these reservoirs is liquid water. Very few power projects have been developed in the U.S. based on geothermal resources in

490

High temperature nuclear gas turbine  

SciTech Connect

Significance of gas turbine cycle, process of the development of gas turbines, cycle and efficiency of high-temperature gas turbines, history of gas turbine plants and application of nuclear gas turbines are described. The gas turbines are directly operated by the heat from nuclear plants. The gas turbines are classified into two types, namely open cycle and closed cycle types from the point of thermal cycle, and into two types of internal combustion and external combustion from the point of heating method. The hightemperature gas turbines are tbe type of internal combustion closed cycle. Principle of the gas turbines of closed cycle and open cycle types is based on Brayton, Sirling, and Ericsson cycles. Etficiency of the turbines is decided only by pressure ratio, and is independent of gas temperature. An example of the turbine cycle for the nuclear plant Gestacht II is explained. The thermal efficiency of that plant attains 37%. Over the gas temperature of about 750 deg C, the thermal efficiency of the gas turbine cycle is better than that of steam turbine cycle. As the nuclear fuel, coated particle fuel is used, and this can attain higher temperature of core outlet gas. Direct coupling of the nuclear power plants and the high temperature gas turbines has possibility of the higher thermal efficiency. (JA)

Kurosawa, A.

1973-01-01T23:59:59.000Z

491

Temperature & Nuclear Fusion 4 October 2011  

E-Print Network (OSTI)

Temperature & Nuclear Fusion 4 October 2011 Goals · Review temperature in stars · Practice using the important energy scales for nuclear fusion Temperature 1. For each relation we regularly use in class temperature. #12;temperature & nuclear fusion 2 Nuclear Fusion 2. There are a few different energy scales

Militzer, Burkhard

492

Thermal disconnect for high-temperature batteries  

DOE Patents (OSTI)

A new type of high temperature thermal disconnect has been developed to protect electrical and mechanical equipment from damage caused by operation at extreme temperatures. These thermal disconnects allow continuous operation at temperatures ranging from 250.degree. C. to 450.degree. C., while rapidly terminating operation at temperatures 50.degree. C. to 150.degree. C. higher than the continuous operating temperature.

Jungst, Rudolph George (Albuquerque, NM); Armijo, James Rudolph (Albuquerque, NM); Frear, Darrel Richard (Austin, TX)

2000-01-01T23:59:59.000Z

493

Joint Institute for High Temperatures  

National Nuclear Security Administration (NNSA)

Joint Institute for High Temperatures of Russian Academy of Sciences Moscow Institute of Physics and Technology Extended title Extended title Excited state of warm dense matter or Exotic state of warm dense matter or Novel form of warm dense matter or New form of plasma Three sources of generation similarity: solid state density, two temperatures: electron temperature about tens eV, cold ions keep original crystallographic positions, but electron band structure and phonon dispersion are changed, transient but steady (quasi-stationary for a short time) state of non-equilibrium, uniform plasmas (no reference to non-ideality, both strongly and weakly coupled plasmas can be formed) spectral line spectra are emitted by ion cores embedded in plasma environment which influences the spectra strongly,

494

High Temperature Optical Gas Sensing  

NLE Websites -- All DOE Office Websites (Extended Search)

Optical Gas Sensing Optical Gas Sensing Opportunity Research is active on optical sensors integrated with advanced sensing materials for high temperature embedded gas sensing applications. Patent applications have been filed for two inventions in this area and several other methods are currently under development. These technologies are available for licensing and/or further collaborative research from the U.S. Department of Energy's National Energy Technology Laboratory (NETL). Organizations or individuals with capabilities in optical sensor packaging for harsh environment and high temperature applications are encouraged to contact NETL to explore potential collaborative opportunities. Overview Contact NETL Technology Transfer Group techtransfer@netl.doe.gov

495

High temperature superconductor current leads  

DOE Patents (OSTI)

An electrical lead having one end for connection to an apparatus in a cryogenic environment and the other end for connection to an apparatus outside the cryogenic environment. The electrical lead includes a high temperature superconductor wire and an electrically conductive material distributed therein, where the conductive material is present at the one end of the lead at a concentration in the range of from 0 to about 3% by volume, and at the other end of the lead at a concentration of less than about 20% by volume. Various embodiments are shown for groups of high temperature superconductor wires and sheaths.

Hull, John R. (Hinsdale, IL); Poeppel, Roger B. (Glen Ellyn, IL)

1995-01-01T23:59:59.000Z

496

Room temperature terahertz polariton emitter  

SciTech Connect

Terahertz (THz) range electroluminescence from intersubband polariton states is observed in the ultra strong coupling regime, where the interaction energy between the collective excitation of a dense electron gas and a photonic mode is a significant portion of the uncoupled excitation energy. The polariton's increased emission efficiency along with a parabolic electron confinement potential allows operation up to room temperature in a nonresonant pumping scheme. This observation of room temperature electroluminescence of an intersubband device in the THz range is a promising proof of concept for more powerful THz sources.

Geiser, Markus; Scalari, Giacomo; Castellano, Fabrizio; Beck, Mattias; Faist, Jerome [Institute for Quantum Electronics, ETH Zurich, Wolfgang-Pauli-Strasse 16, 8093 Zurich (Switzerland)

2012-10-01T23:59:59.000Z

497

Asymetric change of daily temperature range: Proceedings  

SciTech Connect

This report is a compilation of abstracts of papers presented at the MINIMAX workshop. Topics include; temperature fluxes, influence of clouds on temperature, anthropogenic influences on temperature flux, and carbon dioxide and aerosol induced greenhouse effect.

Kukla, G. [ed.] [Columbia Univ., Palisades, NY (United States). Lamont-Doherty Earth Observatory; Karl, T.R. [ed.] [National Climatic Data Center, Asheville, NC (United States); Riches, M.R. [ed.] [USDOE, Washington, DC (United States)

1994-04-01T23:59:59.000Z

498

Temperature dependence of the indentation size effect  

E-Print Network (OSTI)

The influence of temperature on the indentation size effect is explored experimentally. Copper is indented on a custom-built high-temperature nanoindenter at temperatures between ambient and 200 °C, in an inert atmosphere ...

Franke, Oliver

499

Test of the Fixed Anvil Temperature Hypothesis  

Science Conference Proceedings (OSTI)

The fixed anvil temperature (FAT) hypothesis is examined based on the Aqua Moderate Resolution Imaging Spectroradiometer (MODIS)-based cloud-top temperature (CTT) in conjunction with the tropical atmospheric profiles and sea surface temperature (...

Yue Li; Ping Yang; Gerald R. North; Andrew Dessler

2012-07-01T23:59:59.000Z

500

High-temperature plasma physics  

SciTech Connect

Both magnetic and inertial confinement research are entering the plasma parameter range of fusion reactor interest. This paper reviews the individual and common technical problems of these two approaches to the generation of thermonuclear plasmas, and describes some related applications of high-temperature plasma physics.

Furth, H.P.

1988-03-01T23:59:59.000Z