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Title: Calibration and Recovery of Nuclear Test Seismic Ground-Motion Data from the Leo Brady Seismic Network.


Abstract not provided.

Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation (NA-20)
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Resource Type:
Resource Relation:
Conference: Proposed for presentation at the 2016 American Geophysical Union (AGU) Fall Meeting held December 12-16, 2016 in San Francisco, CA.
Country of Publication:
United States

Citation Formats

Young, Brian, and Abbott, Robert. Calibration and Recovery of Nuclear Test Seismic Ground-Motion Data from the Leo Brady Seismic Network.. United States: N. p., 2017. Web.
Young, Brian, & Abbott, Robert. Calibration and Recovery of Nuclear Test Seismic Ground-Motion Data from the Leo Brady Seismic Network.. United States.
Young, Brian, and Abbott, Robert. Sat . "Calibration and Recovery of Nuclear Test Seismic Ground-Motion Data from the Leo Brady Seismic Network.". United States. doi:.
title = {Calibration and Recovery of Nuclear Test Seismic Ground-Motion Data from the Leo Brady Seismic Network.},
author = {Young, Brian and Abbott, Robert},
abstractNote = {Abstract not provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Apr 01 00:00:00 EDT 2017},
month = {Sat Apr 01 00:00:00 EDT 2017}

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  • The Leo Brady Seismic Net (LBSN) has been used to estimate seismic yields on US nuclear explosion tests for over 30 years. One of the concerns that Non-Proliferation Experiment (NPE) addresses is the yield equivalence between a large conventional explosion and a nuclear explosion. The LSBN consists of five stations that surround the Nevada Test Site (NTS). Because of our previous experience in measuring nuclear explosion yields, we operated this net to record NPE signals. Comparisons were made with 9 nuclear tests in the same volcanic tuff medium and within an 800 m range of the NPE source. The resultingmore » seismic yield determined by each nuclear test ranged from 1.3 to 2.2 kT. Using the same techniques in determining nuclear explosion yields, the 1 kT NPE was measured at 1.7 kT nuclear equivalent yield with a standard deviation of 16%. The individual stations show a non-symmetric radiation pattern with more energy transmitted to the north and south. Comparisons with an nuclear event does not sow any obvious differences between the two tests.« less
  • The Lawrence Livermore Laboratory seismic net was upgraded by installing two horizontal seismometers at each of the four LLL stations. These seismometers record radial and transverse ground motion from underground nuclear explosions at the Nevada Test Site and complement the vertical components which were installed several years ago. Each station now monitors three orthogonal components of ground velocity over a broad frequency band.
  • A problem unique to the location of a nuclear waste repository adjacent to the Nevada Test Site is the assessment of seismic ground motion from potential underground nuclear explosion tests for use in the facility design. Although the problem is unique, it is not new. For more than 30 years the Department of Energy and its predecessor, the Atomic Energy Commission, have maintained a program for predicting and monitoring vibratory ground motion from underground nuclear detonations for use in assuring the safety of structures in the surrounding region. Over the course of the monitoring effort, ground motion measurements have beenmore » collected at ranges from less than 1 km to more than 100 km for hundreds of nuclear explosions covering yields from less than 1 to 1,000 kilotons in a variety of emplacement media. The ground motion prediction scheme which has evolved from this program utilizes a combination of empirical and analytical elements. This scheme takes into account (1) source factors including explosion yield, depth of burial, physical medium properties and geometrical configuration of multiples, (2) transmission path factors including distance, crustal structure and propagation properties such as attenuation, and (3) recording site response based on local structure, soil properties and seismic wave type. Prediction relations based on this past experience can be used to estimate vibratory ground motion and an associated uncertainty at the Yucca Mountain site from potential future nuclear explosions in different test areas at NTS.« less
  • In this report we describe the data sets used to evaluate ground motion hazards in Las Vegas from nuclear tests at the Nevada Test Site. This analysis is presented in Rodgers et al. (2005, 2006) and includes 13 nuclear explosions recorded at the John Blume and Associates network, the Little Skull Mountain earthquake and a temporary deployment of broadband station in Las Vegas. The data are available in SAC format on CD-ROM as an appendix to this report.
  • The objective of the research is to develop an operational method to convert airborne spectral radiance data to reflectance using a number of well-characterized ground calibration sites located around the UK. The study is in three phases. First, a pilot study has been conducted at a disused airfield in southern England to test the feasibility of the {open_quote}empirical line{close_quote} method of sensor calibration. The second phase is developing methods to predict temporal changes in the bidirectional reflectance of ground calibration sites. The final phase of the project will look at methods to extend such calibrations spatially. This paper presents somemore » results from the first phase of this study. The viability of the empirical line method of correction is shown to depend upon the use of ground targets whose in-band reflectance encompasses that of the targets of interest in the spectral band(s) concerned. The experimental design for the second phase of the study, in which methods to predict temporal trends in the bidirectional reflectance of these sites will be developed, is discussed. Finally, it is planned to develop an automated method of searching through Landsat TM data for the UK to identify a number of candidate ground calibration sites for which the model can be tested. 11 refs., 5 figs., 5 tabs.« less