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Title: Bio for Barbara Jennings.


Abstract not provided.

Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Resource Type:
Resource Relation:
Conference: Proposed for presentation at the First International Workshop on Physics-based Risk Assessment of Potentially Hazadous Asteroids (PHAs) held July 7-9, 2015 in Moffet Federal Airfield, California.
Country of Publication:
United States

Citation Formats

Jennings, Barbara J. Bio for Barbara Jennings.. United States: N. p., 2015. Web.
Jennings, Barbara J. Bio for Barbara Jennings.. United States.
Jennings, Barbara J. 2015. "Bio for Barbara Jennings.". United States. doi:.
title = {Bio for Barbara Jennings.},
author = {Jennings, Barbara J.},
abstractNote = {Abstract not provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2015,
month = 3

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  • Historically, salt domes have been the primary target of oil and gas exploration in the Texas and Louisiana Gulf Coast. In south Louisiana, the 89 piercement salt dome fields discovered since 1901 have produced 6,492,462,685 bbl of oil and condensate, representing approximately 60% of all oil and condensate produced in south Louisiana. Because of the tremendous volume of oil already extracted, there may be doubt about finding significant reserves on these features in the future. A current review of Jennings salt dome, the first Louisiana oil field, however, suggests that south Louisiana piercement domes still have large undiscovered reserves. Jenningsmore » dome, which has produced continuously since its discovery in 1901, has produced, as of 1985, 115 million bbl of oil and condensate. Its long and active exploration history is representative of many piercement domes in south Louisiana. A combination of characteristics explain why Jennings, as well as other domes, continues to be the focus of major exploration efforts. Piercement salt domes are generally complex both stratigraphically and structurally because of their geologic origin. Prolific high-angle faulting coupled with depositional unconformities and rapid stratigraphic changes make it difficult to determine accurately the precise nature and extent of existing hydrocarbon traps. Additional, the occurrence of multiple sand reservoirs and outstanding recovery rates of oil in place result in areally small reservoirs that contain substantial reserves.« less
  • For about a month during the fall of 1985, as part of the SCCAMP project, non-methane hydrocarbons and trace gases were measured at a coastal site near Pt. Conception on the California coast (Government Camp). The background levels of these hydrocarbons affect atmospheric chemistry on regional scales and may influence the global cycles of trace gases. Moreover, hydrocarbons can be used as tracers of natural oil and gas emissions, and biological or industrial activities. The authors evaluated the data to determine the background levels of total non-methane hydrocarbons (TNMHCs, NMHCs) and their concentrations arising from the transport of polluted airmore » from urban areas or from nearby regions of oil seeps. They present their findings in this paper.« less
  • The shape composition of detrital quartz grains from the medium sand fraction of 61 samples collected from the eastern and central Santa Barbara Littoral Cell was determined using Fourier analysis. Nine sample sets were obtained by various organizations from the shoreface (0 to [minus]9 m MLLW) of beaches, rivers, coastal cliffs and dunes as well as the inner continental shelf ([minus]16 to [minus]23 m MLLW) between June, 1969 and March, 1992. The Ventura and Santa Clara River samples are statistically homogeneous with respect to quartz grain shape. Littoral and inner shelf samples from the Ventura area are composed principally ofmore » resedimented sand from the Ventura and Santa Clara Rivers, but also contain sand from an unidentified source exposed on the adjacent inner shelf. No statistically significant change in the grain-shape composition of upper shoreface (0 m MLLW) samples in the Ventura area occurs within the observed sample sets, which represent a period of 23 years. Seasonal variation within the Ventura area is marked by an increase in the abundance of more elongate grains on the upper shoreface during the summer months, and a decrease in the abundance of such grains during the oceanographic winter. The increase in more elongate grains during the summer most likely reflects the onshore transport of shelf-derived grains through ridge and runnel systems, whereas the decrease in the abundance of such grains reflects mixing with pre-existing backshore sand containing more equate grains during winter storms. The selective transport of more elongate grains is evidenced by the enrichment of such grains within Ventura Harbor ([minus]7 m MLLW).« less
  • Deep basinal rocks of the Monterey Formation can be allocated to different depositional environments based on an integration of bedding, stacking patterns of facies, lithology, biofacies, and inorganic and organic chemistry. These rocks show evidence of systematic changes in depositional environments that can be related to eustatic sea level changes and basin evolution. Even deep-basinal environments are affected by changing sea level through changes in circulation patterns and intensities, nutrient budgets and dispersal patterns, and location and intensity of the oceanic oxygen minimum. The sequence-stratigraphic framework was constructed based on the physical expression of the outcrop strata and confirmed bymore » typing the outcrop sections to an integrated will-log/seismic grid through outcrop gamma-ray spectral profiles. Interpretation of a sequence boundary was based on increased proportions of hemipelagic facies and evidence of increased bottom-energy levels above the boundary, and local erosion and relief on the surface. The proportion of shallower water and reworked dinoflagellates increased to a local maximum above the boundary. Downlap surfaces exhibited increased proportions of pelagic facies around the surface, a secular change in the dominant lithology across the surface, evidence of decreased bottom-energy levels and terrigenous sedimentation rates, and little or not significant erosion on the surface. The proportion of deeper water dinoflagellates increased to a local maximum at or near the downlap surface; there was no evidence of reworked individuals. The detailed sequence-stratigraphic framework makes it possible to tie rock properties to genetic processes for construction of predictive models.« less
  • Marine growth on the Hondo platform has been well documented in photography over the years. These photographs have been reviewed in order to understand the interrelationship between different foulers and the sequence of their growth. This understanding has been useful in developing a reasonable predictive marine growth model for future platforms in the vicinity of Hondo. In addition, marine growth thickness and roughness were measured on the present Hondo platform in May, 1981. These measurements are compared with the measurements on the nearshore Chevron platforms. The reasons for differences in the growth patterns are discussed. The final marine growth andmore » roughness profiles for environmental loading purposes were estimated from these measurements.« less