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Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.

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Genetic studies of freshwater turtle and tortoises: a review of the past 70 years Genetic studies of freshwater turtle and tortoises: a review of the past 70 years

Powerful molecular techniques have been developed over many decades for resolving genetic relationships, population genetic structure, patterns of gene flow, mating systems, and the amount of genetic diversity in animals. Genetic studies of turtles were among the earliest and the rapid application of new genetic tools and analytical techniques is still apparent in the literature on...
Authors
Nancy N. FitzSimmons, Kristen M. Hart
By
Ecosystems Mission Area, Wetland and Aquatic Research Center

Geochemistry of natural components in the near-field environment, Yucca Mountain, Nevada Geochemistry of natural components in the near-field environment, Yucca Mountain, Nevada

The natural near-field environment in and around the emplacement drifts of the proposed nuclear waste repository at Yucca Mountain, Nevada, includes the host rock, dust, seepage, and pore water. The chemical compositions of these components have been determined for assessing possible chemical and mineralogical reactions that may occur after nuclear waste is emplaced. The rock hosting the...
Authors
Z. E. Peterman, T.A. Oliver

Geologic characterization of shelf areas using usSEABED for GIS mapping, modeling processes and assessing marine sand and gravel resources Geologic characterization of shelf areas using usSEABED for GIS mapping, modeling processes and assessing marine sand and gravel resources

Geologic maps depicting offshore sedimentary features serve many scientific and applied purposes. Such maps have been lacking, but recent computer technology and software offer promise in the capture and display of diverse marine data. Continental margins contain landforms which provide a variety of important functions and contain important sedimentary records. Some shelf areas also...
Authors
S.J. Williams, J. D. Bliss, M.A. Arsenault, C.J. Jenkins, J.A. Goff
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Pacific Coastal and Marine Science Center, St. Petersburg Coastal and Marine Science Center, Woods Hole Coastal and Marine Science Center

Geologic framework of the long bay inner shelf: implications for coastal evolution in South Carolina Geologic framework of the long bay inner shelf: implications for coastal evolution in South Carolina

The inner continental shelf off northern South Carolina is a sediment-limited environment characterized by extensive hardground areas, where coastal plain strata and ancient channel-fill deposits are exposed at the sea floor. Holocene sand is concentrated in large shoals associated with active tidal inlets, an isolated shore-detached sand body, and a widespread series of low-relief sand...
Authors
W. Barnhardt, J. Denny, W. Baldwin, W. Schwab, R. Morton, P. Gayes, N. Driscoll
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Geophysical data integration and conditional uncertainty analysis on hydraulic conductivity estimation Geophysical data integration and conditional uncertainty analysis on hydraulic conductivity estimation

Integration of various geophysical data is essential to better understand aquifer heterogeneity. However, data integration is challenging because there are different levels of support between primary and secondary data needed to be correlated in various ways. This study proposes a geostatistical method to integrate the hydraulic conductivity measurements and electrical resistivity data...
Authors
A. Rahman, F.T.-C. Tsai, C.D. White, D.A. Carlson, C. S. Willson

Geothermometer calculations for geothermal assessment Geothermometer calculations for geothermal assessment

Geothermal exploration programs have relied on the calculation of geothermometers from hot spring chemistry as an early estimation of geothermal reservoir temperatures. Calibration of the geothermometers has evolved from experimental determinations of mineral solubility as a function of temperature to calibration from analyses of water chemistry from known depths and temperatures in...
Authors
M.J. Reed, Robert H. Mariner
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