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Conference Papers

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

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Lignin phenols in sediments of Lake Baikal, Siberia: Application to paleoenvironmental studies Lignin phenols in sediments of Lake Baikal, Siberia: Application to paleoenvironmental studies

Sediments from three cores obtained from distinct depositional environments in Lake Baikal, Siberia were analyzed for organic carbon, total nitrogen and lignin phenol concentration and composition. Results were used to examine changes in paleoenvironmental conditions during climatic cycles of the late Quaternary ( 125 ka). Average organic carbon, and total nitrogen concentrations, atomic...
Authors
W. H. Orem, Steven M. Colman, H.E. Lerch

Long time-series of turbid coastal water using AVHRR: An example from Florida Bay, USA Long time-series of turbid coastal water using AVHRR: An example from Florida Bay, USA

The AVHRR can provide information on the reflectance of turbid case II water, permitting examination of large estuaries and plumes from major rivers. The AVHRR has been onboard several NOAA satellites, with afternoon overpasses since 1981, offering a long time-series to examine changes in coastal water. We are using AVHRR data starting in December 1989, to examine water clarity in...
Authors
R. P. Stumpf, M.L. Frayer

Long-term observations of migrating shore-normal bars Long-term observations of migrating shore-normal bars

A series of migrating shore-normal sandbars with wavelengths of 50-200 m and heights of 0.5-2 m have been identified off the northern tip of Anna Maria Island, a barrier island on the west-central Florida coast. Similar features have been described elsewhere since the 1930's and termed `transverse bars.' The transverse bars identified off Anna Maria Island are found for about 3 km along...
Authors
Guy Gelfenbaum, Gregg R. Brooks

Low shear stress gravel-bed river Low shear stress gravel-bed river

A low stress gravel bed river is a river where the cross-sectional average dimensionless shear stress (??*) rarely exceeds 0.047. That is the case for the Gunnison River below Delta in Western Colorado. The cross-sectional average ??* in the Gunnison River has not exceeded 0.047, except at one cross section during one year, in the 87 years of record. A ??* of 0.047 is the critical ??* in...
Authors
Robert T. Milhous

Low-rank coal formation in Poland and the United States: I. Zitau Basin, Poland Low-rank coal formation in Poland and the United States: I. Zitau Basin, Poland

No abstract available.
Authors
J.R. Kasinski, R. B. Finkelman, M. Piwocki, R.W. Stanton, Peter D. Warwick

Mapping the radon potential of the united states: Examples from the Appalachians Mapping the radon potential of the united states: Examples from the Appalachians

The geologic radon potential of the United States was recently assessed by the U.S. Geological Survey. Results indicate that approximately 33% of the U.S. population lives within geologic provinces where the average indoor radon levels have the potential to be greater than 4 pCi/L (147 Bq/m3). Rock types most commonly associated with high indoor radon include: 1) Uraniferous...
Authors
L.C.S. Gundersen, R.R. Schumann

Near bottom velocity and suspended solids measurements in San Francisco Bay, California Near bottom velocity and suspended solids measurements in San Francisco Bay, California

Ability to accurately measure long-term time-series of turbulent mean velocity distribution within the bottom boundary layer (BBL) in addition to suspended solids concentration (SSC) is critical to understanding complex processes controlling transport, resuspension, and deposition of suspended sediments in bays and estuaries. A suite of instruments, including broad band acoustic Doppler...
Authors
Jeffrey W. Gartner, Ralph T. Cheng, David A. Cacchione, George B. Tate
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