Conference Papers
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Study of salt transport processes in Delaware Bay
The study described here is a subset of a broader climate-related study, and is focused primarily on salinity intrusion into Delaware Bay and River. Given changes in freshwater discharge into the Delaware River as determined from the larger study, and given probable sea level rise estimates, the purpose here is to calculate the distribution of salinity within Delaware Bay and River. The approach a
Authors
Roy Walters
Synthetic organic agrochemicals in the lower Mississippi River and its major tributaries: Distribution, transport and fate
The Mississippi River and its major tributaries transport herbicides and their degradation products from agricultural areas in the mid-western U.S.A. These compounds include atrazine and its degradation products (desethyl- and desisopropylatrazine), simazine, cyanazine, metolachlor, and alachlor and its degradation products (2-chloro-2',6'-diethylacetanilide, 2-hydroxy-2',6'-diethylacetanilide and
Authors
W. E. Pereira, C.E. Rostad, T.J. Leiker
Tale of three prospects
Most high-temperature, hydrothermal-convection systems probably are heated by bodies of magma (and/or hot plutons), whose presence is suggested by geologically young, if not active volcanism. Study of a young volcanic area provides information about the general thermal status of the underlying heat source, and detailed information about the time-space-volume-composition (TSVC) characteristics for
Authors
Wendell A. Duffield
The effect of rock type, grain size, sorting, permeability, and moisture on measurements of radon in soil gas: A comparison of two measurement techniques
Soil surveys of radon conducted in the Coastal Plain of New Jersey, Alabama and Texas indicate that soil composition and grain size exert the strongest control on the concentration of radon measured. Soil-gas radon was measured in-situ using two techniques; one developed by G. Michael REIMER of the U.S. Geological Survey; the other developed by Rogers and Associates Engineering Corp. for use by th
Authors
L.C.S. Gundersen
The effect of temperature on the distribution and co-occurrence of fairy shrimp (0:Anostraca) in vernal pools in San Diego, California
No abstract available at this time
Authors
S.A. Hathaway, J.N. Glaspy, J.L. Lamberson, M.A. Simovich
The vulnerability of juvenile Chinook salmon to predation by northern squawfish
No abstract available
Authors
M.G. Mesa, D.M. Gadomski, T.M. Olson
Tide- and wind-driven flushing of Boston Harbor, Massachusetts
The flushing of Boston Harbor, a shallow, tidally dominated embayment with little fresh water input, is investigated using a depth-averaged model. The modeled tidal currents exhibit strong spatial variability and ebb/flood asymmetry due to complex topography and coastline geometry and were verified by shipboard acoustic Doppler current profiler measurements. At the inlets to the harbor, the asymme
Authors
Richard Signell
Toward digital geologic map standards: a progress report
Establishing modern scientific and technical standards for geologic maps and their derivative map products is vital to both producers and users of such maps as we move into an age of digital cartography. Application of earth-science data in complex geographic information systems, acceleration of geologic map production, and reduction of population costs require that national standards be developed
Authors
George E. Ulrech, Mitchell W. Reynolds, Richard B. Taylor
Tracing watershed weathering reactions with 13C
No abstract available.
Authors
Carol Kendall, M.A. Mast, Karen C. Rice
Two-dimensional circulation modeling of the Pamlico River estuary, North Carolina
A two dimensional, vertically averaged, unsteady flow model was applied to a 50- kilometer reach of the Pamlico River estuary, North Carolina. The model computational grid, which consists of about 16,000 square cells, each 200 meters on a side, was developed from more than one million depth soundings. Information from a comprehensive data-collection network, including six water-level stations, six
Authors
G. L. Giese, Jerad Bales
Use of oxygen/hydrogen isotopes in generalizing recharge areas, Lee County, Florida
No abstract available
Authors
R.K. Krulikas
Using soil gas radon and geology to estimate regional radon potential
Two important parameters have been identified in order to estimate the radon potential of a region. They are the soil gas radon concentration and the geological rock type from which soils are derived. A simple soil gas collection and analytical technique has been developed to provide information on soil gas radon concentrations. The application of these techniques has demonstrated a clear relation
Authors
G. M. Reimer