A method of estimating the amount of in-situ gas hydrates in deep marine sediments
Myung W. Lee, D. R. Hutchinson, William P. Dillon, J. J. Miller, Warren F. Agena, B.A. Swift
1992, Open-File Report 92-276
The bulk volume of gas hydrate in marine sediment can be estimated by measuring interval velocities and amplitude blanking of hydrated zones from true-amplitude processed multichannel seismic reflection data. In general, neither velocity nor amplitude information is adequate to independently estimate hydrate concentration. We propose a method that uses amplitude...
A geochemical investigation of selected areas in Greenville and Laurens Counties, South Carolina: Implications for mineral resources
John C. Jackson
1992, Miscellaneous Field Studies Map 2205
The purpose of this study is to geochemically evaluate three areas within the Greenville 1° x 2° quadrangle (see index map) that have been shown by previous studies to contain anomalously high amounts of tin. Jackson and Moore (1992) reported the presence of cassiterite (SnO2)-bearing heavy-mineral concentrates from stream sediment...
A modular finite-element model (MODFE) for areal and axisymmetric ground-water-flow problems; Part 3, Design philosophy and programming details
L.J. Torak
1992, Open-File Report 91-471
Rainfall, streamflow, and peak stage data collected at the Murfreesboro, Tennessee, gaging network, March 1989 through July 1992
G.S. Outlaw, D.E. Butner, R.L. Kemp, A.T. Oaks, G.S. Adams
1992, Open-File Report 92-482
Rainfall, stage, and streamflow data in the Murfreesboro area, Middle Tennessee, were collected from March 1989 through July 1992 from a network of 68 gaging stations. The network consists of 10 tipping-bucket rain gages, 2 continuous-record streamflow gages, 4 partial-record flood hydrograph gages, and 72 crest-stage gages. Data collected by...
Modern mobile methane measurements in marshes
J.S. Leventhal
1992, Open-File Report 92-445
Composite geophysical model for continental volcanic-hosted epithermal mineralization; Cox and Singer mineral deposit models numbered 25b, 25c, 25d, and 25e
D. P. Klein, Viki Bankey
1992, Open-File Report 92-389
Geohydrologic systems in Kansas — Physical framework of the Great Plains aquifer system
Joseph M. Spinazola, R. J. Wolf, Harold E. McGovern
1992, Hydrologic Atlas 722-B
The purpose of this map report is to provide a description of one of the principal geohydrologic systems in Upper Cambrian through Lower Cretaceous rocks in Kansas. The report is the result of an investigation made as part of the Central Midwest Regional Aquifer-System Analysis (CMRASA). The CMRASA is one...
Interactive inversion of dipole loop-loop electromagnetic data for layered earth models using numerical integration and complex image theory
Walter L. Anderson
1992, Open-File Report 92-553
Finite-difference interblock transmissivity for unconfined aquifers and for aquifers having smoothly varying transmissivity
D.J. Goode, C.A. Appel
1992, Water-Resources Investigations Report 92-4124
More accurate alternatives to the widely used harmonic mean interblock transmissivity are proposed for block-centered finite-difference models of ground-water flow in unconfined aquifers and in aquifers having smoothly varying transmissivity. The harmonic mean is the exact interblock transmissivity for steady-state one-dimensional flow with no recharge if the transmissivity is assumed...
Contaminant transport and accumulation in Massachusetts Bay and Boston Harbor: A summary of U.S. Geological Survey studies
Bradford Butman, Michael H. Bothner, J.C. Hathaway, H. L. Jenter, H.J. Knebel, F.T. Manheim, R. P. Signell
1992, Open-File Report 92-202
The U.S. Geological Survey (USGS) is conducting studies in Boston Harbor, Massachusetts Bay, and Cape Cod Bay designed to define the geologic framework of the region and to understand the transport and accumulation of contaminated sediments. The region is being studied because of environmental problems caused by the introduction of...
Interactive inversion of dipole loop-loop electromagnetic data for layered earth models using numerical integration and complex image theory (version 1.0)
W.L. Anderson
1992, Open-File Report 92-553-B
No abstract available....
Map showing bottom topography of the Pacific continental margin, Point Conception to Point Loma
T. E. Chase, Wilde Pat, W. R. Normark, G. I. Evenden, C. P. Miller, B. A. Seekins, J. D. Young, M. S. Grim, C. J. Lief
1992, IMAP 2089-C
All contours, geographic outlines, and political boundaries shown on this map of the bottom topography, or bathymetry, of the Pacific continental margin between 34° and 41° N. latitudes were plotted from digital data bases in the library of the U.S. Geological Survey (USGS)-National Oceanic and Atmospheric Administration (NOAA) Joint Office...
Earthquake effects a computer animation and paper model
Tau Rho Alpha, Robert A. Page, Leslie C. Gordon
1992, Open-File Report 92-200-B
Inversion of plane-wave electromagnetic data for layered earth models using a graphical user interface (Version 1.0)
Walter L. Anderson
1992, Open-File Report 92-518-B
Simulation of ground-water flow in the Antlers aquifer in southeastern Oklahoma and northeastern Texas
R. B. Morton
1992, Water-Resources Investigations Report 88-4208
The Antlers Sandstone of Early Cretaceous age occurs in all or parts of Atoka, Bryan, Carter, Choctaw, Johnston, Love, Marshall, McCurtain, and Pushmataha Counties, a 4,400-square-mile area in southeastern Oklahoma parallel to the Red River. The sandstone comprising the Antlers aquifer is exposed in the northern one-third of the area,...
Evaluation of a ground-water flow and transport model of the upper Coachella Valley, California
E.G. Reichard, J.K. Meadows
1992, Water-Resources Investigations Report 91-4142
Digital elevation models for Slumgullion landslide, Hinsdale County, Colorado based on 1985 and 1990 aerial photography
Philip S. Powers, David J. Varnes, William Z. Savage
1992, Open-File Report 92-535-A
No abstract available....
Flow and solute-transport models for the New River in the New River Gorge National River, West Virginia
J.B. Wiley
1992, Open-File Report 92-65
Sedimentology, behavior, and hazards of debris flows at Mount Rainier, Washington
Kevin M. Scott, Patrick T. Pringle, J.W. Vallance
1992, Open-File Report 90-385
Mount Rainier is potentially the most dangerous volcano in the Cascade Range because of its great height, frequent earthquakes, active hydrothermal system, and extensive glacier mantle. Many debris flows and their distal phases have inundated areas far from the volcano during postglacial time. Two types of debris flows, cohesive and...
Descriptive model of stratabound sulfur, and contained-sulfur model of stratabound sulfur
K. R. Long
1992, Open-File Report 92-705
Modifications of two palynological processing techniques; ultrasonic processing and early-stage sieving
T.P. Sheehan
1992, Open-File Report 92-564
Industrial mineral deposit models; descriptive models for three lacustrine deposit types
G. J. Orris
1992, Open-File Report 92-593
A modular finite-element model (MODFE) for areal and axisymmetric ground-water-flow problems, Part 2: Derivation of finite-element equations and comparisons with analytical solutions
Richard L. Cooley
1992, Techniques of Water-Resources Investigations 06-A4
MODFE, a modular finite-element model for simulating steady- or unsteady-state, area1 or axisymmetric flow of ground water in a heterogeneous anisotropic aquifer is documented in a three-part series of reports. In this report, part 2, the finite-element equations are derived by minimizing a functional of the difference between the true...
Statistical models for estimating daily streamflow in Michigan
D. J. Holtschlag, Habib Salehi
1992, Water-Resources Investigations Report 91-4194
Statistical models for estimating daily streamflow were analyzed for 25 pairs of streamflow-gaging stations in Michigan. Stations were paired by randomly choosing a station operated in 1989 at which 10 or more years of continuous flow data had been collected and at which flow is virtually unregulated; a nearby station...
Data encapsulation using FORTRAN-77 modules; a first step toward object-oriented programming in water resources
D.B. Thompson, L. L. DeLong, J.M. Fulford
1992, Water-Resources Investigations Report 92-4123
