Application of Gauss algorithm and Monte Carlo simulation to the identification of aquifer parameters
Timothy J. Durbin
1983, Open-File Report 81-688
The Gauss optimization technique can be used to identify the parameters of a model of a groundwater system for which the parameter identification problem is formulated as a least squares comparison between the response of the prototype and the response of the model. Unavoidable uncertainty in the true stress on...
The effects of water content and water resistivity on the dispersion of resistivity and dielectric constant in quartz sand in the frequency range 10^2 to 10^8 Hz
W.R. Eberle
1983, Open-File Report 83-914
Using modifications of previously developed methods, measurements were made of the resistivity and the dielectric constant of two similar quartz sands of different porosity over the frequency range 102-108 Hertz for various water contents and water resistivities. Dispersion is pronounced in all the resistivity data above 106 Hz. As water...
Recommended procedures and methodology of coal description
E.C. Chao, J.A. Minkin, C.L. Thompson
1983, Circular 894
This document is the result of a workshop on coal description held for the Branch of Coal Resources of the U.S. Geological Survey in March 1982. It has been prepared to aid and encourage the field-oriented coal scientist to participate directly in petrographic coal-description activities. The objectives and past and...
A U.S. Geological Survey Data Standard (Specifications for representation of geographic point locations for information interchange)
Water Resources Division, U.S. Geological Survey
1983, Circular 878-B
This standard establishes uniform formats for geographic point location data. Geographic point location refers to the use of a coordinate system to define the position of a point that may be on, above, or below the Earth's surface. It provides a means for representing these data in digital form for...
Hydrologic and geologic aspects of waste management and disposal; a bibliography of publications by U.S. Geological Survey authors, 1950-81
Elinor H. Handman
1983, Circular 907
References to more than 550 reports, articles, and maps are listed alphabetically by author and are indexed by subject. The subject index includes geographic-area terms. Citations from 69 series are included; series are listed separately. The publications listed report the results of U.S. Geological Survey research and field projects throughout...
Geophysical and geologic studies in southern Mecklenburg County and vicinity, North Carolina and South Carolina
Frederick A. Wilson
1983, Open-File Report 83-93
Geophysical methods consisting of gravity, aeromagnetics and aeroradioactivity have been applied to part of the Charlotte and Carolina slate belts in southern Mecklenburg County and vicinity to help interpret geology, lithology and structure. High aeroradioactivity is associated with potassium-rich granitic plutons, muscovite-rich gneisses, schists, and metavolcanic rocks; positive gravity and...
The Alaska Mineral Resource Assessment Program: Guide to information contained in folio of geologic and mineral resource maps of the Philip Smith Mountains quadrangle, Alaska
H. N. Reiser, W. P. Brosge, T. D. Hamilton, D.A. Singer, W. D. Menzie II, K. J. Bird, J. W. Cady, J. R. Le Compte, J. B. Cathrall
1983, Circular 759
The geology and mineral resources of the Philip Smith Mountains quadrangle were virtually unexplored until the investigations for oil began in northern Alaska. Construction of the Trans-Alaskan Pipeline System has now made the quadrangle accessible by road. In 1975 and 1976 a team of geologists, geochemists, and geophysicists investigated the...
A review of classical silicate-rock analysis and recommended modifications of classical methods of analysis
Lillie B. Jenkins
1983, Circular 864
Subsidence from underground mining; environmental analysis and planning considerations
Fitzhugh T. Lee, John F. Abel
1983, Circular 876
Subsidence, a universal process that occurs in response to the voids created by extracting solids or liquids from beneath the Earth's surface, is controlled by many factors including mining methods, depth of extraction, thickness of deposit, and topography, as well as the in situ properties of the rock mass above...
Hydrologic characteristics of lagoons at San Juan, Puerto Rico, during an October 1974 tidal cycle
Fernando Gómez-Gómez, S. R. Ellis
1983, Open-File Report 82-349
Flow and water-quality changes were studied during a period of intense rainfall in the San Juan Lagoon system. The study covered a 25-hour period beginning 0900 hours 22 October, 1974. Precipitation during the study period averaged 70 millimeters. Sampling stations were located at Boca de Cangrejos, the main ocean outlet;...
A two-dimensional, finite-difference model of the high plains aquifer in southern South Dakota
K.E. Kolm, H. L. Case III
1983, Water-Resources Investigations Report 83-4175
The High Plains aquifer is the principal source of water for irrigation, industry, municipalities, and domestic use in south-central South Dakota. The aquifer, composed of upper sandstone units of the Arikaree Formation, and the overlying Ogallala and Sand Hills Formations, was simulated using a two-dimensional, finite-difference computer model. The maximum...
Hydrogeology of parts of the Central Platte and Lower Loup Natural Resources Districts, Nebraska
J. M. Peckenpaugh, J. T. Dugan
1983, Water-Resources Investigations Report 83-4219
Water-level declines of at least 15 feet have occurred in this heavily irrigated area of central Nebraska since the 1930's, and potential for additonal declines is high. To test the effects of additional irrigation development on water levels and streamflow , computer programs were developed that represent the surface-water system,...
A summary of ground-water pumpage in the Central Valley, California, 1961-77
Jonathan Diamond, A. K. Williamson
1983, Water-Resources Investigations Report 83-4037
In the Central Valley of California, a great agricultural economy has been developed in a semiarid environment. This economy is supported by imported surface water and 9 to 15 million acre-feet per year of ground water. Estimates of ground-water pumpage computed from power consumption have been compiled and summarized. Under...
Hydrogeology of the Sarasota-Port Charlotte area, Florida
R. M. Wolansky
1983, Water-Resources Investigations Report 82-4089
The surficial and intermediate aquifers are the major source of public water supplies in the Sarasota-Port Charlotte, Florida, area because of the relatively poor quality of Floridan aquifer water. The hydrogeologic framework consists of the surficial aquifer, intermediate aquifers (Tamiami-upper Hawthorn and lower Hawthorn-upper Tampa aquifers) and confining beds, Floridan...
Habitat Suitability Index Models: Mink
Arthur W. Allen
1983, FWS/OBS 82/10.61
The mink (Mustela vison) is a predatory, semiaquatic mammal that is generally associated with stream and river banks, lake shores, fresh and saltwater marshes, and marine shore habitats (Gerell 1970). Mink are chiefly nocturnal and remain active throughout the year (Marshall 1936); Gerell 1969; Burgess 1978)....
A Flood model for the Tug Fork basin, Kentucky, Virginia, and West Virginia
W.H. Doyle, P.B. Curwick, K.M. Flynn
1983, Water-Resources Investigations Report 83-4014
Effect of the proposed Cooper River rediversion on sedimentation in Charleston Harbor, South Carolina
G. G. Patterson
1983, Water-Resources Investigations Report 83-4198
The rates of sedimentation and of resultant maintenance dredging in Charleston Harbor increased dramatically in the 1940s, following two major modifications to the harbor. One modification, the Santee-Cooper diversion project, caused a twentyfold increase in freshwater inflow to the harbor. The other modification was deepening of the navigation channels in...
Simulated effects of anticipated coal mining on dissolved solids in selected tributaries of the Yampa River, northwestern Colorado
R. S. Parker, J. M. Norris
1983, Water-Resources Investigations Report 83-4084
Identifying cumulative effects of coal mining on dissolved solids downstream from multipe coal-mining operations is particularly important in western basins. The problem of identifying cumulative effects is evident in the Trout Creek drainage, a tributary to the Yampa River in northwestern Colorado, where a number of mines are active and...
Distribution and abundance of copper, lead, and zinc in nonmagnetic and moderately magnetic heavy-mineral-concentrate, minus-80-mesh stream-sediment, and ash of aquatic-bryophyte samples, Medfra quadrangle, Alaska
H. D. King
1983, Open-File Report 80-811-I
Habitat Suitability Index Models: Littleneck clam
Kenneth Rodnick, Hiram W. Li
1983, FWS/OBS 82/10.59
The littleneck clam, a member of the family Veneridae, is a hardshell species found in estuaries, bays, sloughs, and open coastl ines along the Pacific coast. This clam primarily inhabits the intertidal zone, but also occurs in subtidal areas (Hancock et ale 1979). It ranges from the Aleutian Islands to...
Habitat Suitability Index Models: Gulf of Mexico American Oyster
Edwin W. Cake Jr.
1983, FWS/OBS 82/10.57
The American or eastern oyster (Crassostrea virrinica [Gmelin]), a bivalve in the family Ostreidae, is an important commercia and recreational species along the Atlantic and Gulf of Mexico coasts of North America and other areas (U.S. Pacific coast and Hawaii) where it has been introduced (Galtsoff 1964). It evolved over...
Reservoir-development impacts on surface-water quantity and quality in the Yampa River basin, Colorado and Wyoming
D. Briane Adams, Daniel P. Bauer, Robert H. Dale, Timothy Doak Steele
1983, Water-Resources Investigations Report 81-30
Development of coal resources and associated economy is accelerating in the Yampa River basin in northwestern Colorado and south-central Wyoming. Increased use of the water resources of the area will have a direct impact on their quantity and quality. As part of 18 surface-water projects, 35 reservoirs have been proposed...
Geology of the Tulare Formation and other continental deposits, Kettleman City area, San Joaquin Valley, California, with a section on ground-water management considerations and use of texture maps
R. W. Page
1983, Water-Resources Investigations Report 83-4000
The Tulare Formation and other continental deposits of Pliocene to Holocene age crop out over most of the area near Kettleman City in the San Joaquin Valley of California. The deposits range in thickness from 0 to more than 4,000 feet and overlie the upper Mya zone of the San...
Water-level changes in the high plains regional aquifer, northwestern Oklahoma, predevelopment to 1980
J.S. Havens
1983, Water-Resources Investigations Report 83-4073
During 1978, the U.S. Geological Survey began a 5-year study of the High Plains regional aquifer system to provide hydrologic information for evaluation of the effects of long-term development of the aquifer and to develop computer models for prediction of aquifer response to alternative changes in ground-water management (Weeks, 1978)....
Distribution and abundance of molybdenum, tin and tungsten in nonmagnetic and moderately magnetic heavy-mineral-concentrate samples and tin in minus-80-mesh stream-sediment and ash of aquatic-bryophyte samples, Medfra quadrangle, Alaska
H. D. King, D. A. Risoli, R. B. Tripp
1983, Open-File Report 80-811-J
No abstract available....
