Composition of waters from the research drill hole at the summit of Kilauea Volcano, Hawaii; 1973-1991
Robert I. Tilling, Blair F. Jones
1995, Open-File Report 95-532
Hydrologic data for the Usquepaug-Queen River basin, Rhode Island
John D. Kliever
1995, Open-File Report 95-305
The Usquepaug-Queen River ground-water reservoir in Rhode Island is part of the stratified-drift aquifer along the Usquepaug-Queen River and its tributaries. The thickest, most permeable parts of the aquifer form the Usquepaug-Queen River ground-water reservoir. The 36.1-square mile study area comprises parts of Washington and Kent counties, and includes parts...
Ground-water flow and migration of hydrocarbons to the Lower Permian White Rim Sandstone, Tar Sand Triangle, southeastern Utah
Richard F. Sanford
1995, Bulletin 2000-J
Simulation of hydrodynamics and solute transport in the Neuse River estuary
Jeanne C. Robbins, Jerad Bales
1995, Open-File Report 94-511
An investigation was conducted to characterize flow, circulation, and transport in the Neuse River estuary, North Carolina. The study included a detailed field-measurement program and the calibration, validation, and application of a physically realistic numerical model of hydro- dynamics and transport through a 40-kilometer reach of the estuary. Water level,...
Seismotectonic maps in the vicinity of New Madrid, Missouri — Database
B. S. Rhea
1995, Open-File Report 95-574
No abstract available....
Overview of environmental and hydrogeologic conditions at Bettles Field, Alaska
James R. Cowan
1995, Open-File Report 95-343
Elements of infrastructure and seismic hazard in the central United States: Database
B. S. Rhea
1995, Open-File Report 95-241
No abstract available....
Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory-Determination of organochlorine pesticides and polychlorinated biphenyls in bottom sediment by dual capillary-column gas chromatography with electron-capture detection
William T. Foreman, Brooke F. Connor, Edward T. Furlong, Deborah G. Vaught, Leslie M. Merten
1995, Open-File Report 95-140
A method for the determination of 30 individual organochlorine pesticides, total toxaphene, and total polychlorinated biphenyls (PCBs) in bottom sediment is described. The method isolates the pesticides and PCBs by solvent extraction with dichlorobenzene, removes inorganic sulfur, large naturally occurring molecules, and other unwanted interferences by gel permeation chromatography, and...
Modeling hexavalent chromium reduction in groundwater in field-scale transport and laboratory batch experiments
J.C. Friedly, J.A. Davis, D.B. Kent
1995, Water Resources Research (31) 2783-2794
A plausible and consistent model is developed to obtain a quantitative description of the gradual disappearance of hexavalent chromium (Cr(VI)) from groundwater in a small-scale field tracer test and in batch kinetic experiments using aquifer sediments under similar chemical conditions. The data exhibit three distinct timescales. Fast reduction occurs in...
Ground-water flow, geochemistry, and effects of agricultural practices on nitrogen transport at study sites in the Piedmont and Coastal Plain physiographic provinces, Patuxent River Basin, Maryland
Randolph E. McFarland
1995, Open-File Report 94-507
The effects of agricultural practices on nitrogen transport were assessed at two 10-acre study sites in the Patuxent River Basin, Maryland, during 1986- 92. Nitrogen load was larger in ground water than in surface runoff at both sites. Denitrification and (or) long traveltimes of ground water at the study site...
The role of experiments in ecology
Mary E. Power, David Tilman, S.R. Carpenter, Nancy Huntly, Mathew Leibold, Peter Morin, Bruce A. Menge, James A. Estes, Paul R. Ehrlich, Mark Hixon, David M. Lodge, Mark A. McPeek, John E. Fauth, David N. Reznick, Larry B. Crowder, Sally J. Holbrook, Barbara L. Peckarsky, Douglas E. Gill, Janis Antonovics, G.A. Polis, David B. Wake, G. Orians, Ellen D. Ketterson, Elizabeth A. Marschall, Sharon P. Lawler
1995, Science (270) 561-561
No abstract available. ...
Tholeiitic‐alkalic transition at subglacial volcanoes, Tuya region, British Columbia, Canada
James G. Moore, C.J. Hickson, L. C. Calk
1995, Journal of Geophysical Research B: Solid Earth (100) 24577-24592
Ash Mountain, South Tuya, and Tuya Butte are three small basaltic volcanoes in the Stikine volcanic belt of northern British Columbia. The volcanoes rise 700, 500, and 400 m above their bases and are about 3.2, 1.6, and 2.6 km3 in volume, respectively. They began eruptive activity under several hundred meters...
Large arctic temperature change at the Wisconsin-Holocene glacial transition
Kurt M. Cuffey, Gary D. Clow, R. B. Alley, M. Stuiver, E.D. Waddington, Richard Saltus
1995, Science (270) 455-458
Analysis of borehole temperature and Greenland Ice Sheet Project II ice-core isotopic composition reveals that the warming from average glacial conditions to the Holocene in central Greenland was large, approximately 15°C. This is at least three times the coincident temperature change in the tropics and mid-latitudes. The coldest periods of...
Progress made in groundwater flow and transport modeling
Mary C. Hill, Chunmiao Zheng
1995, Eos, Transactions, American Geophysical Union (76)
A special session, “Automated Parameter Identification and Sensitivity Analysis in Groundwater Flow and Transport,” was held at the Spring AGU meeting last May to explore recent scientific and technological developments in this expanding research area. The problems and approaches discussed are crucial to any field of Earth science in which...
Robustness of survival estimates from radio-telemetry studies with uncertain relocation of individuals
Christine M. Bunck, Chiu-Lan Chen, Kenneth H. Pollock
1995, Journal of Wildlife Management (59) 790-794
Traditional methods of estimating survival from radio-telemetry studies use either the Trent-Rongstad approach (Trent and Rongstad 1974, Heisey and Fuller 1985) or the Kaplan-Meier approach (Kaplan and Meier 1958; Pollock et al. 1989a,b). Both methods appear to require the assumption that relocation probability for animals with a functioning radio is...
Spring-summer survival rates of yearling versus adult mallard females
Ronald E. Reynolds, Robert J. Blohm, James D. Nichols, James E. Hines
1995, Journal of Wildlife Management (59) 691-696
Knowledge of the timing, magnitude, and cause of mortality in wildlife populations is imperative for developing management strategies that protect or improve the status of these populations. Age- and sex-specific population parameter estimates provide the most useful information for this purpose. Numerous studies have provided information about survival rates in...
Age-class separation of blue-winged ducks
William L. Hohman, Joseph L. Moore, Daniel J. Twedt, John G. Mensik, E. Logerwell
1995, Journal of Wildlife Management (59) 727-735
Accurate determination of age is of fundamental importance to population and life history studies of waterfowl and their management. Therefore, we developed quantitative methods that separate adult and immature blue-winged teal (Anas discors), cinnamon teal (A. cyanoptera), and northern shovelers (A. clypeata) during spring and summer. To assess suitability of...
Spring-staging ecology of midcontinent greater white-fronted geese
Gary Krapu, Kenneth J. Reinecke, Dennis G. Jorde, S. Gay Simpson
1995, Journal of Wildlife Management (59) 736-746
A major part of the midcontinent greater white-fronted goose (Anser albifrons) population stages for several weeks in spring in the Rainwater Basin Area (RBA) of south-central Nebraska where substantial mortality from disease occurs periodically. Effective management of this population requires better data on use of habitat, vulnerability to disease, and...
Geographic variation in band reporting rates for mallards based on reward banding
James D. Nichols, Ronald E. Reynolds, Robert J. Blohm, Robert E. Trost, James E. Hines, Judith P. Bladen
1995, Journal of Wildlife Management (59) 697-708
We conducted a reward band study on mallards (Anas platyrhynchos) to estimate and test hypotheses about sources of variation in band reporting rate. We banded 25,398 mallards with standard and 100 reward bands (3 mallards banded with standard bands for every reward-banded mallard) during preseason (Jul-Sep), 1988. We used a...
Volcanic and structural evolution of Taupo Volcanic Zone, New Zealand: A review
C. J. N. Wilson, B. F. Houghton, M.O. McWilliams, Marvin A. Lanphere, S.D. Weaver, R. M. Briggs
1995, Journal of Volcanology and Geothermal Research (68) 1-28
The Taupo Volcanic Zone (TVZ) in the central North Island is the main focus of young volcanism in New Zealand. Andesitic activity started at c. 2 Ma, joined by voluminous rhyolitic (plus minor basaltic and dacitic) activity from c. 1.6 Ma. The TVZ is c. 300 km long (200 km...
A mass proportion method for calculating melting reactions and application to melting of model upper mantle lherzolite
Michael J. Walter, Thomas W. Sisson, Dean C. Presnall
1995, Earth and Planetary Science Letters (135) 77-90
We present a method for calculating quantitative melting reactions in systems with multiple solid solutions that accounts for changes in the mass proportions of phases between two points at different temperatures along a melting curve. This method can be applied to any data set that defines the phase proportions along...
Maps of upper Mississippi embayment Paleozoic and Precambrian rocks
Richard L. Dart
1995, Miscellaneous Field Studies Map 2284
The Mississippi Embayment regional seismic hazard (Fuller, 1912; Nuttli, 1973, 1982, 1983), associated with the New Madrid seismic zone (NMSZ) is attributed to displacement on seismogenic structures primarily within the failed Reelfoot rift (Burke and Dewey, 1973; Ervin and McGinnis, 1975; Hildenbrand, 1977; Johnston and Shedlock, 1992). Hildenbrand and others...
Maps showing gas-hydrate distribution off the east coast of the United States
William P. Dillon, Kristen L. Fehlhaber, Dwight F. Coleman, Myung W. Lee, Deborah R. Hutchinson
1995, Miscellaneous Field Studies Map 2268
These maps present the inferred distribution of natural-gas hydrate within the sediments of the eastern United States continental margin (Exclusive Economic Zone) in the offshore region from Georgia to New Jersey (fig. 1). The maps, which were created on the basis of seismic interpretations, represent the first attempt to map...
Subsurface recharge to the Tesuque aquifer system from selected drainage basins along the western side of the Sangre de Cristo Mountains near Santa Fe, New Mexico
Maryann Wasiolek
1995, Water-Resources Investigations Report 94-4072
Water budgets developed for basins of five streams draining the western side of the Sangre de Cristo Mountains in northern New Mexico indicate that subsurface inflow along the mountain front is recharging the Tesuque aquifer system of the Espanola Basin. Approximately 14,700 acre-feet of water per year, or 12.7 percent...
Selected characteristics of stormflow and base flow affected by land use and cover in the Chickahominy River basin, Virginia, 1989-91
M. J. Focazio, R.E. Cooper
1995, Water-Resources Investigations Report 94-4225
The Chickahominy River is the principal source of raw-water supply managed by the Department of Public Utilities, City of Newport News. Selected characteristics of stormflow and base flow, and major land use and cover factors that affect the distribution, movement, and quality of water of the nontidal Chickahominy River were...