210Pb and 210Po, manganese and iron cycling across the O2/H2S interface of a permanently anoxic fjord: Framvaren, Norway
Peter W. Swarzenski, Brent A. McKee, Kai Sorenson, James F. Todd
1999, Marine Chemistry (67) 199-217
Vertical profiles of dissolved and particulate 201Po and 210Pb were measured across the redox transition zone at Station F1 in Framvaren Fjord, Norway. In this fjord, a sharp decrease in pH above the O2/H2S interface facilitates the aerobic dissolution of MnO2. In contrast, Fe(II) concentrations begin to increase only at...
7Be as a tracer of flood sedimentation on the northern California continental margin
C. K. Sommerfield, C. A. Nittrouer, C. R. Alexander
1999, Continental Shelf Research (19) 335-361
Sediment inventories of the cosmogenic radionuclide 7Be (t1/2=53 d) were measured on the Eel River shelf and slope (northern California continental margin) to investigate sedimentation processes associated with coastal river flooding. Seabed coring shortly after major riverflow events in 1995 and 1997 documented a shelf-wide flood deposit, and subsequent radionuclide...
Airborne laser study quantifies El Niño-induced coastal change
Asbury H. Sallenger Jr., William Krabill, John H. Brock, Robert Swift, Mark Jansen, Serdar Manizade, Bruce Richmond, Monty Hampton, David Eslinger
1999, Eos, Transactions, American Geophysical Union (80) 89-92
Winter storms during the 1997–1998 El Niño caused extensive changes to the beaches and cliffs of the west coast of the United States, a NASA-NOAA-USGS investigation using a scanning airborne laser has found. For example, near Pacifica in central California, the cliff eroded locally as much as 10–13 m landward...
Scaling winter storm impacts on Assateague Island, Maryland, Virginia
Asbury H. Sallenger Jr., Peter Howd, John H. Brock, W. B. Krabill, R. N. Swift, S. Manizade, M. Duffy
1999, Conference Paper, Coastal sediments '99: proceedings of the 4th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes: conference theme: scales of coastal sediment motion and geomorphic change, Hauppauge, Long Island, New York, June 21-23, 1999
No abstract available....
Great earthquakes, abundant sand, and high wave energy in the Columbia Cell, USA
Curt D. Peterson, Guy R. Gelfenbaum, Harry M. Jol, Jim B. Phipps, Frank Reckendorf, Dave C. Twichell, Sandy Vanderberg, Lorraine Woxell
1999, Conference Paper, Coastal sediments '99: proceedings of the 4th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes: conference theme: scales of coastal sediment motion and geomorphic change, Hauppauge, Long Island, New York, June 21-23, 1999
No abstract available....
Climatic-eustatic control of Holocene nearshore parasequence development, southeastern Texas coast
Robert A. Morton, Jack L. Kindinger, James G. Flocks, Laura B. Stewart
1999, Gulf Coast Association of Geological Societies Transactions (49) 384-395
Sediment cores, seismic profiles, radiocarbon dates, and faunal assemblages were used to interpret the depositional setting and geological evolution of the southeastern Texas coast during the last glacio-eustatic cycle. Discrete lithofacies and biofacies zones in the ebb-dominated Sabine Lake estuary and adjacent chenier plain record alternating periods of rapid marine...
Effects of sample size and sampling frequency on studies of brown bear home ranges and habitat use
Steve M. Arthur, Charles C. Schwartz
1999, Ursus (11) 139-148
We equipped 9 brown bears (Ursus arctos) on the Kenai Peninsula, Alaska, with collars containing both conventional very-high-frequency (VHF) transmitters and global positioning system (GPS) receivers programmed to determine an animal's position at 5.75-hr intervals. We calculated minimum convex polygon (MCP) and fixed and adaptive kernel home ranges for randomly-selected...
Groundwater geochemistry in the Seminole Well Field, Cedar Rapids, Iowa
Robert A. Boyd
1999, Journal of the American Water Resources Association (35) 1257-1268
The City of Cedar Rapids obtains its municipal water supply from four well fields in an alluvial aquifer along the Cedar River in east-central Iowa. Since 1992, the City and the U.S. Geological Survey have cooperatively studied the groundwater-flow system and water chemistry near the well fields. The geochemistry in...
Manganese and associated ore deposits of China
James R. Hein, Delian Fan
James R. Hein, Delian Fan, editor(s)
1999, Ore Geology Reviews (15) 1-176
Ground-water quality along a flowpath in a surficial outwash aquifer in the Upper Mississippi River Basin: The influence of land use
W. J. Andrews, J. R. Stark, A. L. Fong, P. E. Hanson
1999, Hydrological Science and Technology (15) 66-75
No abstract available....
The controversial origin of central Utah's geologic complexities
Irving J. Witkind
1999, Bulletin 2166
Preliminary Digital Geologic Map of the Santa Ana 30' x 60' Quadrangle, Southern California
D. M. Morton (compiler), Rachel M. digital preparation by Hauser, Kelly R. Ruppert
1999, Open-File Report 99-172
Puget Sound aeromagnetic maps and data
Richard J. Blakely, Ray E. Wells, Craig S. Weaver
1999, Open-File Report 99-514
Hydrogeology and geochemistry of acid mine drainage in ground water in the vicinity of Penn Mine and Camanche Reservoir, Calaveras County, California: Summary report, 1993–95
Charles N. Alpers, S. N. Hamlin, M. P. Hunerlach
1999, Water-Resources Investigations Report 96-4287
No abstract available....
Replacement materials for lead weights used in measuring ground-water levels
B. G. Katz, J.C. Jelinski
1999, Open-File Report 99-52
Atlas of relations between climatic parameters and distributions of important trees and shrubs in North America
Robert S. Thompson, Katherine H. Anderson, Patrick J. Bartlein
1999, Professional Paper 1650-A,B
This atlas explores the continental-scale relations between the geographic ranges of woody plant species and climate in North America. A 25-km equal-area grid of modern climatic and bioclimatic parameters was constructed from instrumental weather records. The geographic distributions of selected tree and shrub species were digitized, and the presence or...
Geology of the Cordelia and the northern part of the Benicia 7.5 minute quadrangles, California: A digital map database
R. W. Graymer, E. E. Brabb, D. L. Jones
1999, Open-File Report 99-162
No abstract available....
The determination of forty two elements in geological materials by inductively coupled plasma-mass spectrometry
Paul H. Briggs, A. L. Meier
1999, Open-File Report 99-166
No abstract available....
Water-quality and lake-stage data for Wisconsin lakes, water year 1998
Dale M. Robertson, J. F. Elder, H.S. Garn, G. L. Goddard, S.B. Marsh, D.L. Olson, W. J. Rose
1999, Open-File Report 99-98
The U.S. Geological Survey (USGS), in cooperation with local and other agencies, collects data at selected lakes throughout Wisconsin. These data, accumulated over many years, provide a data base for developing an improved understanding of the water quality of lakes. To make these data available to interested parties outside the...
Water-quality assessment of the eastern Iowa basins: Data, September 1995 through September 1996
Kimberlee K.B. Akers, Douglas J. Schnoebelen, Mark E. Savoca, Linda R. Roberts, Kent Becher
1999, Open-File Report 99-66
The U.S. Geological Survey began data-collection activities in the Eastern Iowa Basins study unit of the National Water-Quality Assessment Program in September 1995 with the purpose of determining the status and trends in water quality. Surface-water data were collected, beginning in March 1996, on a monthly basis with occasional extra...
Selected ground-water data for Yucca Mountain region, southern Nevada and eastern California, through December 1997
R.J. La Camera, G.L. Locke, R.H. Munson
1999, Open-File Report 98-628
How to build a model illustrating sea-floor spreading and subduction
J.C. Lahr
1999, Open-File Report 99-132
This report describes how to build a model of the outer 300 km (180 miles) of the Earth that can be used to develop a better understanding of the principal features of plate tectonics, including sea-floor spreading, the pattern of magnetic stripes frozen into the sea floor, transform faulting, thrust...
Simulation of the effects of operating lakes Mendota, Monona, and Waubesa, south-central Wisconsin, as multipurpose reservoirs to maintain dry-weather flow
W.R. Krug
1999, Open-File Report 99-67
A digital reservoir routing model was used to simulate the operation of Lakes Mendota, Monona, and Waubesa, south-central Wisconsin for various levels of minimum release. Twenty-five years of record (1970?94) were used in model simulation. The amount of water available to maintain streamflow and lake levels during dry periods has...
Digital geologic map of the Sandpoint 1- by 2-degree quadrangle, Washington, Idaho, and Montana
F. K. Miller, R. F. Burmester, R. E. Powell, D. M. Miller, P. D. Derkey
1999, Open-File Report 99-144
The geology of the Sandpoint 1:250,000 quadrangle, Washington, Idaho, and Montana was mapped by F.K. Miller, R.F. Burmester, D.M. Miller, and R.E. Powell between 1963 and 1995 onto a scale-stable 1:250,000 topographic map base and subsequently input into an Arc/Info geographic information system (GIS) by P.D. Derkey. The digital geologic...
Water-quality assessment of the Delmarva Peninsula, Delaware, Maryland, and Virginia: Results of investigations, 1987-91
Robert J. Shedlock, J. M. Denver, M. A. Hayes, P. A. Hamilton, M.T. Koterba, L. J. Bachman, P. J. Phillips, W. S. Banks
1999, Water Supply Paper 2355-A
A regional ground-water-quality assessment of the Delmarva Peninsula was conducted as a pilot study for the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) Program. The study focused on the surficial aquifer and used both existing data and new data collected between 1988 and 1991. The new water samples were analyzed...
