Performance assessments of nuclear waste repositories: A dialogue on their value and limitations
Rodney C. Ewing, Martin S. Tierney, Leonard F. Konikow, Rob P. Rechard
1999, Risk Analysis (19) 933-958
Performance Assessment (PA) is the use of mathematical models to simulate the long-term behavior of engineered and geologic barriers in a nuclear waste repository; methods of uncertainty analysis are used to assess effects of parametric and conceptual uncertainties associated with the model system upon the uncertainty in outcomes of the...
Modified Mercalli intensities for some California north-coast earthquakes
W. H. Bakun
1999, Open-File Report 99-171
Modified Mercalli Intensity (MMI) data are used by Bakun (in preparation) to estimate the location and moment magnitude M of California north-coast earthquakes from MMI observations only. The MMI data and site corrections used by Bakun (in preparation) are listed in this Open-file Report. This report is also accessible at...
Cobalt-rich ferromanganese crusts in the Pacific
James R. Hein, Andrea Koschinsky, Michael Bau, Frank T. Manheim, Jung-Keuk Kang, Leanne Roberts
D.S. Cronan, editor(s)
1999, Book chapter, Handbook of marine mineral deposits
Co-rich Fe-Mn crusts occur throughout the Pacific on seamounts, ridges, and plateaus where currents have kept the rocks swept clean of sediments at least intermittently for millions of years. Crusts precipitate out of cold ambient sea water onto hard-rock substrates forming pavements up to 250 mm thick. Crusts are important...
Comparison of seismic slope-performance models: Case study of the Oakland East quadrangle, California
Scott B. Miles, David K. Keefer
1999, Open-File Report 99-137
No abstract available....
Geologic map of the Scotts Mills, Silverton, and Stayton Northeast 7.5 minute quadrangles, Northwest Oregon: A digital database
Terry Tolan, Marvin Beeson, Karen L. Wheeler
1999, Open-File Report 99-141
The Scotts Mills, Silverton, and Stayton NE 7.5 minute quadrangles are situated along the eastern margin of the Willamette Valley and adjacent lower foothills (Waldo and Silverton Hills) of the Cascade Range (Fig. 1). The terrain within this area is of low to moderate relief, ranging from 100 to more...
Data-base model specifications from digital geologic-map data bases produced by the Southern California Areal Mapping Project (SCAMP)
S. A. Kennedy, J. C. Matti
1999, Open-File Report 99-145
Seismic and tsunami hazard in Puerto Rico and the Virgin Islands
William P. Dillon, Arthur D. Frankel, Charles S. Mueller, Rafael W. Rodriguez
Uri S. ten Brink, editor(s)
1999, Open-File Report 99-353
Executive SummaryPuerto Rico and the Virgin Islands are located at an active plate boundary between the North American plate and the northeast corner of the Caribbean plate. The region was subject in historical times to large magnitude earthquakes and devastating tsunamis. A major downward tilt of the sea floor north...
The way forward
John Estes, Alan Belward, Thomas Loveland, Joseph Scepan, Alan H. Strahler, John B. Townshend, Chris Justice
1999, Photogrammetric Engineering and Remote Sensing (65) 1089-1093
This paper focuses on the lessons hearned in the conduct of the lnternational Geosphere Biosphere Program's Data and Information System (rcnr-nts), global 1-km Land-Cover Mapping Project (n$cover). There is stiLL considerable fundamental research to be conducted dealing with the development and validation of thematic geospatial products derived from a combination...
Foraging trade-offs along a predator-permanence gradient in subalpine wetlands
Scott A Wissinger, Howard H. Whiteman, G. B. Sparks, G. L. Rouse, W. S. Brown
1999, Ecology (80) 2102-2116
We conducted a series of field and laboratory experiments to determine the direct and indirect effects of a top predator, the tiger salamander (Ambystoma tigrinum nebulosum), on larvae of two species of limnephilid caddisflies (Limnephilus externus and Asynarchus nigriculus) in subalpine wetlands in central Colorado. Asynarchus larvae predominate in temporary wetlands and are aggressive...
The Timan-Pechora Basin province of northwest Arctic Russia; Domanik, Paleozoic total petroleum system
Sandra J. Lindquist
1999, Open-File Report 99-50-G
The Domanik-Paleozoic oil-prone total petroleum system covers most of the Timan-Pechora Basin Province of northwestern Arctic Russia. It contains nearly 20 BBOE ultimate recoverable reserves (66% oil). West of the province is the early Precambrian Eastern European craton margin. The province itself was the site of periodic Paleozoic tectonic events,...
Converting contour-line data into data sets for a multilayered aquifer using a geographic information system
Julia A. Rees
1999, Open-File Report 99-54
Data sets that define the altitude of the base of basin-fill units in the west Salt River Valley were developed for the National Water-Quality Assessment program using a geographic information system. Data that define the land surface and the base of each basin-fill unit within a multilayered aquifer were compiled...
Digital data used to relate nutrient inputs to water quality in the Chesapeake Bay watershed
John W. Brakebill, Stephen D. Preston
1999, Open-File Report 99-60
Digital data sets were compiled by the U. S. Geological Survey (USGS) and used as input for a collection of Spatially Referenced Regressions On Watershed attributes for the Chesapeake Bay region. These regressions relate streamwater loads to nutrient sources and the factors that affect the transport of these nutrients throughout...
Organic compounds and trace elements in the Pocomoke River and tributaries, Maryland
Cherie V. Miller, Gregory D. Foster, Thomas B. Huff, John R. Garbarino
1999, Open-File Report 99-57
In response to concern about recent blooms of the dinoflagellate, Pfiesteria piscicida, samples of sediment and water were collected from the lower Pocomoke River Basin and were screened for trace elements, pesticides, and other organic compounds. A large group of steroid and fatty acid methyl-ester compounds was detected in streamwater...
Data report for seismic refraction surveys conducted from 1980 to 1982 in the Livermore Valley and the Santa Cruz Mountains, California
Angela J. Williams, Thomas M. Brocher, Walter D. Mooney, Annette Boken
1999, Open-File Report 99-146
We provide documentation for two seismic refraction profiles acquired by the U.S. Geological Survey in the San Francisco Bay area between 1980 and 1982 in Livermore Valley and the Santa Cruz Mountains. We also include the waveforms and travel times from five aftershocks of the April 1980 Livermore earthquake that...
Distribution of benthic foraminifers (>125 um) in the surface sediments of the Arctic Ocean
Lisa E. Osterman, Richard Z. Poore, Kevin M. Foley
1999, Bulletin 2164
Census data on benthic foraminifers (>125 ?m) in surface sediment samples from 49 box cores are used to define four depth-controlled biofacies, which will aid in the paleoceanographic reconstruction of the Arctic Ocean. The shelf biofacies contains a mix of shallow-water calcareous and agglutinated species from the continental shelves of the Beaufort and Chukchi Seas and...
The modeler's influence on calculated solubilities for performance assessments at the Aspo Hard-rock Laboratory
A.T. Ernren, R. Arthur, P. D. Glynn, J. McMurry
1999, Materials Research Society Symposium - Proceedings (556)
Four researchers were asked to provide independent modeled estimates of the solubility of a radionuclide solid phase, specifically Pu(OH)4, under five specified sets of conditions. The objectives of the study were to assess the variability in the results obtained and to determine the primary causes for this variability.In the exercise,...
Simulating contaminant attenuation, double-porosity exchange, and water age in aquifers using MOC3D
Daniel J. Goode
1999, Fact Sheet 086-99
MOC3D is a general-purpose computer model developed by the U.S. Geological Survey (USGS) for simulation of three-dimensional solute transport in ground water (Konikow and others, 1996). The model is an update to the widely used USGS two-dimensional solute-transport model (MOC) and is implemented as an optional “package” for the ground-water...
An interpretation of the 1997 airborne electromagnetic (AEM) survey, Fort Huachuca vicinity, Cochise County, Arizona
M.W. Bultman, M. E. Gettings, Jeff Wynn
1999, Open-File Report 99-7-A
Executive Summary -- In March of 1997, an airborne electromagnetic (AEM) survey of the Fort Huachuca Military Reservation and immediate surrounds (location map, http://geopubs.wr.usgs.gov/open-file/of99-007-b/index.jpg) was conducted. This survey was sponsored by the U.S. Army and contracted through the Geologic Division of the U.S. Geological Survey (USGS). Data were gathered by...
An Overview of the Factors Involved in Evaluating the Geochemical Effects of Highway Runoff on the Environment
Owen P. Bricker
1999, Open-File Report 98-630
Materials washed by rain and snowmelt from highways into adjacent surface waters, ground waters, and ecosystems can pollute water and affect biota. To understand the chemical behavior of any one of these materials and its effects on the environment requires knowledge of the chemistry of the material and how it...
Structural relationships of pre-Tertiary rocks in the Nevada Test Site region, southern Nevada
J. C. Cole, Patricia Hughes Cashman
1999, Professional Paper 1607
This report contains a synthesis and interpretation of structural and stratigraphic data for pre-Tertiary rocks in a large area of southern Nevada within and near the Nevada Test Site. Its presents descriptive and interpretive information from discontinuously exposed localities in the context of a regional model that integrates stratigraphy, sedimentology,...
Trends in base flows and extreme flows in the Beaver Kill Basin, Catskill Mountains, New York, 1915-94
Barry P. Baldigo
1999, Open-File Report 98-65
Long-term records from five streamflow-gaging stations within and near the 300-square mile Beaver Kill Basin were analyzed to determine whether construction and presence of New York State Route 17 (NY 17), which was completed in the late 1960's, could have altered hydrologic processes in the basin and thereby adversely affected...
Physiographic rim of the Grand Canyon, Arizona: A digital database
George H. Billingsley, Haydee M. Hampton
1999, Open-File Report 99-30
This Open-File report is a digital physiographic map database. This pamphlet serves to introduce and describe the digital data. There is no paper map included in the Open-File report. The report does include, however, PostScript and PDF format plot files, each containing an image of the map. For those interested...
Preliminary geologic map of the San Guillermo Mountain Quadrangle, Ventura County, California
S.A. Minor
1999, Open-File Report 99-32
New 1:24,000-scale geologic mapping in the Cuyama 30' x 60' quadrangle, in support of the USGS Southern California Areal Mapping Project (SCAMP), is contributing to a more complete understanding of the stratigraphy, structure, and tectonic evolution of the complex junction area between the NW-striking Coast Ranges and EW-striking western Transverse...
Finite-element surface-water modeling system; two-dimensional flow in the horizontal plane, addendum to the users manual
J. K. Lee
1999, Open-File Report 97-410
Error propagation in spatially explicit population models: A reassessment
Wolf M. Mooij, Donald L. DeAngelis
1999, Conservation Biology (13) 930-933
No abstract available....
