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Catalog of significant historical earthquakes in the Central United States
W. H. Bakun, M. G. Hopper
2004, Open-File Report 2004-1086
We use Modified Mercalli intensity assignments to estimate source locations and moment magnitude M for eighteen 19th-century and twenty early- 20th-century earthquakes in the central United States (CUS) for which estimates of M are otherwise not available. We use these estimates, and locations and M estimated elsewhere, to compile a...
Hydrogeologic characteristics of four public drinking-water supply springs in northern Arkansas
Joel M. Galloway
2004, Water-Resources Investigations Report 2003-4307
In October 2000, a study was undertaken by the U.S. Geological Survey (USGS) in cooperation with the Arkansas Department of Health to determine the hydrogeologic characteristics, including the extent of the recharge areas, for Hughes Spring, Stark Spring, Evening Shade Spring, and Roaring Spring, which are used for public-water supply...
Granular avalanches across irregular three-dimensional terrain: 2. Experimental tests
Richard M. Iverson, Matthew Logan, Roger P. Denlinger
2004, Journal of Geophysical Research Earth Surface (109)
Scaling considerations indicate that miniature experiments can be used to test models of granular avalanches in which the effects of intergranular fluid and cohesion are negligible. To test predictions of a granular avalanche model described in a companion paper, we performed bench top experiments involving avalanches of dry sand across...
Granular avalanches across irregular three-dimensional terrain: 1. Theory and computation
Roger P. Denlinger, Richard M. Iverson
2004, Journal of Geophysical Research Earth Surface (109)
To establish a theoretical basis for predicting and interpreting the behavior of rapid mass movements on Earth's surface, we develop and test a new computational model for gravity-driven motion of granular avalanches across irregular, three-dimensional (3-D) terrain. The principles embodied in the model are simple and few: continuum mass and...
Preparing for THEMIS controlled global Mars mosaics
Brent A. Archinal, Lynn A. Weller, Stuart C. Sides, Glen E. Cushing, Randolph L. Kirk, Laurence A. Soderblom, T. C. Duxbury
2004, Conference Paper, Lunar and Planetary Science XXXV : papers presented at the thirty-fifth Lunar and Planetary Science Conference
We have begun work to prepare for producing controlled 2001 Mars Odyssey THEMIS infrared (IR) and visible (VIS) global mosaics of Mars. This effort is being coordinated with colleagues from Arizona State University and on the THEMIS team who plan to address radiometric issues in making such mosaics. We are...
Mineral dissolution in the Cape Cod aquifer, Massachusetts, USA: I . Reaction stoichiometry and impact of accessory feldspar and glauconite on strontium isotopes, solute concentrations, and REY distribution
Michael Bau, Brian Alexander, John T. Chesley, Peter Dulski, Susan L. Brantley
2004, Geochimica et Cosmochimica Acta (68) 1199-1216
To compare relative reaction rates of mineral dissolution in a mineralogically simple groundwater aquifer, we studied the controls on solute concentrations, Sr isotopes, and rare earth element and yttrium (REY) systematics in the Cape Cod aquifer. This aquifer comprises mostly carbonate-free Pleistocene sediments that are about 90% quartz with minor...
Limiting spread of a unicolonial invasive insect and characterization of seasonal patterns of range expansion
Paul D. Krushelnycky, Lloyd L. Loope, Stephanie M. Joe
2004, Biological Invasions (6) 47-57
Limiting dispersal is a fundamental strategy in the control of invasive species, and in certain situations containment of incipient populations may be an important management technique. To test the feasibility of slowing the rapid spread of two Argentine ant (Linepithema humile) supercolonies in Haleakala National Park, Hawaii, we...
Comment on “Piezometric response in shallow bedrock at CB1: Implications for runoff generation and landsliding” by David R. Montgomery, William E. Dietrich, and John T. Heffner
Richard M. Iverson
2004, Water Resources Research (40) 1-3
Piezometric responses to rainfall on hillslopes commonly dictate the timing of landsliding. Insight to this phenomenon can be gained by evaluating the timescales for pore pressure perturbations to propagate normal and parallel to the ground surface, and these timescales can be estimated using characteristic values of hydraulic diffusivity [Iverson, 2000]....
Mineral commodity profiles: Cadmium
W. C. Butterman, Jozef Plachy
2004, Open-File Report 2002-238
Overview -- Cadmium is a soft, low-melting-point metal that has many uses. It is similar in abundance to antimony and bismuth and is the 63d element in order of crustal abundance. Cadmium is associated in nature with zinc (and, less closely, with lead and copper) and is extracted mainly as...
Publications of the Volcano Hazards Program 2002
Manuel Nathenson
2004, Open-File Report 2004-1047
The Volcano Hazards Program of the U.S. Geological Survey (USGS) is part of the Geologic Hazards Assessments subactivity as funded by Congressional appropriation. Investigations are carried out in the Geology and Hydrology Disciplines of the USGS and with cooperators at the Alaska Division of Geological and Geophysical Surveys, University of...
Location, Age, and Tectonic Significance of the Western Idaho Suture Zone (WISZ)
Robert J. Fleck, Robert E. Criss
2004, Open-File Report 2004-1039
The Western Idaho Suture Zone (WISZ) represents the boundary between crust overlying Proterozoic North American lithosphere and Late Paleozoic and Mesozoic intraoceanic crust accreted during Cretaceous time. Highly deformed plutons constituted of both arc and sialic components intrude the WISZ and in places are thrust over the accreted terranes. Pronounced...
Surveying Cross Sections of the Kootenai River Between Libby Dam, Montana, and Kootenay Lake, British Columbia, Canada
Gary J. Barton, Edward H. Moran, Charles Berenbrock
2004, Open-File Report 2004-1045
The declining population of Kootenai River white sturgeon, which was listed as an Endangered Species in 1994, has prompted a recovery team to assess the feasibility of various habitat enhancement scenarios to reestablish white sturgeon populations. As the first phase in this assessment, the U.S. Geological Survey collected stream channel...
Assessment of fish assemblages and minimum sampling effort required to determine botic integrity of large rivers in southern Idaho, 2002
Terry R. Maret, D.S. Ott
2004, Water-Resources Investigations Report 2003-4274
A critical issue surrounding biomonitoring in large rivers (fifth- through seventh-order) is the minimum sampling-reach distance required to collect an adequate number of fish to represent the fish assemblage within a reach. Excessive sampling effort (excessive reach length) is costly in terms of work hours, reduces the number of sites that can...
Water and Streambed Sediment Quality, and Ecotoxicology of a Stream along the Blue Ridge Parkway, Adjacent to a Closed Landfill, near Roanoke, Virginia: 1999
Donna Belval Ebner, Donald S. Cherry, Rebecca J. Currie
2004, Water-Resources Investigations Report 2003-4116
A study was done of the effects of a closed landfill on the quality of water and streambed sediment and the benthic macroinvertebrate community of an unnamed stream and its tributary that flow through Blue Ridge Parkway lands in west-central Virginia. The primary water source for the tributary is a...
SAM 2.1—A computer program for plotting and formatting surveying data for estimating peak discharges by the slope-area method
J.E. Hortness
2004, Fact Sheet 2004-3028
The U.S. Geological Survey (USGS) measures discharge in streams using several methods. However, measurement of peak discharges is often impossible or impractical due to difficult access, inherent danger of making measurements during flood events, and timing often associated with flood events. Thus, many peak discharge values often are calculated after...
Emergency Assessment of Debris-Flow Hazards from Basins Burned by the Padua Fire of 2003, Southern California
Susan H. Cannon, Joseph E. Gartner, Michael G. Rupert, John A. Michael
2004, Open-File Report 2004-1072
Results of a present preliminary assessment of the probability of debris-flow activity and estimates of peak discharges that can potentially be generated by debris flows issuing from basins burned by the Padua Fire of October 2003 in southern California in response to 25-year, 10-year, and 2-year recurrence, 1-hour duration rain...