Monitoring dust storms and mapping landscape vulnerability to wind erosion using satellite and ground-based digital images
Pat S. Chavez Jr., David MacKinnon, Richard L. Reynolds, Miguel G. Velasco
2002, Arid Lands Newsletter
Wind-induced dust emission in the southwestern United States is important regionally because of its impact on human health and safety and its influence on ecosystem dynamics. Factors that control dust emission include wind velocity, sediment availability, and surface conditions (e.g., vegetation type and degree of cover, surface crusts and armoring,...
Evaluation of a local grid refinement method for steady-state block-centered finite-difference groundwater models
Mary C. Hill, Steffen W. Mehl
2002, Developments in Water Science (47) 367-374
A new method of local grid refinement for two-dimensional block-centered finite difference meshes that uses an iteration-based feedback to couple two separate grids has been developed. Its convergence properties have been evaluated and comparisons with alternative methods have been completed (Mehl and Hill, in review a). This work further investigates a...
Flood pulsing in wetlands: Restoring the natural hydrological balance
Beth A. Middleton, editor(s)
2002, Book
The latest cutting-edge research on flood pulsing and wetland restoration in North America.Presenting the latest research from leaders in the field of restoration ecology, Flood Pulsing in Wetlands reflects the current movement to incorporate flood pulsing into wetland restoration efforts. Emphasizing how integral flood pulsing is to successful wetland restoration,...
Geographic information systems compilation of geophysical, geologic, and tectonic data for the Bering Shelf, Chukchi Sea, Arctic margin, and adjacent landmasses
Simon L. Klemperer, Mark L. Greninger, Warren J. Nokleberg
2002, GSA Special Papers (360) 359-374
The accompanying CD-ROM contains a compilation of geophysical, geologic, and tectonic data for the Bering Shelf, the Chukchi Sea, the Arctic margin, and adjacent landmasses. These data sets focus on Alaska, the Russian Far East, and the continental shelves that link these two landmasses. For compatibility with other available geographic...
Interactions between onshore bedrock-channel incision and nearshore wave-base erosion forced by eustasy and tectonics
N.P. Snyder, K.X. Whipple, G.E. Tucker, D.J. Merritts
2002, Basin Research (14) 105-127
We explore the response of bedrock streams to eustatic and tectonically induced fluctuations in base level. A numerical model coupling onshore fluvial erosion with offshore wave‐base erosion is developed. The results of a series of simulations for simple transgressions with constant rate of sea‐level change (SLR) show that response depends on...
Osmium isotope constraints on lower crustal recycling and pluton preservation at Lassen Volcanic Center, CA
Garret L. Hart, Clark M. Johnson, Steven B. Shirey, Michael A. Clynne
2002, Earth and Planetary Science Letters (199) 269-285
Osmium isotope compositions of intermediate- to silicic-composition calc-alkaline volcanic rocks from the Lassen volcanic region of the Cascade arc are significantly more radiogenic (γOs=+23 to +224) than typical mantle. These evolved arc rocks in the Lassen region have unradiogenic Sr, Nd, and Pb isotope compositions which overlap with those of...
Major areas of ground-water development; Cache Valley
R.M. Danner, C.B. Burden
2002, Cooperative Investigations Report 43
No abstract available. ...
Evaporite tectonism in the lower Roaring Fork River valley, west-central Colorado
R. M. Kirkham, Randall K. Streufert, Michael J. Kunk, James R. Budahn, Mark R. Hudson, William J. Perry Jr.
2002, GSA Special Papers (366) 73-99
Evaporite tectonism in the lower Roaring Fork River valley in west-central Colorado has caused regional subsidence of a differentially downdropped area in the southern part of the Carbondale collapse center during the late Cenozoic. A prominent topographic depression coincides with this collapse area, and drainage patterns within the collapse area...
Persistence of tidally-oriented vertical migration by zooplankton in a temperate estuary
W.J. Kimmerer, Jon R. Burau, W.A. Bennett
2002, Estuaries (25) 359-371
Tidal vertical migration by zooplankton is a common phenomenon in estuaries, usually associated with landward movement of meroplankton or position maintenance of holoplankton. Little is known about the persistence of this behavior, its spatial variability, or its response to changing environmental conditions. We extended a previous study of tidal movements...
Variations in concentrations of atrazine and nitrate during well purging in relation to field water-quality parameters
P. D. Capel, Victoria Kruglov, M.K. Landon, G. N. Delin, H.J. Certain
2002, Hydrological Science and Technology (18) 217-230
No abstract available....
Estimates of ground-water recharge from precipitation to glacial-deposit and bedrock aquifers on Lopez, San Juan, Orcas, and Shaw islands, San Juan County, Washington
Laura A. Orr, Henry H. Bauer, Judith A. Wayenberg
2002, Water-Resources Investigations Report 2002-4114
An important source of fresh water on Lopez, San Juan, Orcas, and Shaw Islands in San Juan County off the northwestern coast of Washington is glacial-deposit and bedrock aquifers. Two methods were used to estimate recharge from precipitation to the water tables on the islands. A daily near-surface water-balance method,...
Asbestos: Geology, Mineralogy, Mining, and Uses
Robert L. Virta
2002, Open-File Report 2002-149
The term asbestos is a generic designation referring usually to six types of naturally occurring mineral fibers that are or have been commercially exploited. These fibers belong to two mineral groups: serpentines and amphiboles. The serpentine group contains a single asbestiform variety: chrysotile; five asbestiform varieties of amphiboles are known:...
User's guide to HYPOINVERSE-2000, a Fortran program to solve for earthquake locations and magnitudes
Fred W. Klein
2002, Open-File Report 2002-171
Hypoinverse is a computer program that processes files of seismic station data for an earthquake (like p wave arrival times and seismogram amplitudes and durations) into earthquake locations and magnitudes. It is one of a long line of similar USGS programs including HYPOLAYR (Eaton, 1969), HYPO71 (Lee and Lahr, 1972),...
Quality of economically extractable coal beds in the Gillette coal field as compared with other Tertiary coal beds in the Powder River basin, Wyoming and Montana
Margaret S. Ellis
2002, Open-File Report 2002-174
The Powder River Basin, and specifically the Gillette coal field, contains large quantities of economically extractable coal resources. These coal resources have low total sulfur content and ash yield, and most of the resources are subbituminous in rank. A recent U.S Geological Survey study of economically extractable coal in the...
Molybdenum recycling in the United States in 1998
John W. Blossom
2002, Open-File Report 2002-165
This report describes the flow of molybdenum in the United States in 1998 with emphasis on the extent to which molybdenum was recycled. Molybdenum was mostly recycled from products of molybdenum-bearing steels and superalloys, with some molybdenum products recovered specifically for their high molybdenum content. In 1998, 8,000 metric tons...
Abstracts of the annual Planetary Geologic Mappers Meeting, June 18-19, 2001, Albuquerque, New Mexico
Kenneth L. Tanaka, David A. Senske
Thomas J. Parker, editor(s)
2002, Open-File Report 2002-78
The annual Planetary Geologic Mappers Meeting serves two purposes. In addition to giving mappers the opportunity to exchange ideas, experiences, victories, and problems with others, presentations are reviewed by the Geologic Mapping Subcommittee (GeMS) to provide input to the Planetary Geology and Geophysics Mapping Program review panel’s consideration of new...
National Petroleum Reserve-Alaska (NPRA) core images and well data
David W. Houseknecht, editor(s)
2002, Data Series 75
This report contains photographic images and data from petroleum exploration wells drilled within and near the National Petroleum Reserve-Alaska (NPRA). The volume is organized into six chapters, each of which contains images and well data (including a GIS project of public domain cores) pertinent to the geology and petroleum potential...
Characterization and modes of occurrence of elements in feed coal and fly ash; an integrated approach
Michael E. Brownfield
2002, Fact Sheet 038-02
Despite certain environmental concerns, coal is likely to remain an important component of the United States energy supply, partly because it is the most abundant domestically available fossil fuel. One of the concerns about coal combustion for electricity production is the potential release of elements from coal and coal combustion...
Methods to achieve accurate projection of regional and global raster databases
E.L. Usery, J.C. Seong, D.R. Steinwand, M.P. Finn
2002, Open-File Report 2001-383
This research aims at building a decision support system (DSS) for selecting an optimum projection considering various factors, such as pixel size, areal extent, number of categories, spatial pattern of categories, resampling methods, and error correction methods. Specifically, this research will investigate three goals theoretically and empirically and, using the...
Sediment deposition and selected water-quality characteristics in Cedar Lake and Lake Olathe, Northeast Kansas, 2000
David P. Mau
2002, Water-Resources Investigations Report 2002-4073
The Lake Olathe watershed, located in northeast Kansas, was investigated using bathymetric survey data and reservoir bottom-sediment cores to determine sediment deposition, water-quality trends, and transport of nutrients (phosphorus and nitrogen species), selected trace elements, selected pesticides, and diatoms as indicators of eutrophic (organic-enriched and depleted oxygen supply) conditions. To...
Geochemistry of the Little Lost River drainage basin, Idaho
S.A. Swanson, J.J. Rosentreter, R. C. Bartholomay, L.L. Knobel
2002, Water-Resources Investigations Report 2002-4120
Deep-towed chirp profiles of the Blake Ridge collapse structure collected on USGS Cruises 92023 and 95023 aboard the R/V Cape Hatteras in 1992 and 1995
Jeffrey W. Nealon, William P. Dillon, William W. Danforth, Thomas F. O’Brien
2002, Open-File Report 2001-123
No abstract available....
Atlas of water resources in the Black Hills area, South Dakota
Janet M. Carter, Daniel G. Driscoll, Joyce E. Williamson, Van A. Lindquist
2002, Hydrologic Atlas 747
The Black Hills area is an important resource center that provides an economic base for western South Dakota through tourism, agriculture, the timber industry, and mineral resources. In addition, water originating from the area is used for municipal, industrial, agricultural, and recreational purposes throughout much of western South Dakota. The...
Environmental atlas of the Lake Pontchartrain Basin
Andrew Beall, Jack Kindinger
Shea Penland, editor(s)
2002, Open-File Report 2002-206
Methods of installing United States National Seismographic Network (USNSN) stations -- a construction manual
John R. McMillan
2002, Open-File Report 2002-144
