Surficial geologic map of the Amboy 30' x 60' quadrangle, San Bernardino County, California
David R. Bedford, David M. Miller, Geoffrey A. Phelps
2010, Scientific Investigations Map 3109
The surficial geologic map of the Amboy 30' x 60' quadrangle presents characteristics of surficial materials for an area of approximately 5,000 km2 in the eastern Mojave Desert of southern California. This map consists of new surficial mapping conducted between 2000 and 2007, as well as compilations from previous surficial...
Uncloaking a cryptic, threatened rail with molecular markers: origins, connectivity and demography of a recently-discovered population
Philippe Girard, John Y. Takekawa, Steven R. Beissinger
2010, Conservation Genetics (11) 2409-2418
The threatened California Black Rail lives under dense marsh vegetation, is rarely observed, flies weakly and has a highly disjunct distribution. The largest population of rails is found in 8–10 large wetlands in San Francisco Bay (SF Bay), but a population was recently discovered in the foothills of the Sierra...
Thermal state of permafrost in North America: A contribution to the international polar year
S.L. Smith, V.E. Romanovsky, A.G. Lewkowicz, C.R. Burn, M. Allard, G.D. Clow, K. Yoshikawa, J. Throop
2010, Permafrost and Periglacial Processes (21) 117-135
A snapshot of the thermal state of permafrost in northern North America during the International Polar Year (IPY) was developed using ground temperature data collected from 350 boreholes. More than half these were established during IPY to enhance the network in sparsely monitored regions. The measurement sites span a diverse...
The aquatic turtle assemblage inhabiting a highly altered landscape in southeast Missouri
Brad M. Glorioso, Allison J. Vaughn, J. Hardin Waddle
2010, Journal of Fish and Wildlife Management (1) 161-168
Turtles are linked to energetic food webs as both consumers of plants and animals and prey for many species. Turtle biomass in freshwater systems can be an order of magnitude greater than that of endotherms. Therefore, declines in freshwater turtle populations can change energy transfer in freshwater systems. Here we...
Rapid middle Miocene extension and unroofing of the southern Ruby Mountains, Nevada
Joseph P. Colgan, Keith A. Howard, Robert J. Fleck, Joseph L. Wooden
2010, Tectonics (29)
Paleozoic rocks in the northern Ruby Mountains were metamorphosed during Mesozoic crustal shortening and Cenozoic magmatism, but equivalent strata in the southern Ruby Mountains were never buried deeper than stratigraphic depths prior to exhumation in the footwall of a west dipping brittle normal fault. In the southern Ruby Mountains, Miocene...
The North American upper mantle: Density, composition, and evolution
Walter D. Mooney, Mikhail K. Kaban
2010, Journal of Geophysical Research B: Solid Earth (115)
The upper mantle of North America has been well studied using various seismic methods. Here we investigate the density structure of the North American (NA) upper mantle based on the integrative use of the gravity field and seismic data. The basis of our study is the removal of the gravitational...
Predicted liquefaction in the greater Oakland area and northern Santa Clara Valley during a repeat of the 1868 Hayward Fault (M6.7-7.0) earthquake
Thomas L. Holzer, Thomas E. Noce, Michael J. Bennett
2010, Proceedings of the Third Conference on Earthquake Hazards in the Eastern San Francisco Bay Area 147-163
Probabilities of surface manifestations of liquefaction due to a repeat of the 1868 (M6.7-7.0) earthquake on the southern segment of the Hayward Fault were calculated for two areas along the margin of San Francisco Bay, California: greater Oakland and the northern Santa Clara Valley. Liquefaction is predicted to be more...
Analysis of nonvolcanic tremor on the San Andreas Fault near Parkfield, CA using U.S. Geological Survey Parkfield Seismic Array
Jon B. Fletcher, Lawrence M. Baker
2010, Journal of Geophysical Research B: Solid Earth (115)
Reports by Nadeau and Dolenc (2005) that tremor had been detected near Cholame Valley spawned an effort to use UPSAR (U. S. Geological Survey Parkfield Seismic Array) to study characteristics of tremor. UPSAR was modified to record three channels of velocity at 40–50 sps continuously in January 2005 and ran...
The 2003-2008 summary of the North American Breeding Bird Survey
David J. Ziolkowski Jr., Keith L. Pardieck, John R. Sauer
2010, Bird Populations (10) 90-109
Data from the North American Breeding Bird Survey were used to estimate continental and regional changes in bird populations for the 6-yr period 2003-2008 and the 2-yr period 2007-2008. These short-term changes were placed in the context of population trends estimated over the 1966-2008 interval. Across the entire survey area,...
Suspended-sediment concentration regimes for two biological reference streams in Middle Tennessee
Timothy H. Diehl, William J. Wolfe
2010, Journal of the American Water Resources Association (46) 824-837
Temporal patterns of suspended-sediment concentration (SSC) duration and frequency (SSC regimes) were characterized and compared with biological impairment thresholds for two headwater streams in the Western Highland Rim of Tennessee. The SSC regimes were plotted as curves showing concentrations and durations of the annual longest and tenth-longest SSC excursions above...
Stimulation of methane generation from nonproductive coal by addition of nutrients or a microbial consortium
Elizabeth Jones, Mary A. Voytek, M.D. Corum, William H. Orem
2010, Applied and Environmental Microbiology (76) 7013-7022
Biogenic formation of methane from coal is of great interest as an underexploited source of clean energy. The goal of some coal bed producers is to extend coal bed methane productivity and to utilize hydrocarbon wastes such as coal slurry to generate new methane. However, the process and factors controlling...
Spring migration and summer destinations of northern pintails from the coast of southern California
Michael R. Miller, John Y. Takekawa, Daniel S. Battaglia, Richard T. Golightly, William M. Perry
2010, Southwestern Naturalist (55) 501-509
To examine pathways, timing, and destinations during migration in spring, we attached satellite-monitored transmitters (platform transmitting terminals) to 10 northern pintails (Anas acuta) during February 2001, at Point Mugu, Ventura County, California. This is a wintering area on the southern coast of California. We obtained locations from five adult males...
Public water-supply systems and associated water use in Tennessee, 2005
John A. Robinson, Jaala M. Brooks
2010, Open-File Report 2010-1226
Public water-supply systems in Tennessee provide water to for domestic, industrial, and commercial uses, and municipal services. In 2005, more than 569 public water-supply systems distributed about 920 million gallons per day (Mgal/d) of non-purchased surface water and groundwater to a population of nearly 6 million in Tennessee. Surface-water sources...
Archive of side scan sonar and swath bathymetry data collected during USGS cruise 10CCT01 offshore of Cat Island, Gulf Islands National Seashore, Mississippi, March 2010
Nancy T. DeWitt, James G. Flocks, William R. Pfeiffer, Dana S. Wiese
2010, Data Series 563
In March of 2010, the U.S. Geological Survey (USGS) conducted geophysical surveys east of Cat Island, Mississippi (fig. 1). The efforts were part of the USGS Gulf of Mexico Science Coordination partnership with the U.S. Army Corps of Engineers (USACE) to assist the Mississippi Coastal Improvements Program (MsCIP) and the...
Evaluation of geodetic and geologic datasets in the Northern Walker Lane-Summary and recommendations of the Workshop
Richard W. Briggs, William C. Hammond
2010, Open-File Report 2011-1282
The Northern Walker Lane comprises a complex network of active faults in northwestern Nevada and northeastern California bound on the west by the Sierra Nevada and on the east by the extensional Basin and Range Province. Because deformation is distributed across sets of discontinuous faults, it is particularly challenging to...
Prairie wetland complexes as landscape functional units in a changing climate
W. Carter Johnson, Brett Werner, Glenn R. Guntenspergen, Richard A. Voldseth, Bruce Millett, David E. Naugle, Mirela Tulbure, Rosemary W.H. Carroll, John Tracy, Craig Olawsky
2010, BioScience (60) 128-140
The wetland complex is the functional ecological unit of the prairie pothole region (PPR) of central North America. Diverse complexes of wetlands contribute high spatial and temporal environmental heterogeneity, productivity, and biodiversity to these glaciated prairie landscapes. Climatewarming simulations using the new model WETLANDSCAPE (WLS) project major reductions in water...
Predictors of occurrence of the aquatic macrophyte Podostemum ceratophyllum in a southern Appalachian River
Jane E. Argentina, Mary Freeman, Byron J. Freeman
2010, Southeastern Naturalist (9) 465-476
The aquatic macrophyte Podostemum ceratophyllum (Hornleaf Riverweed) commonly provides habitat for invertebrates and fishes in flowing-water portions of Piedmont and Appalachian streams in the eastern US. We quantified variation in percent cover by P. ceratophyllum in a 39-km reach of the Conasauga River, TN and GA, to test the hypothesis...
Porosity and grain size controls on compaction band formation in Jurassic Navajo Sandstone
Richard A. Schultz, Chris H. Okubo, Haakon Fossen
2010, Geophysical Research Letters (37)
Determining the rock properties that permit or impede the growth of compaction bands in sedimentary sequences is a critical problem of importance to studies of strain localization and characterization of subsurface geologic reservoirs. We determine the porosity and average grain size of a sequence of stratigraphic layers of Navajo Sandstone...
Applying dispersive changes to Lagrangian particles in groundwater transport models
Leonard F. Konikow
2010, Transport in Porous Media (85) 437-449
Method-of-characteristics groundwater transport models require that changes in concentrations computed within an Eulerian framework to account for dispersion be transferred to moving particles used to simulate advective transport. A new algorithm was developed to accomplish this transfer between nodal values and advecting particles more precisely and realistically compared to currently...
Introduction - The impacts of the 2008 eruption of Kasatochi Volcano on terrestrial and marine ecosystems in the Aleutian Islands, Alaska
Anthony R. DeGange, G. Vernon Byrd, Lawrence R. Walker, C. F. Waythomas
2010, Arctic, Antarctic, and Alpine Research (42) 245-249
The Aleutian Islands are situated on the northern edge of the so-called “Pacific Ring of Fire,” a 40,000-km-long horseshoe-shaped assemblage of continental landmasses and islands bordering the Pacific Ocean basin that contains many of the world's active and dormant volcanoes. Schaefer et al. (2009) listed 27 historically active volcanoes in...
Fine-scale population genetic structure in Alaskan Pacific halibut (Hippoglossus stenolepis)
Jennifer L. Nielsen, Sara L. Graziano, Andrew C. Seitz
2010, Conservation Genetics (11) 999-1012
Pacific halibut collected in the Aleutian Islands, Bering Sea and Gulf of Alaska were used to test the hypothesis of genetic panmixia for this species in Alaskan marine waters. Nine microsatellite loci and sequence data from the mitochondrial (mtDNA) control region were analyzed. Eighteen unique mtDNA haplotypes were found with...
Forecasting hurricane impact on coastal topography: Hurricane Ike
Nathaniel G. Plant, Hilary F. Stockdon, Sallenger Jr., Michael J. Turco, Jeffery W. East, Arthur A. Taylor, Wilson A. Shaffer
2010, Eos, Transactions, American Geophysical Union (91) 65-72
Extreme storms can have a profound impact on coastal topography and thus on ecosystems and human-built structures within coastal regions. For instance, landfalls of several recent major hurricanes have caused significant changes to the U.S. coastline, particularly along the Gulf of Mexico. Some of these hurricanes (e.g., Ivan in 2004,...
Hydrothermal zebra dolomite in the Great Basin, Nevada--attributes and relation to Paleozoic stratigraphy, tectonics, and ore deposits
S. F. Diehl, A. H. Hofstra, A.E. Koenig, P. Emsbo, W. Christiansen, Chad Johnson
2010, Geosphere (6) 663-690
In other parts of the world, previous workers have shown that sparry dolomite in carbonate rocks may be produced by the generation and movement of hot basinal brines in response to arid paleoclimates and tectonism, and that some of these brines served as the transport medium for metals fixed in...
Hydrogeology of the potsdam sandstone in northern New York
John H. Williams, Richard J. Reynolds, David A. Franzi, Edwin A. Romanowicz, Frederick L. Paillet
2010, Canadian Water Resources Journal (35) 399-416
The Potsdam Sandstone of Cambrian age forms a transboundary aquifer that extends across northern New York and into southern Quebec. The Potsdam Sandstone is a gently dipping sequence of arkose, subarkose, and orthoquartzite that unconformably overlies Precambrian metamorphic bedrock. The Potsdam irregularly grades upward over a thickness of 450 m...
Distribution patterns of wintering sea ducks in relation to the North Atlantic Oscillation and local environmental characteristics
Elise F. Zipkin, Beth Gardner, Andrew T. Gilbert, Allan F. O’Connell, J. Andrew Royle, Emily D. Silverman
2010, Oecologia (163) 893-902
Twelve species of North American sea ducks (Tribe Mergini) winter off the eastern coast of the United States and Canada. Yet, despite their seasonal proximity to urbanized areas in this region, there is limited information on patterns of wintering sea duck habitat use. It is difficult to gather information on...
