August 2008 eruption of Kasatochi volcano, Aleutian Islands, Alaska-resetting an Island Landscape
William E. Scott, Christopher J. Nye, Christopher F. Waythomas, Christina A. Neal
2010, Arctic, Antarctic, and Alpine Research (42) 250-259
Kasatochi Island, the subaerial portion of a small volcano in the western Aleutian volcanic arc, erupted on 7-8 August 2008. Pyroclastic flows and surges swept the island repeatedly and buried most of it and the near-shore zone in decimeters to tens of meters of deposits. Several key seabird rookeries in...
A new capture fraction method to map how pumpage affects surface water flow
S. A. Leake, H. W. Reeves, J.E. Dickinson
2010, Ground Water (48) 690-700
All groundwater pumped is balanced by removal of water somewhere, initially from storage in the aquifer and later from capture in the form of increase in recharge and decrease in discharge. Capture that results in a loss of water in streams, rivers, and wetlands now is a concern in many...
Recorded motions of the 6 April 2009 Mw 6.3 L'Aquila, Italy, earthquake and implications for building structural damage: Overview
M. Çelebi, P. Bazzurro, L. Chiaraluce, P. Clemente, L. Decanini, A. Desortis, W. Ellsworth, A. Gorini, E. Kalkan, S. Marcucci, G. Milana, F. Mollaioli, M. Olivieri, R. Paolucci, D. Rinaldis, A. Rovelli, F. Sabetta, C. Stephens
2010, Earthquake Spectra (26) 651-684
The normal-faulting earthquake of 6 April 2009 in the Abruzzo Region of central Italy caused heavy losses of life and substantial damage to centuriesold buildings of significant cultural importance and to modern reinforcedconcrete- framed buildings with hollow masonry infill walls. Although structural deficiencies were significant and widespread, the study of...
Soil organic carbon stocks in Alaska estimated with spatial and pedon data
Norman B. Bliss, J. Maursetter
2010, Soil Science Society of America Journal (74) 565-579
Temperatures in high-latitude ecosystems are increasing faster than the average rate of global warming, which may lead to a positive feedback for climate change by increasing the respiration rates of soil organic C. If a positive feedback is confirmed, soil C will represent a source of greenhouse gases that is...
Waterfowl ecology and avian influenza in california: Do host traits inform us about viral occurrence?
N.J. Hill, John Y. Takekawa, C.J. Cardona, Joshua T. Ackerman, A.K. Schultz, K.A. Spragens, W.M. Boyce
2010, Avian Diseases (54) 426-432
We examined whether host traits influenced the occurrence of avian influenza virus (AIV) in Anatidae (ducks, geese, swans) at wintering sites in California's Central Valley. In total, 3487 individuals were sampled at Sacramento National Wildlife Refuge and Conaway Ranch Duck Club during the hunting season of 2007-08. Of the 19...
Predicting the probability and volume of postwildfire debris flows in the intermountain western United States
S.H. Cannon, J.E. Gartner, M.G. Rupert, J. A. Michael, A. H. Rea, C. Parrett
2010, Geological Society of America Bulletin (122) 127-144
Empirical models to estimate the probability of occurrence and volume of postwildfire debris flows can be quickly implemented in a geographic information system (GIS) to generate debris-flow hazard maps either before or immediately following wildfires. Models that can be used to calculate the probability of debris-flow production from individual drainage...
Late Devonian glacigenic and associated facies from the central Appalachian Basin, eastern United States
D. K. Brezinski, C. B. Cecil, V.W. Skema
2010, Geological Society of America Bulletin (122) 265-281
Late Devonian strata in the eastern United States are generally considered as having been deposited under warm tropical conditions. However, a stratigraphically restricted Late Devonian succession of diamictite- mudstonesandstone within the Spechty Kopf and Rockwell Formations that extends for more than 400 km along depositional strike within the central Appalachian...
Influence of coal-tar sealcoat and other carbonaceous materials on polycyclic aromatic hydrocarbon loading in an urban watershed
Y. Yang, P. C. Van Metre, B.J. Mahler, J.T. Wilson, B. Ligouis, M. Razzaque, D.J. Schaeffer, C.J. Werth
2010, Environmental Science & Technology (44) 1217-1223
Carbonaceous material (CM) particles are the principal vectors transporting polycyclic aromatic hydrocarbons (PAHs) into urban waters via runoff; however, characteristics of CM particles in urban watersheds and their relative contributions to PAH contamination remain unclear. Our objectives were to identify the sources and distribution of CM particles in an urban...
Judging a brook by its cover: The relation between ecological condition of a stream and urban land cover in new England
J.F. Coles, T. F. Cuffney, G. McMahon, C. J. Rosiu
2010, Northeastern Naturalist (17) 29-48
The US Geological Survey conducted an urban land-use study in the New England Coastal Basins (NECB) area during 2001 to determine how urbanization relates to changes in the ecological condition of streams. Thirty sites were selected that differed in their level of watershed development (low to high). An urban intensity...
Pyrethroid insecticide concentrations and toxicity in streambed sediments and loads in surface waters of the San Joaquin Valley, California, USA
Joseph L. Domagalski, Donald P. Weston, Minghua Zhang, Michelle L. Hladik
2010, Environmental Toxicology and Chemistry (29) 813-823
Pyrethroid insecticide use in California, USA, is growing, and there is a need to understand the fate of these compounds in the environment. Concentrations and toxicity were assessed in streambed sediment of the San Joaquin Valley of California, one of the most productive agricultural regions of the United States. Concentrations...
Paradigms and proboscideans in the southern Great Lakes region, USA
J.J. Saunders, E.C. Grimm, C.C. Widga, G.D. Campbell, B. Brandon Curry, D.A. Grimley, P.R. Hanson, J.P. McCullum, J.S. Oliver, J.D. Treworgy
2010, Quaternary International (217) 175-187
Thirteen new chronometric dates for Illinois proboscideans are considered in relation to well-dated pollen records from northeastern and central Illinois. These dates span an interval from 21,228 to 12,944 cal BP. When compared to pollen spectra, it is evident that Mammut americanum inhabited spruce (Picea) and black ash (Fraxinus nigra)...
Spectral assessment of new ASTER SWIR surface reflectance data products for spectroscopic mapping of rocks and minerals
J.C. Mars, L. C. Rowan
2010, Remote Sensing of Environment (114) 2011-2025
ASTER reflectance spectra from Cuprite, Nevada, and Mountain Pass, California, were compared to spectra of field samples and to ASTER-resampled AVIRIS reflectance data to determine spectral accuracy and spectroscopic mapping potential of two new ASTER SWIR reflectance datasets: RefL1b and AST_07XT. RefL1b is a new reflectance dataset produced for this...
Reclaimed mineland curve number response to temporal distribution of rainfall
R.C. Warner, C.T. Agouridis, P.T. Vingralek, A.W. Fogle
2010, Journal of the American Water Resources Association (46) 724-732
The curve number (CN) method is a common technique to estimate runoff volume, and it is widely used in coal mining operations such as those in the Appalachian region of Kentucky. However, very little CN data are available for watersheds disturbed by surface mining and then reclaimed using traditional techniques....
A trade-off solution between model resolution and covariance in surface-wave inversion
J. Xia, Y. Xu, R. D. Miller, C. Zeng
2010, Pure and Applied Geophysics (167) 1537-1547
Regularization is necessary for inversion of ill-posed geophysical problems. Appraisal of inverse models is essential for meaningful interpretation of these models. Because uncertainties are associated with regularization parameters, extra conditions are usually required to determine proper parameters for assessing inverse models. Commonly used techniques for assessment of a geophysical inverse...
Controls on rind thickness on basaltic andesite clasts weathering in Guadeloupe
P.B. Sak, A. K. Navarre-Sitchler, C.E. Miller, C.C. Daniel, J. Gaillardet, H.L. Buss, M.I. Lebedeva, S.L. Brantley
2010, Chemical Geology (276) 129-143
A clast of low porosity basaltic andesite collected from the B horizon of a soil developed on a late Quaternary volcaniclastic debris flow in the Bras David watershed on Basse-Terre Island, Guadeloupe, exhibits weathering like that observed in many weathered clasts of similar composition in other tropical locations. Specifically, elemental...
Influence of sea level rise on iron diagenesis in an east Florida subterranean estuary
M. Roy, J.B. Martin, J. Cherrier, J.E. Cable, Christopher G. Smith
2010, Geochimica et Cosmochimica Acta (74) 5560-5573
Subterranean estuary occupies the transition zone between hypoxic fresh groundwater and oxic seawater, and between terrestrial and marine sediment deposits. Consequently, we hypothesize, in a subterranean estuary, biogeochemical reactions of Fe respond to submarine groundwater discharge (SGD) and sea level rise. Porewater and sediment samples...
Land use and small mammal predation effects on shortgrass prairie birds
T.R. Stanley
2010, Journal of Wildlife Management (74) 1825-1833
Grassland birds endemic to the central shortgrass prairie ecoregion of the United States have experienced steep and widespread declines over the last 3 decades, and factors influencing reproductive success have been implicated. Nest predation is the major cause of nest failure in passerines, and nesting success for some shortgrass prairie...
The tidally averaged momentum balance in a partially and periodically stratified estuary
M.T. Stacey, Matthew L. Brennan, Jon R. Burau, Stephen G. Monismith
2010, Journal of Physical Oceanography (40) 2418-2434
Observations of turbulent stresses and mean velocities over an entire spring–neap cycle are used to evaluate the dynamics of tidally averaged flows in a partially stratified estuarine channel. In a depth-averaged sense, the net flow in this channel is up estuary due to interaction of tidal forcing with the geometry...
Rice production systems and avian influenza: Interactions between mixed-farming systems, poultry and wild birds
S.B. Muzaffar, John Y. Takekawa, D.J. Prosser, S. H. Newman, X. Xiao
2010, Waterbirds (33) 219-230
Wild waterfowl are the reservoir for avian influenza viruses (AIVs), a family of RNA viruses that may cause mild sickness in waterbirds. Emergence of H5N1, a highly pathogenic avian influenza (HPAI) strain, causing severe disease and mortality in wild birds, poultry and humans, had raised concerns about the role of...
Prey use by Swainson's Hawks in the lesser prairie-chicken range of the southern high plains of Texas
A.C. Behney, C. W. Boal, Heather A. Whitlaw, D.R. Lucia
2010, Journal of Raptor Research (44) 317-322
[No abstract available]...
Detailed p- and s-wave velocity models along the LARSE II transect, Southern California
J.M. Murphy, G. S. Fuis, T. Ryberg, W. J. Lutter, R. D. Catchings, M. R. Goldman
2010, Bulletin of the Seismological Society of America (100) 3194-3212
Structural details of the crust determined from P-wave velocity models can be improved with S-wave velocity models, and S-wave velocities are needed for model-based predictions of strong ground motion in southern California. We picked P- and S-wave travel times for refracted phases from explosive-source shots of the Los Angeles Region...
At-sea observations of marine birds and their habitats before and after the 2008 eruption of Kasatochi volcano, Alaska
G.S. Drew, Donald E. Dragoo, M. Renner, John F. Piatt
2010, Arctic, Antarctic, and Alpine Research (42) 325-334
Kasatochi volcano, an island volcano in the Aleutian chain, erupted on 7-8 August 2008. The resulting ash and pyroclastic flows blanketed the island, covering terrestrial habitats. We surveyed the marine environment surrounding Kasatochi Island in June and July of 2009 to document changes in abundance or distribution of nutrients, fish,...
New models for Paleoproterozoic orogenesis in the Cheyenne belt region: Evidence from the geology and U-Pb geochronology of the Big Creek Gneiss, southeastern Wyoming
D.S. Jones, A.W. Snoke, W. R. Premo, K.R. Chamberlain
2010, Geological Society of America Bulletin (122) 1877-1898
The disputed age of the deep crust of the Colorado Province is central to hypotheses for Paleoproterozoic crustal growth in the region. We studied the high-grade Big Creek Gneiss, southeastern Wyoming, as a potential exposure of pre-1780 Ma basement rocks. New geologic mapping and U-Pb geochronological data indicate that the...
Species within the Genus Encyonema Kützing, Including Two New Species Encyonema reimeri sp. nov. and E. nicafei sp. nov. and E. stoermeri nom. nov., stat. nov.
S. A. Spaulding, J. R. Pool, S. I. Castro, F. Hinz
2010, Proceedings of the Academy of Natural Sciences of Philadelphia (160) 57-71
We observed six diatom taxa from North American samples and one taxon from China that are considered within the genus Encyonema Kützing. Two of the taxa are described as new, Encyonema reimeri Spaulding, Pool et Castro sp. nov. and Encyonema nicafei Spaulding sp. nov. A third taxon, Encyonema stoermeri Spaulding, Pool et Castro nom. nov., shat. nov. is assigned a new...
Evaluation of Maryland abutment scour equation through selected threshold velocity methods
S.T. Benedict
2010, Transportation Research Record 153-167
The U.S. Geological Survey, in cooperation with the Maryland State Highway Administration, used field measurements of scour to evaluate the sensitivity of the Maryland abutment scour equation to the critical (or threshold) velocity variable. Four selected methods for estimating threshold velocity were applied to the Maryland abutment scour equation, and...
