A case study of alternative site response explanatory variables in Parkfield, California
E.M. Thompson, L.G. Baise, R. E. Kayen, E.C. Morgan, J. Kaklamanos
2011, Conference Paper, Geotechnical Special Publication
The combination of densely-spaced strong-motion stations in Parkfield, California, and spectral analysis of surface waves (SASW) profiles provides an ideal dataset for assessing the accuracy of different site response explanatory variables. We judge accuracy in terms of spatial coverage and correlation with observations. The performance of the alternative models is...
Effects of environmental temperature on the dynamics of ichthyophoniasis in Juvenile Pacific Herring (Clupea pallasii)
J.L. Gregg, Johanna J. Vollenweider, C.A. Grady, R.A. Heintz, P.K. Hershberger
2011, Journal of Parasitology Research (2011)
The effects of temperature and infection by Ichthyophonus were examined in juvenile Pacific herring (Clupea pallasii) maintained under simulated overwinter fasting conditions. In addition to defining parameters for a herring bioenergetics model (discussed in Vollenweider et al. this issue), these experiments provided new insights into factors influencing the infectivity and...
Proactive aquatic ecotoxicological assessment of room-temperature ionic liquids
K. J. Kulacki, D. T. Chaloner, James H. Larson, D. M. Costello, M. A. Evans-White, K. M. Docherty, R. J. Bernot, M. A. Brueseke, C. F. Kulpa, G. A. Lamberti
2011, Current Organic Chemistry (15) 1918-1927
Aquatic environments are being contaminated with a myriad of anthropogenic chemicals, a problem likely to continue due to both unintentional and intentional releases. To protect valuable natural resources, novel chemicals should be shown to be environmentally safe prior to use and potential release into the environment. Such proactive assessment is...
Geology and petroleum potential of the Arctic Alaska petroleum province
Kenneth J. Bird, David W. Houseknecht
2011, Geological Society Memoir 485-499
The Arctic Alaska petroleum province encompasses all lands and adjacent continental shelf areas north of the Brooks Range–Herald Arch orogenic belt and south of the northern (outboard) margin of the Beaufort Rift shoulder. Even though only a small part is thoroughly explored, it is one of the most prolific petroleum...
Winter habitat associations of diurnal raptors in Californias Central Valley
E.R. Pandolrno, M.P. Herzog, S.L. Hooper, Z. Smith
2011, Western Birds (42) 62-84
The wintering raptors of California's Central Valley are abundant and diverse. Despite this, little information exists on the habitats used by these birds in winter. We recorded diurnal raptors along 19 roadside survey routes throughout the Central Valley for three consecutive winters between 2007 and 2010. We obtained data sufficient...
Inter-specific coral chimerism: Genetically distinct multicellular structures associated with tissue loss in Montipora capitata
Thierry M. Work, Zac H. Forsman, Zoltan Szabo, Teresa D. Lewis, Greta S. Aeby, Robert J. Toonen
2011, PLoS ONE (6)
Montipora white syndrome (MWS) results in tissue-loss that is often lethal to Montipora capitata, a major reef building coral that is abundant and dominant in the Hawai'ian Archipelago. Within some MWS-affected colonies in Kane'ohe Bay, Oahu, Hawai'i, we saw unusual motile multicellular structures within gastrovascular canals (hereafter referred to as invasive gastrovascular...
Recent surface temperature trends in the interior of East Antarctica from borehole firn temperature measurements and geophysical inverse methods
A. Muto, T. A. Scambos, K. Steffen, A.G. Slater, Gary D. Clow
2011, Geophysical Research Letters (38)
We use measured firn temperatures down to depths of 80 to 90 m at four locations in the interior of Dronning Maud Land, East Antarctica to derive surface temperature histories spanning the past few decades using two different inverse methods. We find that the mean surface temperatures near the ice...
Sea ice loss enhances wave action at the Arctic coast
I. Overeem, R. Scott Anderson, C.W. Wobus, Gary D. Clow, Frank E. Urban, N. Matell
2011, Geophysical Research Letters (38)
Erosion rates of permafrost coasts along the Beaufort Sea accelerated over the past 50 years synchronously with Arctic‐wide declines in sea ice extent, suggesting a causal relationship between the two. A fetch‐limited wave model driven by sea ice position and local wind data from northern Alaska indicates that the exposure...
Effects of black bear relocation on elk calf recruitment at Great Smoky Mountains National Park
J. Yarkovich, J. D. Clark, J.L. Murrow
2011, Journal of Wildlife Management (75) 1145-1154
Previous research from 2001 to 2006 on an experimentally released elk (Cervus elaphus) population at Great Smoky Mountains National Park (GSMNP or Park) indicated that calf recruitment (i.e., calves reaching 1 yr of age per adult female elk) was low (0.306, total SE = 0.090) resulting in low or negative population growth...
Agricultural practices and residual corn during spring crane and waterfowl migration in Nebraska
Mark H. Sherfy, Michael J. Anteau, A.A. Bishop
2011, Journal of Wildlife Management (75) 995-1003
Nebraska's Central Platte River Valley (CPRV) is a major spring‐staging area for migratory birds. Over 6 million ducks, geese, and sandhill cranes (Grus canadensis) stage there en route to tundra, boreal forest, and prairie breeding habitats, storing nutrients for migration and reproduction by consuming primarily corn remaining in fields after...
A nuclear localization of the infectious haematopoietic necrosis virus NV protein is necessary for optimal viral growth
M.K. Choi, C. H. Moon, M.S. Ko, U.-H. Lee, W. Cho, S.J. Cha, J.W. Do, G.J. Heo, S.G. Jeong, Y.S. Hahm, A. Harmache, M. Bremont, Gael Kurath, J. W. Park
2011, PLoS ONE (6)
The nonvirion (NV) protein of infectious hematopoietic necrosis virus (IHNV) has been previously reported to be essential for efficient growth and pathogenicity of IHNV. However, little is known about the mechanism by which the NV supports the viral growth. In this study, cellular localization of NV and its role in...
The USGS geomagnetism program and its role in space weather monitoring
Jeffrey J. Love, Carol A. Finn
2011, Space Weather (9)
Magnetic storms result from the dynamic interaction of the solar wind with the coupled magnetospheric-ionospheric system. Large storms represent a potential hazard for the activities and infrastructure of a modern, technologically based society [Baker et al., 2008]; they can cause the loss of radio communications, reduce the accuracy of global...
Regional shoreline change and coastal erosion hazards in Arctic Alaska
Ann E. Gibbs, E. Lynne Harden, Bruce M. Richmond, Li H. Erikson
2011, Conference Paper, Solutions to Coastal Disasters 2011 - Proceedings of the 2011 Solutions to Coastal Disasters Conference
Historical shoreline positions along the mainland Beaufort Sea coast of Alaska were digitized and analyzed to determine the long-term rate of change. Average shoreline change rates and ranges from 1947 to the mid-2000s were determined every 50 meters between Barrow and Demarcation Point, at the U.S.-Canadian border. Results show that...
Formulation of a correlated variables methodology for assessment of continuous gas resources with an application to the Woodford play, Arkoma Basin, eastern Oklahoma
Ricardo A. Olea, D.W. Houseknecht, C.P. Garrity, T. A. Cook
2011, Boletin Geologico y Minero (122) 483-496
Shale gas is a form of continuous unconventional hydrocarbon accumulation whose resource estimation is unfeasible through the inference of pore volume. Under these circumstances, the usual approach is to base the assessment on well productivity through estimated ultimate recovery (EUR). Unconventional resource assessments that consider uncertainty are typically done by...
US geological survey Circum-Arctic Resource Appraisal (CARA): Introduction and summary of organization and methods
Ronald R. Charpentier, Donald L. Gautier
2011, Geological Society Memoir 145-150
The USGS has assessed undiscovered petroleum resources in the Arctic through geological mapping, basin analysis and quantitative assessment. The new map compilation provided the base from which geologists subdivided the Arctic for burial history modelling and quantitative assessment. The CARA was a probabilistic, geologically based study that used existing USGS...
Causes of systematic over- or underestimation of low streamflows by use of index-streamgage approaches in the United States
K. Eng, J.E. Kiang, Y.-Y. Chen, D.M. Carlisle, G.E. Granato
2011, Hydrological Processes (25) 2211-2220
Low-flow characteristics can be estimated by multiple linear regressions or the index-streamgage approach. The latter transfers streamflow information from a hydrologically similar, continuously gaged basin ('index streamgage') to one with a very limited streamflow record, but often results in biased estimates. The application of the index-streamgage approach can be generalized...
Whole-edifice ice volume change A.D. 1970 to 2007/2008 at Mount Rainier, Washington, based on LiDAR surveying
T. W. Sisson, J.E. Robinson, D.D. Swinney
2011, Geology (39) 639-642
Net changes in thickness and volume of glacial ice and perennial snow at Mount Rainier, Washington State, have been mapped over the entire edifice by differencing between a highresolution LiDAR (light detection and ranging) topographic survey of September-October 2007/2008 and the 10 m lateral resolution U.S. Geological Survey digital elevation...
Spatial modeling for groundwater arsenic levels in North Carolina
D. Kim, M.L. Miranda, J. Tootoo, P. Bradley, A.E. Gelfand
2011, Environmental Science & Technology (45) 4824-4831
To examine environmental and geologic determinants of arsenic in groundwater, detailed geologic data were integrated with well water arsenic concentration data and well construction data for 471 private wells in Orange County, NC, via a geographic information system. For the statistical analysis, the geologic units were simplified into four generalized...
Geology and petroleum potential of the east Barents Sea Basins and Admiralty Arch
T. R. Klett, Janet K. Pitman
2011, Geological Society Memoir 295-310
The US Geological Survey (USGS) recently assessed the potential for undiscovered oil and gas resources of the East Barents Basins and Novaya Zemlya Basins and Admiralty Arch Provinces as part of the USGS Circum-Arctic Resource Appraisal. These two provinces are located NE of Scandinavia and the northwestern Russian Federation, on...
An overview of the petroleum geology of the Arctic
A.M. Spencer, A.F. Embry, Donald L. Gautier, A.V. Stoupakova, K. Sorensen
2011, Geological Society Memoir 1-15
Nine main petroleum provinces containing recoverable resources totalling 61 Bbbl liquids+269 Bbbloe of gas are known in the Arctic. The three best known major provinces are: West Siberia–South Kara, Arctic Alaska and Timan–Pechora. They have been sourced principally from, respectively, Upper Jurassic, Triassic and Devonian marine source rocks and their...
Spawning habitat selection of hickory shad
Julianne E. Harris, Joseph E. Hightower
2011, North American Journal of Fisheries Management (31) 495-505
We examined the spawning habitat selectivity of hickory shad Alosa mediocris, an anadromous species on the Atlantic coast of North America. Using plankton tows and artificial substrates (spawning pads), we collected hickory shad eggs in the Roanoke River, North Carolina, to identify spawning timing, temperature, and microhabitat use. Hickory shad eggs...
Bounding species distribution models
Thomas J. Stohlgren, Catherine S. Jarnevich, Wayne E. Esaias, Jeffery T. Morisette
2011, Current Zoology (57) 642-647
Species distribution models are increasing in popularity for mapping suitable habitat for species of management concern. Many investigators now recognize that extrapolations of these models with geographic information systems (GIS) might be sensitive to the environmental bounds of the data used in their development, yet there is no recommended best...
Palaeotsunamis in the Pacific Islands
J. Goff, C. Chague-Goff, D. Dominey-Howes, B. McAdoo, S. Cronin, Michael M. Bonte-Grapetin M., S. Nichol, M. Horrocks, M. Cisternas, G. Lamarche, B. Pelletier, Bruce E. Jaffe, W. Dudley
2011, Earth-Science Reviews (107) 141-146
The recent 29 September 2009 South Pacific and 27 February 2010 Chilean events are a graphic reminder that the tsunami hazard and risk for the Pacific Ocean region should not be forgotten. Pacific Islands Countries (PICs) generally have short (< 150 years) historic records, which means that to understand their tsunami hazard...
Exploring geophysical processes influencing U.S. West Coast precipitation and water supply
F.M. Ralph, K. Prather, D. Cayan
2011, Eos, Transactions, American Geophysical Union (92) 352
CalWater Science Workshop; La Jolla, California, 8-10 June 2011 CalWater is a multiyear, multiagency research project with two primary research themes: the effects of changing climate on atmospheric rivers (ARs) and associated extreme events, and the potential role of aerosols in modulating cloud properties and precipitation, especially regarding orographic precipitation...
Exploring the sensitivity of soil carbon dynamics to climate change, fire disturbance and permafrost thaw in a black spruce ecosystem
J. A. O'Donnell, Jennifer W. Harden, A. David McGuire, V.E. Romanovsky
2011, Biogeosciences (8) 1367-1382
In the boreal region, soil organic carbon (OC) dynamics are strongly governed by the interaction between wildfire and permafrost. Using a combination of field measurements, numerical modeling of soil thermal dynamics, and mass-balance modeling of OC dynamics, we tested the sensitivity of soil OC storage to a suite of individual...
