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 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...
Geographic variation in the plumage coloration of willow flycatchers Empidonax traillii
Eben H. Paxton, Mark K. Sogge, Thomas J. Koronkiewicz, Mary Anne McLeod, Tad C. Theimer
2010, Journal of Avian Biology (41) 128-138
The ability to identify distinct taxonomic groups of birds (species, subspecies, geographic races) can advance ecological research efforts by determining connectivity between the non-breeding and breeding grounds for migrant species, identifying the origin of migrants, and helping to refine boundaries between subspecies or geographic races. Multiple methods are available to...
Developmental changes in serum androgen levels of Eastern Screech-Owls (Megascops asio)
Corinne P. Kozlowski, D. Caldwell Hahn
2010, Wilson Journal of Ornithology (122) 755-761
We studied androgen production during development in nestling Eastern Screech-Owls (Megascops asio) and hypothesized that gender and hatch order might influence serum levels of testosterone and androstenedione. Testosterone levels were highest immediately after hatching and declined significantly in the 4 weeks leading to fledging. The average level of testosterone for...
Contribution of PAHs from coal-tar pavement sealcoat and other sources to 40 U.S. lakes
Peter C. Van Metre, Barbara Mahler
2010, Science of the Total Environment (409) 334-344
Contamination of urban lakes and streams by polycyclic aromatic hydrocarbons (PAHs) has increased in the United States during the past 40 years. We evaluated sources of PAHs in post-1990 sediments in cores from 40 lakes in urban areas across the United States using a contaminant mass-balance receptor model and including...
A review of sediment budget imbalances along Fire Island, New York: Can nearshore geologic framework and patterns of shoreline change explain the deficit?
Cheryl J. Hapke, Erika E. Lentz, Paul T. Gayes, Clayton A. McCoy, Rachel E. Henderson, William C. Schwab, S. Jeffress Williams
2010, Journal of Coastal Research (26) 510-522
Sediment budget analyses conducted for annual to decadal timescales report variable magnitudes of littoral transport along the south shore of Long Island, New York. It is well documented that the primary transport component is directed alongshore from east to west, but relatively little information has been reported concerning the directions...
A rapid method for the measurement of sulfur hexafluoride (SF6), trifluoromethyl sulfur pentafluoride (SF5CF3), and Halon 1211 (CF2ClBr) in hydrologic tracer studies
Eurybiades Busenberg, Niel Plummer
2010, Geochemistry, Geophysics, Geosystems (11)
A rapid headspace method for the simultaneous laboratory determination of intentionally introduced hydrologic tracers, sulfur hexafluoride (SF6), trifluoromethyl sulfur pentafluoride (SF5CF3), Halon 1211 (CF2ClBr), and other halocarbons in water and gases is described. The high sensitivity of the procedure allows for introduction of minimal tracer mass (a few grams) into...
Beyond Colorado's Front Range - A new look at Laramide basin subsidence, sedimentation, and deformation in north-central Colorado
James C. Cole, James H. Trexler Jr., Patricia H. Cashman, Ian M. Miller, Ralph R. Shroba, Michael A. Cosca, Jeremiah B. Workman
2010, Book chapter, GSA field guide: Through the generations
This field trip highlights recent research into the Laramide uplift, erosion, and sedimentation on the western side of the northern Colorado Front Range. The Laramide history of the North Park-Middle Park basin (designated the Colorado Headwaters Basin in this paper) is distinctly different from that of the Denver basin on...
A long-term vegetation history of the Mojave-Colorado Desert ecotone at Joshua Tree National Park
Camille A. Holmgren, Julio L. Betancourt, Kate A. Rylander
2010, Journal of Quaternary Science (25) 222-236
Thirty-eight dated packrat middens were collected from upper desert (930–1357 m) elevations within Joshua Tree National Park near the ecotone between the Mojave Desert and Colorado Desert, providing a 30 ka record of vegetation change with remarkably even coverage for the last 15 ka. This record indicates that vegetation was relatively stable, which...
Potentiometric Surface of the Aquia Aquifer in Southern Maryland, September 2009
Stephen E. Curtin, David C. Andreasen, Andrew W. Staley
2010, Open-File Report 2010-1201
This report presents a map showing the potentiometric surface of the Aquia aquifer in the Aquia Formation of Paleocene age in Southern Maryland during September 2009. The map is based on water-level measurements in 82 wells. The highest measured water level was 48 feet above sea level near the northern...
EAARL coastal topography-Cape Hatteras National Seashore, North Carolina, post-Nor'Ida, 2009: first surface
J.M. Bonisteel-Cormier, Amar Nayegandhi, J. C. Brock, C. W. Wright, D.B. Nagle, Xan Fredericks, Sara Stevens
2010, Data Series 564
These remotely sensed, geographically referenced elevation measurements of lidar-derived first-surface (FS) topography datasets were produced collaboratively by the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL, and the National Park Service (NPS), Northeast Coastal and Barrier Network, Kingston, RI. This project provides highly detailed...
EAARL Coastal Topography-Eastern Florida, Post-Hurricane Jeanne, 2004: First Surface
Xan Fredericks, Amar Nayegandhi, J.M. Bonisteel-Cormier, C. W. Wright, A. H. Sallenger, J. C. Brock, E.S. Klipp, D.B. Nagle
2010, Data Series 561
These remotely sensed, geographically referenced elevation measurements of lidar-derived first-surface (FS) topography datasets were produced collaboratively by the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL, and the National Aeronautics and Space Administration (NASA), Wallops Flight Facility, VA. This project provides highly detailed and...
EAARL Coastal Topography-Maryland and Delaware, Post-Nor'Ida, 2009
J.M. Bonisteel-Cormier, Saisudha Vivekanandan, Amar Nayegandhi, A. H. Sallenger, C. W. Wright, J. C. Brock, D.B. Nagle, E.S. Klipp
2010, Data Series 562
These remotely sensed, geographically referenced elevation measurements of lidar-derived bare-earth (BE) and first-surface (FS) topography datasets were produced by the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL. This project provides highly detailed and accurate datasets of a portion of the eastern Maryland and...
EAARL Coastal Topography and Imagery-Assateague Island National Seashore, Maryland and Virginia, Post-Nor'Ida, 2009
J.M. Bonisteel-Cormier, Amar Nayegandhi, J. C. Brock, C. W. Wright, D.B. Nagle, E.S. Klipp, Saisudha Vivekanandan, Xan Fredericks, Sara Stevens
2010, Data Series 559
These remotely sensed, geographically referenced color-infrared (CIR) imagery and elevation measurements of lidar-derived bare-earth (BE) and first-surface (FS) topography datasets were produced collaboratively by the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL, and the National Park Service (NPS), Northeast Coastal and Barrier Network,...
EAARL Coastal Topography-Eastern Louisiana Barrier Islands, Post-Hurricane Gustav, 2008: First Surface
J.M. Bonisteel-Cormier, Amar Nayegandhi, C. W. Wright, A. H. Sallenger, J. C. Brock, D.B. Nagle, Saisudha Vivekanandan, Xan Fredericks
2010, Data Series 560
These remotely sensed, geographically referenced elevation measurements of lidar-derived first-surface (FS) topography datasets were produced collaboratively by the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL, and the National Aeronautics and Space Administration (NASA), Wallops Flight Facility, VA. This project provides highly detailed and...
EAARL Coastal Topography-Sandy Hook Unit, Gateway National Recreation Area, New Jersey, Post-Nor'Ida, 2009
Amar Nayegandhi, Saisudha Vivekanandan, J. C. Brock, C. W. Wright, J.M. Bonisteel-Cormier, D.B. Nagle, E.S. Klipp, Sara Stevens
2010, Data Series 557
These remotely sensed, geographically referenced elevation measurements of lidar-derived bare-earth (BE) and first-surface (FS) topography datasets were produced collaboratively by the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL, and the National Park Service (NPS), Northeast Coastal and Barrier Network, Kingston, RI. This project...
EAARL Coastal Topography-Fire Island National Seashore, New York, Post-Nor'Ida, 2009
Amar Nayegandhi, Saisudha Vivekanandan, J. C. Brock, C. W. Wright, D.B. Nagle, J.M. Bonisteel-Cormier, Xan Fredericks, Sara Stevens
2010, Data Series 558
These remotely sensed, geographically referenced elevation measurements of lidar-derived bare-earth (BE) and first-surface (FS) topography datasets were produced collaboratively by the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL, and the National Park Service (NPS), Northeast Coastal and Barrier Network, Kingston, RI. This project...
Geologic map of the Bartlett Springs Fault Zone in the vicinity of Lake Pillsbury and adjacent areas of Mendocino, Lake, and Glenn Counties, California
Henry N. Ohlin, Robert J. McLaughlin, Barry C. Moring, Thomas L. Sawyer
2010, Open-File Report 2010-1301
The Lake Pillsbury area lies in the eastern part of the northern California Coast Ranges, along the east side of the transform boundary between the Pacific and North American plates (fig. 1). The Bartlett Springs Fault Zone is a northwest-trending zone of faulting associated with this eastern part of the...
Preliminary Assessment of the Hydrogeology and Groundwater Availability in the Metamorphic and Siliciclastic Fractured-Rock Aquifer Systems of Warren County, Virginia
David L. Nelms, Roger M. Moberg
2010, Scientific Investigations Report 2010-5190
Expanding development and the prolonged drought from 1999 to 2002 drew attention to the quantity and sustainability of the groundwater resources in Warren County, Virginia. The groundwater flow systems of the county are complex and are controlled by the extremely folded and faulted geology that underlies the county. A study...
Current distribution of North American river otters in central and eastern Oklahoma, with seven new county records
Dominic A. Barrett, David M. Leslie Jr.
2010, Occasional Papers of the Museum at Texas Tech University (294) 1-13
In 1984 and 1985, the Oklahoma Department of Wildlife Conservation reintroduced North American river otters (Lontra canadensis) from coastal Louisiana into eastern Oklahoma. Those reintroductions and immigration from Arkansas and possibly northeastern Texas allowed river otters to become reestablished in eastern Oklahoma. Our goals were to determine the contemporary distribution...
