Resilience of Alaska’s boreal forest to climatic change
F.S. Chapin, A. David McGuire, Roger W. Ruess, Teresa N. Hollingsworth, M.C. Mack, J.F. Johnstone, E.S. Kasischke, E.S. Euskirchen, Jack B. Jones, M.T. Jorgenson, K. Kielland, G. Kofinas, M.R. Turetsky, J. Yarie, A.H. Lloyd, D.L. Taylor
2010, Canadian Journal of Forest Research (40) 1360-1370
This paper assesses the resilience of Alaska’s boreal forest system to rapid climatic change. Recent warming is associated with reduced growth of dominant tree species, plant disease and insect outbreaks, warming and thawing of permafrost, drying of lakes, increased wildfire extent, increased postfire recruitment of deciduous trees, and reduced safety...
Occurrence of herbicides and pharmaceutical and personal care products in surface water and groundwater around Liberty Bay, Puget Sound, Washington
Jennifer A. Dougherty, Peter W. Swarzenski, Richard S. Dinicola, Martin Reinhard
2010, Journal of Environmental Quality (39) 1173-1180
Organic contaminants, such as pharmaceuticals and personal care products (PPCPs), pose a risk to water quality and the health of ecosystems. This study was designed to determine if a coastal community lacking point sources, such as waste water treatment plant effluent, could release PPCPs, herbicides, and plasticizers at detectable levels...
Pharmaceutical formulation facilities as sources of opioids and other pharmaceuticals to wastewater treatment plant effluents
Patrick J. Phillips, Steven G. Smith, Dana W. Kolpin, Brooke W. Stinson, Steven D. Zaugg, Herbert T. Buxton, Edward T. Furlong, Kathleen Esposito
2010, Environmental Science & Technology (44) 4910-4916
Facilities involved in the manufacture of pharmaceutical products are an under-investigated source of pharmaceuticals to the environment. Between 2004 and 2009, 35 to 38 effluent samples were collected from each of three wastewater treatment plants (WWTPs) in New York and analyzed for seven pharmaceuticals including opioids and muscle relaxants. Two...
Effects of climate change on saltwater intrusion at Hilton Head Island, SC. U.S.A.
Dorothy F. Payne
2010, Conference Paper, Proceedings of the 21st Salt Water Intrusion Meeting, Azores, Portugal, 2010
Sea‐level rise and changes in precipitation patterns may contribute to the occurrence and affect the rate of saltwater contamination in the Hilton Head Island, South Carolina area. To address the effects of climate change on saltwater intrusion, a threedimensional, finite‐element, variable‐density, solute‐transport model was developed to simulate different rates of...
Antibiotic fate and transport in three effluent-dominated Ozark streams
Leslie B. Massey, Brian E. Haggard, Joel M. Galloway, Keith A. Loftin, Michael T. Meyer, W. Reed Green
2010, Ecological Engineering (36) 930-938
Antibiotic transport downstream from a wastewater treatment plant effluent discharge was evaluated along stream reaches on Mud Creek, Spring Creek, and Decatur Branch in northwestern Arkansas, USA. Water and streambed samples were collected during August and September 2006 and analyzed for multiple antibiotics representing five classes (beta-lactams, macrolides, quinolones, sulfonamides, and tetracyclines). Antibiotics within the classes...
Identification of a novel arsenite oxidase gene, arxA, in the haloalkaliphilic, arsenite-oxidizing bacterium alkalilimnicola ehrlichii strain MLHE-1
Kamrun Zargar, Shelley E. Hoeft, Ronald S. Oremland, Chad W. Saltikov
2010, Journal of Bacteriology (192) 3755-3762
Although arsenic is highly toxic to most organisms, certain prokaryotes are known to grow on and respire toxic metalloids of arsenic (i.e., arsenate and arsenite). Two enzymes are known to be required for this arsenic-based metabolism: (i) the arsenate respiratory reductase (ArrA) and (ii) arsenite oxidase...
Reply to Comment on “Detrital U–Pb zircon dating of lower Ordovician syn-arc–continent collision conglomerates in the Irish Caledonides” by Peter D. Clift, Andrew Carter, Amy E. Draut, Hoang Van Long, David M. Chew, Hans A. Schouten, Tectonophysics 479 (2009), 165–174 (doi:10.1016/j.tecto.2008.07.018)
Peter D. Clift, Andrew Carter, Amy E. Draut, Hoang Van Long, Hans Schouten
2010, Tectonophysics (490) 138-139
No abstract available....
Channel geomorphic responses to disturbances assessed using streamgage information
Kyle E. Juracek, Mark W. Bowen
2010, Conference Paper, Proceedings of the 2nd Joint Federal Interagency Conference on Sedimentation and Hydrologic Modeling
No abstract available....
Visible and near-infrared multispectral analysis of geochemically measured rock fragments at the Opportunity landing site in Meridiani Planum
Catherine M. Weitz, William H. Farrand, Jeffrey R. Johnson, Iris Fleischer, Christian Schroder, Aileen Yingst, Bradley L. Jolliff, Ralf Gellert, Jim Bell, Kenneth E. Herkenhoff, G. Klingelhoefer, Barbara Cohen, Wendy M. Calvin, Malcolm Rutherford, James W. Ashley
2010, Journal of Geophysical Research E: Planets (115)
We have used visible and near‐infrared Panoramic Camera (Pancam) spectral data acquired by the Opportunity rover to analyze 15 rock fragments at the Meridiani Planum landing site. These spectral results were then compared to geochemistry measurements made by the in situ instruments Mössbauer (MB) and Alpha Particle X‐ray Spectrometer (APXS)...
Properties and distribution of paired candidate stony meteorites at Meridiani Planum
Christian Schroder, Kenneth E. Herkenhoff, William H. Farrand, John E. Chappelow, Wei Wang, L.R. Nittler, James W. Ashley, Iris Fleischer, Ralf Gellert, Matthew P. Golombek, Jeffrey R. Johnson, G. Klingelhoefer, Ron Li, Richard V. Morris, Steven W. Squyres
2010, Journal of Geophysical Research E: Planets (115)
The Mars Exploration Rover Opportunity investigated four rocks, informally dubbed Barberton, Santa Catarina, Santorini, and Kasos, that are possible stony meteorites. Their chemical and mineralogical composition is similar to the howardite, eucrite, and diogenite group but with additional metal, similar to mesosiderite silicate clasts. Because of their virtually identical composition...
Appendix A: Selected case studies of ecosystem contamination by selenium
Terry F. Young, Keith Finley, William J. Adams, John M. Besser, William A. Hopkins, Dianne Jolley, Eugenia McNaughton, Theresa S. Presser, D. Patrick Shaw, J. M. Unrine
Peter M. Chapman, William J. Adams, Marjorie L. Brooks, Charles G. Delos, Samuel N. Luoma, William A. Maher, Harry M. Ohlendorf, Theresa S. Presser, D. Patrick Shaw, editor(s)
2010, Book chapter, Ecological assessment of selenium in the aquatic environment
No abstract available....
Extending and testing Graizer-Kalkan ground motion attenuation model based on atlas database of shallow crustal events
Vladimir Graizer, Erol Kalkan, Kuo-Wan Lin
2010, Conference Paper, Proceedings of the 9th U.S. National and 10th Canadian Conference on Earthquake Engineering
No abstract available....
Gone with the wind: Eolian erasure of the Mars Rover tracks
Paul E. Geissler, R. Sullivan, M. Golombek, J. R. Johnson, Kenneth E. Herkenhoff, N. Bridges, Amy Vaughan, J. Maki, T. Parker, J. Bell
2010, Journal of Geophysical Research E: Planets (115)
The wheel tracks left by the Mars Exploration Rovers Spirit and Opportunity are unique artificial markings on the surface of Mars. The tracks stretch several kilometers across diverse terrain in two widely separated regions of the planet. The initial appearance and characteristics of the tracks were well documented by the...
Spirit Mars Rover Mission: Overview and selected results from the northern Home Plate Winter Haven to the side of Scamander crater
R. E. Arvidson, J.F. Bell III, P. Bellutta, N.A. Cabrol, J.G. Catalano, J. Cohen, L.S. Crumpler, D. J. Des Marais, T.A. Estlin, W.H. Farrand, R. Gellert, J. A. Grant, Rebecca N Greenberger, E.A. Guinness, Kenneth E. Herkenhoff, J.A. Herman, K.D. Iagnemma, J. R. Johnson, G. Klingelhoefer, K.A. Lichtenberg, S.A. Maxwell, D. W. Ming, R.V. Morris, M.S. Rice, S. W. Ruff, A. Shaw, Kirsten L. Siebach, Paulo A. de Souza Jr., A.W. Stroupe, S. W. Squyres, R.J. Sullivan, K.P. Talley, J.A. Townsend, A. Wang, J.R. Wright, A. S. Yen
2010, Journal of Geophysical Research E: Planets (115)
This paper summarizes Spirit Rover operations in the Columbia Hills, Gusev crater, from sol 1410 (start of the third winter campaign) to sol 2169 (when extrication attempts from Troy stopped to winterize the vehicle) and provides an overview of key scientific results. The third winter campaign took advantage of parking...
A hybrid finite-difference and analytic element groundwater model
Henk M. Haitjema, Daniel T. Feinstein, Randall J. Hunt, Maksym Gusyev
2010, Groundwater (48) 538-548
Regional finite-difference models tend to have large cell sizes, often on the order of 1–2 km on a side. Although the regional flow patterns in deeper formations may be adequately represented by such a model, the intricate surface water and groundwater interactions in the shallower layers are not. Several stream...
Climate change and climate systems influence and control the atmospheric dispersion of desert dust: implications for human health
Dale W. Griffin
Richard C. Ragaini, editor(s)
2010, Conference Paper, International Seminar on Nuclear War and Planetary Emergencies 42nd session
The global dispersion of desert dust through Earth’s atmosphere is greatly influenced by temperature. Temporal analyses of ice core data have demonstrated that enhanced dust dispersion occurs during glacial events. This is due to an increase in ice cover, which results in an increase in drier terrestrial cover. A shorter...
Using a composite grid approach in a complex coastal domain to estimate estuarine residence time
John C. Warner, W. Rockwell Geyer, Herman G. Arango
2010, Computers & Geosciences (36) 921-935
We investigate the processes that influence residence time in a partially mixed estuary using a three-dimensional circulation model. The complex geometry of the study region is not optimal for a structured grid model and so we developed a new method of grid connectivity. This involves a novel approach that allows...
Microbial carbon cycling in oligotrophic regional aquifers near the Tono Uranium Mine, Japan as inferred from δ13C and Δ14C values of in situ phospholipid fatty acids and carbon sources
Christopher T. Mills, Yuki Amano, Gregory F. Slater, Robert F. Dias, Teruki Iwatsuki, Kevin W. Mandernack
2010, Geochimica et Cosmochimica Acta (74) 3785-3805
Microorganisms are ubiquitous in deep subsurface environments, but their role in the global carbon cycle is not well-understood. The natural abundance δ13C and Δ14C values of microbial membrane phospholipid fatty acids (PLFAs) were measured and used to assess the carbon sources of bacteria in sedimentary and granitic groundwaters sampled from...
A probabilistic assessment methodology for the evaluation of geologic carbon dioxide storage
Sean T. Brennan, Robert A. Burruss, Matthew D. Merrill, Philip A. Freeman, Leslie F. Ruppert
2010, Open-File Report 2010-1127
In 2007, the Energy Independence and Security Act (Public Law 110-140) authorized the U.S. Geological Survey (USGS) to conduct a national assessment of potential geologic storage resources for carbon dioxide (CO2) in cooperation with the U.S. Environmental Protection Agency and the U.S. Department of Energy. The first year of that...
Seismicity of the Earth 1900-2010, Aleutian arc and vicinity
Harley M. Benz, Matthew Herman, Arthur C. Tarr, Gavin P. Hayes, Kevin P. Furlong, Antonio Villaseñor, Richard L. Dart, Susan Rhea
2010, Open-File Report 2010-1083-B
This map shows details of the Aleutian arc not visible in an earlier publication. The Aleutian arc extends about 3,000 km from the Gulf of Alaska to the Kamchatka Peninsula. It marks the region where the Pacific plate subducts into the mantle beneath the North America plate. This subduction is...
The use of the multi-dimensional surface-water modeling system (MD-SWMS) in calculating discharge and sediment transport in remote ephemeral streams
Peter G. Griffiths, David J. Topping, Richard R. McDonald, Thomas A. Sabol
2010, Conference Paper, Proceedings of the Joint Federal Interagency Conference 2010: Hydrology and sedimentation for a changing future: Existing and emerging issues
No abstract available....
Grain-size evolution in suspended sediment and deposits from the 2004 and 2008 controlled-flood experiments in Marble and Grand Canyons, Arizona
Amy E. Draut, David J. Topping, David M. Rubin, Scott Wright, John C. Schmidt
2010, Conference Paper, Proceedings of the Joint Federal Interagency Conference 2010: Hydrology and sedimentation for a changing future: Existing and emerging issues
Since the closure of Glen Canyon Dam in 1963, the hydrology, sediment supply, and distribution and size of modern alluvial deposits in the Colorado River through Grand Canyon have changed substantially (e.g., Howard and Dolan, 1981; Johnson and Carothers, 1987; Webb et al., 1999; Rubin et al., 2002; Topping et...
Evolving fluvial response of the Sandy River, Oregon, following removal of Marmot Dam
Jon J. Major, Jim O’Connor, Charles J. Podolak, Mackenzie K. Keith, Kurt R. Spicer, J. Rose Wallick, Heather M. Bragg, Smokey Pittman, Peter R. Wilcock, Abagail Rhode, Gordon E. Grant
2010, Conference Paper, Proceedings of the Joint Federal Interagency Conference 2010: Hydrology and sedimentation for a changing future: Existing and emerging issues
The October 2007 removal of Marmot Dam on the Sandy River, Oregon, triggered a rapid sequence of fluvial responses as ~730,000 m3 of sand and gravel that filled the former reservoir were suddenly exposed to an energetic river. Using direct measurements of sediment transport, photogrammetry, and repeat surveys between transport...
Discriminating silt-and-clay from suspended-sand in rivers using side-looking acoustic profilers
Scott Wright, David J. Topping, Cory A. Williams
2010, Conference Paper, Proceedings of the Joint Federal Interagency Conference 2010: Hydrology and sedimentation for a changing future: Existing and emerging issues
The ability to accurately monitor suspended-sediment flux in rivers is needed to support many types of studies, because the sediment that typically travels in suspension affects geomorphology and aquatic habitat in a variety of ways (e.g. bank and floodplain deposition, bar morphology, light penetration and primary productivity, tidal wetland deposition...
Hydraulic alterations resulting from hydropower development in the Bonneville Reach of the Columbia River
James R. Hatten, Thomas R. Batt
2010, Northwest Science (84) 207-222
We used a two-dimensional (2D) hydrodynamic model to simulate and compare the hydraulic characteristics in a 74-km reach of the Columbia River (the Bonneville Reach) before and after construction of Bonneville Dam. For hydrodynamic modeling, we created a bathymetric layer of the Bonneville Reach from single-beam and multi-beam echo-sounder surveys,...
