Group on Earth Observations (GEO) global drought early warning information service
W. Pozzi, D. Cripe, J. Vogt, M. Werner, R. Heim, M.J. Brewer, J. Sheffield, R. Westerhoff, R. Stefanski, M. Svoboda, J. Verdin
2011, Conference Paper, 2011 GEOSS Workshop XL - Managing Drought through Earth Observation, GEOSS 2011
[No abstract available]...
Science as a fundamental framework for shaping policy discussions regarding the use of groundwater in the State of Michigan: A case study
A.D. Steinman, J.R. Nicholas, P.W. Seelbach, J.W. Allan, F. Ruswick
2011, Water Policy (13) 69-86
The availability and use of freshwater is a growing concern in the United States and around the globe. Despite apparently abundant water resources, several conflicts over water use have emerged in the Great Lakes region and the State of Michigan. These conflicts resulted in state legislation that both addresses water...
Volcanism on Io: New insights from global geologic mapping
David A. Williams, Laszlo P. Keszthelyi, David A. Crown, Jessica A. Yff, Windy L. Jaeger, Paul M. Schenk, Paul E. Geissler, Tammy L. Becker
2011, Icarus (214) 91-112
We produced the first complete, 1:15 M-scale global geologic map of Jupiter’s moon Io, based on a set of monochrome and color Galileo–Voyager image mosaics produced at a spatial resolution of 1 km/pixel. The surface of Io was mapped into 19 units based on albedo, color and surface morphology, and is subdivided as follows:...
Tsunami inundation and sediment transport in a sediment-limited embayment on American Samoa
A. Apotsos, G. Gelfenbaum, B. Jaffe, Sebastian Watt, B. Peck, M. Buckley, A. Stevens
2011, Earth-Science Reviews (107) 1-11
Field observations and numerical simulations are used to explore tsunami inundation and sediment transport in an embayment (Fagafue Bay) on the north side of Tutuila, American Samoa during the 29 September 2009 South Pacific tsunami. Field observations of the nearshore bathymetry and topography, tsunami flow depth and sediment deposition, and...
Comparative mobility of sulfonamides and bromide tracer in three soils
S.T. Kurwadkar, C.D. Adams, Michael T. Meyer, Dana W. Kolpin
2011, Journal of Environmental Management (92) 1874-1881
In animal agriculture, sulfonamides are one of the routinely used groups of antimicrobials for therapeutic and sub-therapeutic purposes. It is observed that, the animals when administered the antimicrobials, often do not completely metabolize them; and excrete the partially metabolized forms into the environment. Due to the continued use of antimicrobials...
Effects of fringing reefs on tsunami inundation: American Samoa
G. Gelfenbaum, A. Apotsos, A.W. Stevens, B. Jaffe
2011, Earth-Science Reviews (107) 12-22
A numerical model of tsunami inundation, Delft3D, which has been validated for the 29 September 2009 tsunami in Tutuila, American Samoa, is used to better understand the impact of fringing coral reefs and embayments on tsunami wave heights, inundation distances, and velocities. The inundation model is used to explore the...
Impacts of changing food webs in Lake Ontario: Implications of dietary fatty acids on growth of alewives
R.J. Snyder, C.J. Demarche, D. C. Honeyfield
2011, Aquatic Ecosystem Health & Management (14) 231-238
Declines in the abundance and condition of Great Lakes Alewives have been reported periodically during the last two decades, and the reasons for these declines remain unclear. To better understand how food web changes may influence Alewife growth and Wisconsin growth model predictions, we fed Alewives isocaloric diets high in...
Turtles and culverts, and alternative energy development: an unreported but potentially significant mortality threat to the desert tortoise (Gopherus agassizii)
J.E. Lovich, J.R. Ennen, S. Madrak, B. Grover
2011, Chelonian Conservation and Biology (10) 124-129
Culverts are often used to increase the permeability of roaded landscapes for wildlife, including turtles. Although the benefits of culverts as safe passages for turtles are well documented, under some conditions culverts can entrap them and cause mortality. Here we report a culvert-related mortality in the federally threatened desert tortoise...
Resource selection by black-footed ferrets in South Dakota and Montana
D.S. Jachowski, J.J. Millspaugh, E. Biggins, T.M. Livieri, Marc R. Matchett, C.D. Rittenhouse
2011, Natural Areas Journal (31) 218-225
The black-footed ferret (Mustela nigripes), once extinct in the wild, remains one of the most critically endangered mammals in North America despite 18 years of reintroduction attempts. Because black-footed ferrets are specialized predators of prairie dogs (Cynomys sp.), a better understanding of how black-footed ferrets select resources might provide insight...
Using normalized difference vegetation index to estimate carbon fluxes from small rotationally grazed pastures
R.H. Skinner, B.K. Wylie, T.G. Gilmanov
2011, Agronomy Journal (103) 972-979
Satellite-based normalized difference vegetation index (NDVI) data have been extensively used for estimating gross primary productivity (GPP) and yield of grazing lands throughout the world. However, the usefulness of satellite-based images for monitoring rotationally-grazed pastures in the northeastern United States might be limited because paddock size is often smaller than...
Early in-flight detection of SO2 via Differential Optical Absorption Spectroscopy: A feasible aviation safety measure to prevent potential encounters with volcanic plumes
L. Vogel, B. Galle, C. Kern, Granados H. Delgado, V. Conde, P. Norman, S. Arellano, O. Landgren, P. Lubcke, Nieves J.M. Alvarez, Gonzales L. Cardenas, U. Platt
2011, Atmospheric Measurement Techniques Discussions (4) 2827-2881
Volcanic ash constitutes a risk to aviation, mainly due to its ability to cause jet engines to fail. Other risks include the possibility of abrasion of windshields and potentially serious damage to avionic systems. These hazards have been widely recognized 5 since the early 1980s, when volcanic ash provoked several...
The Christiansen Effect in Saturn's narrow dusty rings and the spectral identification of clumps in the F ring
M.M. Hedman, P. D. Nicholson, M.R. Showalter, R. H. Brown, B. J. Buratti, R. N. Clark, K. Baines, Christophe Sotin
2011, Icarus (215) 695-711
Stellar occultations by Saturn’s rings observed with the Visual and Infrared Mapping Spectrometer (VIMS) onboard the Cassini spacecraft reveal that dusty features such as the F ring and the ringlets in the Encke and the Laplace Gaps have distinctive infrared transmission spectra. These spectra show a narrow optical depth minimum...
An analytical framework to assist decision makers in the use of forest ecosystem model predictions
Guy R. Larocque, Jagtar S. Bhatti, J.C. Ascough, J. Liu, N. Luckai, D. Mailly, L. Archambault, Andrew M. Gordon
2011, Environmental Modelling and Software (26) 280-288
The predictions from most forest ecosystem models originate from deterministic simulations. However, few evaluation exercises for model outputs are performed by either model developers or users. This issue has important consequences for decision makers using these models to develop natural resource management policies, as they cannot evaluate the extent to...
Threshold responses of songbirds to long-term timber management on an active industrial forest
Douglas A. Becker, Petra Bohall Wood, Patrick D. Keyser, T. Bently Wigley, Rachel Dellinger, Cathy A. Weakland
2011, Forest Ecology and Management (262) 449-460
Forest managers often seek to balance economic benefits from timber harvesting with maintenance of habitat for wildlife, ecosystem function, and human uses. Most research on the relationship between avian abundance and active timber management has been short-term, lasting one to two years, creating the need to investigate long-term avian responses...
Adaptive finite volume methods with well-balanced Riemann solvers for modeling floods in rugged terrain: Application to the Malpasset dam-break flood (France, 1959)
D.L. George
2011, International Journal for Numerical Methods in Fluids (66) 1000-1018
The simulation of advancing flood waves over rugged topography, by solving the shallow-water equations with well-balanced high-resolution finite volume methods and block-structured dynamic adaptive mesh refinement (AMR), is described and validated in this paper. The efficiency of block-structured AMR makes large-scale problems tractable, and allows the use of accurate and...
The academic road less traveled
D.A. James
2011, Fisheries (36) 351-352
[No abstract available]...
Eruptive history of South Sister, Oregon Cascades
J. Fierstein, W. Hildreth, A.T. Calvert
2011, Journal of Volcanology and Geothermal Research (207) 145-179
South Sister is southernmost and highest of the Three Sisters, three geologically dissimilar stratovolcanoes that together form a spectacular 20km reach along the Cascade crest in Oregon. North Sister is a monotonously mafic edifice as old as middle Pleistocene, Middle Sister a basalt-andesite-dacite cone built between 48 and 14ka, and...
Status and distribution of the Kittlitz's Murrelet Brachyramphus brevirostris along the Alaska Peninsula and Kodiak and Aleutian Islands, Alaska
Erica N. Madison, John F. Piatt, Mayumi L. Arimitsu, Marc D. Romano, Thomas I. van Pelt, S. Kim Nelson, Jeffrey C. Williams, Anthony R. DeGange
2011, Marine Ornithology: Journal of Seabird Research and Conservation (39) 111-122
The Kittlitz's Murrelet Brachyramphus brevirostris is adapted for life in glacial-marine ecosystems, being concentrated in the belt of glaciated fjords in the northern Gulf of Alaska from Glacier Bay to Cook Inlet. Most of the remaining birds are scattered along coasts of the Alaska Peninsula and Aleutian Islands, where they...
Development and application of a pollen-based paleohydrologic reconstruction from the lower Roanoke River Basin, North Carolina, USA
D. Willard, C. Bernhardt, R. Brown, B. Landacre, P. Townsend
2011, The Holocene (21) 305-317
We used pollen assemblages to reconstruct late-Holocene paleohydrologic patterns in floodplain deposits from the lower Roanoke River basin (North Carolina, southeastern USA). Using 120 surface samples from 38 transects, we documented statistical relationships between pollen assemblages, vegetation, and landforms. Backswamp pollen assemblages (long hydroperiods) are dominated by Nyssa (tupelo) and...
Regional long-term production modeling from a single well test, Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope
B.J. Anderson, M. Kurihara, M.D. White, G. J. Moridis, S.J. Wilson, M. Pooladi-Darvish, M. Gaddipati, Y. Masuda, Timothy S. Collett, R.B. Hunter, H. Narita, K. Rose, R. Boswell
2011, Marine and Petroleum Geology (28) 493-501
Following the results from the open-hole formation pressure response test in the BPXA-DOE-USGS Mount Elbert Gas Hydrate Stratigraphic Test Well (Mount Elbert well) using Schlumberger's Modular Dynamics Formation Tester (MDT) wireline tool, the International Methane Hydrate Reservoir Simulator Code Comparison project performed long-term reservoir simulations on three different model reservoirs....
Atacamite and paratacamite from the ultramafic-hosted Logatchev seafloor vent field (14°45′N, Mid-Atlantic Ridge)
Vesselin Dekov, Tanya Boycheva, Ulf Halenius, Sven Petersen, Kjell Billstrom, Jens Stummeyer, G. Kamenov, W. Shanks
2011, Chemical Geology (286) 169-184
Atacamite and paratacamite are ubiquitous minerals associated with Cu-rich massive sulfides at the Logatchev hydrothermal field (Mid-Atlantic Ridge). In this work we provide new details on the mineralogy and geochemistry of these basic cupric chlorides. Our data support the notion that atacamite and paratacamite formation at submarine vent fields is...
Calibration of Nu-Instruments Noblesse multicollector mass spectrometers for argon isotopic measurements using a newly developed reference gas
M.A. Coble, M. Grove, A.T. Calvert
2011, Chemical Geology (290) 75-87
The greatest challenge limiting 40Ar/39Ar multicollection measurements is the availability of appropriate standard gasses to intercalibrate detectors. In particular, use of zoom lens ion-optics to steer and focus ion beams into a fixed detector array (i.e., Nu Instruments Noblesse) makes intercalibration of multiple detectors challenging because different ion-optic tuning conditions are...
A Web-Based Decision Support System for Assessing Regional Water-Quality Conditions and Management Actions
N.L. Booth, E.J. Everman, I.-L. Kuo, L. Sprague, L. Murphy
2011, Journal of the American Water Resources Association (47) 1136-1150
The U.S. Geological Survey National Water Quality Assessment Program has completed a number of water-quality prediction models for nitrogen and phosphorus for the conterminous United States as well as for regional areas of the nation. In addition to estimating water-quality conditions at unmonitored streams, the calibrated SPAtially Referenced Regressions On...
Mercury in coals and fly ashes from Republika and Bobov dol thermoelectric power plants
I. Kostova, C. Vassileva, J. Hower, Maria Mastalerz, S. Vassilev, N. Nikolova
2011, Comptes Rendus de L'Academie Bulgare des Sciences (64) 253-262
Feed coal and y ash samples were collected at Republika and Bobov Dol thermoelectric power plants (TPPs). The y ashes (FAs) were collected fromthree rows of the hot-side electrostatic precipitators (ESPs) array. Each sam- ple was wet-screened at 100, 200, 325 and 500 mesh. The coals and y ashes were...
Introduction to the featured collection on "nonstationarity, hydrologic frequency analysis, and water management"
J.E. Kiang, J.R. Olsen, R.M. Waskom
2011, Journal of the American Water Resources Association (47) 433-435
[No abstract available]...
