Shallow conduit system at Kilauea Volcano, Hawaii, revealed by seismic signals associated with degassing bursts
Bernard Chouet, Phillip Dawson
2011, Journal of Geophysical Research B: Solid Earth (116) B12317
Eruptive activity at the summit of Kilauea Volcano, Hawaii, beginning in March, 2008 and continuing to the present time is characterized by episodic explosive bursts of gas and ash from a vent within Halemaumau Pit Crater. These bursts are accompanied by seismic signals that are well recorded by a broadband...
Distribution and seasonal dynamics of arsenic in a shallow lake in northwestern New Jersey, USA
J. L. Barringer, Z. Szabo, T.P. Wilson, J.L. Bonin, T. Kratzer, K. Cenno, T. Romagna, M. Alebus, B. Hirst
2011, Environmental Geochemistry and Health (33) 1-22
Elevated concentrations of arsenic (As) occurred during warm months in water from the outlet of Lake Mohawk in northwestern New Jersey. The shallow manmade lake is surrounded by residential development and used for recreation. Eutrophic conditions are addressed by alum and copper sulfate applications and aerators operating in the summer....
Fish as major carbonate mud producers and missing components of the tropical carbonate factory
C.T. Perry, M.A. Salter, A.R. Harborne, S.F. Crowley, Howard L. Jelks, R.W. Wilson
2011, Proceedings of the National Academy of Sciences of the United States of America (108) 3865-3869
Carbonate mud is a major constituent of recent marine carbonate sediments and of ancient limestones, which contain unique records of changes in ocean chemistry and climate shifts in the geological past. However, the origin of carbonate mud is controversial and often problematic to resolve. Here we show that tropical marine...
Ecology of invasive Melilotus albus on Alaskan glacial river floodplains
Jeff S. Conn, Nancy R. Werdin-Pfisterer, Katherine L. Beattie, Roseann V. Densmore
2011, Arctic, Antarctic, and Alpine Research (43) 343-354
Melilotus albus (white sweetclover) has invaded Alaskan glacial river floodplains. We measured cover and density of plant species and environmental variables along transects perpendicular to the Nenana, Matanuska, and Stikine Rivers to study interactions between M. albus and other plant species and to characterize the environment where it establishes. Melilotus albus was a pioneer species...
An Analysis of the Published Mineral Resource Estimates of the Haji-Gak Iron Deposit, Afghanistan
David M. Sutphin, Karine Renaud, Lawrence J. Drew
2011, Natural Resources Research (20) 329-353
The Haji-Gak iron deposit of eastern Bamyan Province, eastern Afghanistan, was studied extensively and resource calculations were made in the 1960s by Afghan and Russian geologists. Recalculation of the resource estimates verifies the original estimates for categories A (in-place resources known in detail), B (in-place resources known in moderate detail),...
Establishing spatial trends in water chemistry and stable isotopes (δ15N and δ13C) in the Elwha River prior to dam removal and salmon recolonization
J.J. Duda, H.J. Coe, S.A. Morley, K.K. Kloehn
2011, River Research and Applications (27) 1169-1181
Two high-head dams on the Elwha River in Washington State (USA) have changed the migratory patterns of resident and anadromous fish, limiting Pacific salmon to the lower 7.9 km of a river that historically supported large Pacific salmon runs. To document the effects of the dams prior to their removal, we...
A synthesis: Informing collaborative conservation and management of Colorado Plateau resources
Miguel L. Villarreal, Charles van Riper III, Carena J. van Riper, Matthew J. Johnson, S. Shane Selleck
Miguel L. Villarreal, Matthew J. Johnson, Charles van Riper III, editor(s)
2011, Book chapter, The Colorado Plateau V: Research, environmental planning, and management for collaborative conservation
No abstract available....
Development of an aquatic pathogen database (AquaPathogen X) and its utilization in tracking emerging fish virus pathogens in North America
E.J. Emmenegger, E. Kentop, T.M. Thompson, S. Pittam, A. Ryan, D. Keon, J.A. Carlino, J. Ranson, R.B. Life, R.M. Troyer, K.A. Garver, Gael Kurath
2011, Journal of Fish Diseases (34) 579-587
The AquaPathogen X database is a template for recording information on individual isolates of aquatic pathogens and is freely available for download (http://wfrc.usgs.gov). This database can accommodate the nucleotide sequence data generated in molecular epidemiological studies along with the myriad of abiotic and biotic traits associated with isolates of various...
Climate change, atmospheric rivers, and floods in California - a multimodel analysis of storm frequency and magnitude changes
Michael D. Dettinger
2011, Journal of the American Water Resources Association (47) 514-523
Recent studies have documented the important role that “atmospheric rivers” (ARs) of concentrated near‐surface water vapor above the Pacific Ocean play in the storms and floods in California, Oregon, and Washington. By delivering large masses of warm, moist air (sometimes directly from the Tropics), ARs establish conditions for the kinds...
Assessment and distribution of antimony in soils around three coal mines, Anhui, China
C. Qi, Gaisheng Liu, Y. Kang, P.K.S. Lam, C. Chou
2011, Journal of the Air and Waste Management Association (61) 850-857
Thirty-three soil samples were collected from the Luling, Liuer, and Zhangji coal mines in the Huaibei and Huainan areas of Anhui Province, China. The samples were analyzed for antimony (Sb) by inductively coupled plasma-optical emission spectrometry (ICP-OES) method. The average Sb content in the 33 samples was 4 mg kg−1,...
Transient electromagnetic study of basin fill sediments in the Upper San Pedro Basin, Mexico
M.W. Bultman, F. Gray
2011, Environmental Earth Sciences (64) 2091-2106
The Upper San Pedro River Basin in Mexico and the United States is an important riparian corridor that is coming under increasing pressure from growing populations and the associated increase in groundwater withdrawal. Several studies have produced three-dimensional maps of the basin fill sediments in the US portion of the...
Volcanic plume height measured by seismic waves based on a mechanical model
Stephanie G. Prejean, Emily E. Brodsky
2011, Journal of Geophysical Research B: Solid Earth (116) B01306
In August 2008 an unmonitored, largely unstudied Aleutian volcano, Kasatochi, erupted catastrophically. Here we use seismic data to infer the height of large eruptive columns such as those of Kasatochi based on a combination of existing fluid and solid mechanical models. In so doing, we propose a connection between a...
Contain or eradicate? Optimizing the management goal for Australian acacia invasions in the face of uncertainty
J.L. Moore, M.C. Runge, B.L. Webber, J.R.U. Wilson
2011, Diversity and Distributions (17) 1047-1059
Aim To identify whether eradication or containment is expected to be the most cost‐effective management goal for an isolated invasive population when knowledge about the current extent is uncertain.Location Global and South Africa.Methods We developed a decision analysis framework to analyse the best management goal for an invasive species population (eradication, containment or...
Source and Delivery of Nutrients to Receiving Waters in the Northeastern and Mid-Atlantic Regions of the United States
R. B. Moore, C. M. Johnston, R. A. Smith, B. Milstead
2011, Journal of the American Water Resources Association (47) 965-990
This study investigates nutrient sources and transport to receiving waters, in order to provide spatially detailed information to aid water‐resources managers concerned with eutrophication and nutrient management strategies. SPAtially Referenced Regressions On Watershed attributes (SPARROW) nutrient models were developed for the Northeastern and Mid‐Atlantic (NE US) regions of the United...
Factors Controlling Pre-Columbian and Early Historic Maize Productivity in the American Southwest, Part 1: The Southern Colorado Plateau and Rio Grande Regions
L. V. Benson
2011, Journal of Archaeological Method and Theory (18) 1-60
Maize is the New World's preeminent grain crop and it provided the economic basis for human culture in many regions within the Americas. To flourish, maize needs water, sunlight (heat), and nutrients (e. g., nitrogen). In this paper, climate and soil chemistry data are used to evaluate the potential for...
Changes in monoterpene mixing ratios during summer storms in rural New Hampshire (USA)
Karl B. Haase, C. Jordan, E. Mentis, L. Cottrell, H.R. Mayne, R. Talbot, B.C. Sive
2011, Atmospheric Chemistry and Physics (11) 11465-11476
Monoterpenes are an important class of biogenic hydrocarbons that influence ambient air quality and are a principle source of secondary organic aerosol (SOA). Emitted from vegetation, monoterpenes are a product of photosynthesis and act as a response to a variety of environmental factors. Most parameterizations of monoterpene emissions are based...
Age, genesis, and paleoclimatic interpretation of the Sangamon/Loveland complex in the Lower Mississippi Valley, USA
H. W. Markewich, D.A. Wysocki, M.J. Pavich, E.M. Rutledge
2011, Geological Society of America Bulletin (123) 21-39
For more than a century, the Sangamon paleosol (the Sangamon) has been an integral part of geologic and pedologic investigations in the central United States, including the Upper Mississippi and Lower Missouri River Valleys. Compositional, pedologic, micromorphologic, stratigraphic, and age data indicate that the prominent reddish paleosol developed in silt-rich...
Trophic magnification of PCBs and its relationship to the octanol-water partition coefficient
D.M. Walters, M.A. Mills, B.S. Cade, L.P. Burkard
2011, Environmental Science & Technology (45) 3917-3924
We investigated polychlorinated biphenyl (PCB) bioaccumulation relative to octanol-water partition coefficient (KOW) and organism trophic position (TP) at the Lake Hartwell Superfund site (South Carolina). We measured PCBs (127 congeners) and stable isotopes (??15N) in sediment, organic matter, phytoplankton, zooplankton, macroinvertebrates, and fish. TP, as calculated from ??15N, was significantly,...
Balancing forest-regeneration probabilities and maintenance costs in dry grasslands of high conservation priority
Janine Bolliger, Thomas C. Edwards Jr., Stefan Eggenberg, Sascha Ismail, Irmi Seidl, Felix Kienast
2011, Conservation Biology (25) 567-576
Abandonment of agricultural land has resulted in forest regeneration in species-rich dry grasslands across European mountain regions and threatens conservation efforts in this vegetation type. To support national conservation strategies, we used a site-selection algorithm (MARXAN) to find optimum sets of floristic regions (reporting units) that contain grasslands of high...
Patterns of coral disease across the Hawaiian Archipelago: Relating disease to environment
G.S. Aeby, G.J. Williams, E.C. Franklin, J. Kenyon, E.F. Cox, S. Coles, Thierry M. Work
2011, PLoS ONE (6)
In Hawaii, coral reefs occur across a gradient of biological (host abundance), climatic (sea surface temperature anomalies) and anthropogenic conditions from the human-impacted reefs of the main Hawaiian Islands (MHI) to the pristine reefs of the northwestern Hawaiian Islands (NWHI). Coral disease surveys were conducted at 142 sites from across...
A multitracer approach for characterizing interactions between shallow groundwater and the hydrothermal system in the Norris Geyser Basin area, Yellowstone National Park
W.P. Gardner, David D. Susong, D. K. Solomon, H.P. Heasler
2011, Geochemistry, Geophysics, Geosystems (12)
Multiple environmental tracers are used to investigate age distribution, evolution, and mixing in local‐ to regional‐scale groundwater circulation around the Norris Geyser Basin area in Yellowstone National Park. Springs ranging in temperature from 3°C to 90°C in the Norris Geyser Basin area were sampled for stable isotopes of hydrogen and...
Mg-spinel lithology: A new rock type on the lunar farside
C.M. Pieters, S. Besse, J. Boardman, B. Buratti, L. Cheek, R. N. Clark, J. #NAME? Combe, D. Dhingra, J.N. Goswami, R.O. Green, J.W. Head, P. Isaacson, R. Klima, G. Kramer, S. Lundeen, E. Malaret, T. McCord, J. Mustard, J. Nettles, N. Petro, C. Runyon, M. Staid, J. Sunshine, L.A. Taylor, K. Thaisen, S. Tompkins, J. Whitten
2011, Journal of Geophysical Research E: Planets (116)
High-resolution compositional data from Moon Mineralogy Mapper (M 3) for the Moscoviense region on the lunar farside reveal three unusual, but distinctive, rock types along the inner basin ring. These are designated "OOS" since they are dominated by high concentrations of orthopyroxene, olivine, and Mg-rich spinel, respectively. The OOS occur...
Numerical modeling of the impact of sea-level rise on fringing coral reef hydrodynamics and sediment transport
C. D. Storlazzi, E. Elias, M.E. Field, M.K. Presto
2011, Coral Reefs (30) 83-96
Most climate projections suggest that sea level may rise on the order of 0.5-1.0 m by 2100; it is not clear, however, how fluid flow and sediment dynamics on exposed fringing reefs might change in response to this rapid sea-level rise. Coupled hydrodynamic and sediment-transport numerical modeling is consistent with...
Molecular detection of vertebrates in stream water: A demonstration using rocky mountain tailed frogs and Idaho giant salamanders
C.S. Goldberg, D. S. Pilliod, R.S. Arkle, L.P. Waits
2011, PLoS ONE (6)
Stream ecosystems harbor many secretive and imperiled species, and studies of vertebrates in these systems face the challenges of relatively low detection rates and high costs. Environmental DNA (eDNA) has recently been confirmed as a sensitive and efficient tool for documenting aquatic vertebrates in wetlands and in a large river...
Sources and physical processes responsible for OH/H2O in the lunar soil as revealed by the Moon Mineralogy Mapper (M3)
T. B. McCord, L.A. Taylor, J. #NAME? Combe, G. Kramer, C.M. Pieters, J.M. Sunshine, R. N. Clark
2011, Journal of Geophysical Research E: Planets (116)
Analysis of two absorption features near 3 m in the lunar reflectance spectrum, observed by the orbiting M3 spectrometer and interpreted as being due to OH and H2O, is presented, and the results are used to discuss the processes producing these molecules. This analysis focuses on the dependence of the...
