Fate and identification of oil-brine contamination in different hydrogeologic settings
Donald O. Whittemore
2007, Applied Geochemistry (22) 2099-2114
Past disposal of oil-field brine at the surface has caused substantial contamination of water resources in Kansas. Natural saline water occurs in and discharges from Permian bedrock in parts of the state, and other anthropogenic sources of saline water exist, requiring clear identification of different sources. Time-series analysis of Cl-...
Regional beach/cliff system dynamics along the california coast
C.J. Hapke, Don Reid
2007, Conference Paper, Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes
The coast of California is comprised of both sandy shorelines and cliffed coastline, and in many areas these features spatially coincide. In order to better understand the regional trends of change along the California coast, the U.S. Geological Survey is quantifying both sandy shoreline change and coastal cliff retreat for...
Suspended sediment and sediment-associated contaminants in San Francisco Bay
D. H. Schoellhamer, T.E. Mumley, J.E. Leatherbarrow
2007, Environmental Research (105) 119-131
Water-quality managers desire information on the temporal and spatial variability of contaminant concentrations and the magnitudes of watershed and bed-sediment loads in San Francisco Bay. To help provide this information, the Regional Monitoring Program for Trace Substances in the San Francisco Estuary (RMP) takes advantage of the association of many contaminants with sediment particles...
Monitoring and modeling ice-rock avalanches from ice-capped volcanoes: A case study of frequent large avalanches on Iliamna Volcano, Alaska
C. Huggel, J. Caplan-Auerbach, C. F. Waythomas, R.L. Wessels
2007, Journal of Volcanology and Geothermal Research (168) 114-136
Iliamna is an andesitic stratovolcano of the Aleutian arc with regular gas and steam emissions and mantled by several large glaciers. Iliamna Volcano exhibits an unusual combination of frequent and large ice-rock avalanches in the order of 1 ?? 106??m3 to 3 ?? 107??m3 with recent return periods of 2-4??years....
Using population genetic tools to develop a control strategy for feral cats (Felis catus) in Hawai'i
H. Hansen, S.C. Hess, D. Cole, P.C. Banko
2007, Wildlife Research (34) 587-596
Population genetics can provide information about the demographics and dynamics of invasive species that is beneficial for developing effective control strategies. We studied the population genetics of feral cats on Hawai'i Island by microsatellite analysis to evaluate genetic diversity and population structure, assess gene flow and connectivity among three populations,...
Simulation of submarine groundwater discharge salinity and temperature variations: Implications for remote detection
A.M. Dausman, C.D. Langevin, M.C. Sukop
2007, Conference Paper, IAHS-AISH Publication
A hydrological analysis using a numerical simulation was done to identify the transient response of the salinity and temperature of submarine groundwater discharge (SGD) and utilize the results to guide data collection. Results indicate that the amount of SGD fluctuates depending on the ocean stage and geology, with the greatest...
Recent nesting of the American Crocodile (Crocodylus acutus) in Everglades National Park, Florida, USA
F.J. Mazzotti, M.S. Cherkiss, M.W. Parry, K.G. Rice
2007, Herpetological Review (38) 285-289
[No abstract available]...
Minimizing noise in fiberglass aquaculture tanks: Noise reduction potential of various retrofits
J. Davidson, A.S. Frankel, W.T. Ellison, S. Summerfelt, A.N. Popper, P. Mazik, J. Bebak
2007, Aquacultural Engineering (37) 125-131
Equipment used in intensive aquaculture systems, such as pumps and blowers can produce underwater sound levels and frequencies within the range of fish hearing. The impacts of underwater noise on fish are not well known, but limited research suggests that subjecting fish to noise could result in impairment of the...
Survival and breeding advantages of larger Black Brant (Branta bernicla nigricans) goslings: Within- and among-cohort variation
J.S. Sedinger, N.D. Chelgren
2007, The Auk (124) 1281-1293
We examined the relationship between mass late in the first summer and survival and return to the natal breeding colony for 12 cohorts (1986-1997) of female Black Brant (Branta bernicla nigricans). We used Cormack-Jolly-Seber methods and the program MARK to analyze capture-recapture data. Models included two kinds of residuals from...
ASAR images a diverse set of deformation patterns at Kilauea volcano, Hawai'i
Michael P. Poland
2007, Conference Paper
Since 2003, 27 independent look angles have been acquired by ENVISAT’s Advanced Synthetic Aperture Radar (ASAR) instrument over the island of Hawai`i, allowing for the formation of thousands of interferograms showing deformation of the ground surface. On Kīlauea volcano, a transition from minor to broad-scale summit inflation was observed by...
Hydrothermal nontronite formation at Eolo Seamount (Aeolian volcanic arc, Tyrrhenian Sea)
V.M. Dekov, George D. Kamenov, Jens Stummeyer, M. Thiry, C. Savelli, Wayne C. Shanks, D. Fortin, E. Kuzmann, A. Vertes
2007, Chemical Geology (245) 103-119
A sediment core containing a yellowish-green clay bed was recovered from an area of extensive hydrothermal deposition at the SE slope of the Eolo Seamount, Tyrrhenian Sea. The clay bed is composed of pure nontronite (described for the first time in the Tyrrhenian Sea), which appears to be the most...
Genotyping of Korean isolates of infectious hematopoietic necrosis virus (IHNV) based on the glycoprotein gene
W.-S. Kim, M.-J. Oh, T. Nishizawa, J. W. Park, Gael Kurath, M. Yoshimizu
2007, Archives of Virology (152) 2119-2124
Glycoprotein (G) gene nucleotide sequences of four Korean isolates of infectious hematopoietic necrosis virus (IHNV) were analyzed to evaluate their genetic relatedness to worldwide isolates. All Korean isolates were closely related to Japanese isolates of genogroup JRt rather than to those of North American and European genogroups. It is believed...
The age and provenance of 'Eschrichtius' cephalus cope (Mammalia: Cetacea)
Robert E. Weems, Lucy E. Edwards
2007, Journal of Vertebrate Paleontology (27) 752-756
No abstract available....
Deep-water chaunacid and lophiid anglerfishes (Pisces: Lophiiformes) off the south-eastern United States
John H. Caruso, Steve W. Ross, K. J. Sulak, G.R. Sedberry
2007, Journal of Fish Biology (70) 1015-1026
Recent research cruises to deep (80-910 m) reef habitats off the south-eastern U.S. and in the northern Gulf of Mexico have provided new information on the diagnostic characteristics, behaviours, colour patterns in life, bottom associations, distributions and maximum sizes of species of the anglerfish genera Chaunax, Lophiodes and Sladenia. Chaunax...
Construction and testing of a simple and economical soil greenhouse gas automatic sampler
D. Ginting, S.L. Arnold, N.S. Arnold, R.S. Tubbs
2007, Journal of Plant Nutrition (30) 1441-1454
Quantification of soil greenhouse gas emissions requires considerable sampling to account for spatial and/or temporal variation. With manual sampling, additional personnel are often not available to sample multiple sites within a narrow time interval. The objectives were to construct an automatic gas sampler and to compare the accuracy and precision...
Generalization of von Neumann analysis for a model of two discrete half-spaces: The acoustic case
M.M. Haney
2007, Geophysics (72)
Evaluating the performance of finite-difference algorithms typically uses a technique known as von Neumann analysis. For a given algorithm, application of the technique yields both a dispersion relation valid for the discrete time-space grid and a mathematical condition for stability. In practice, a major shortcoming of conventional von Neumann analysis...
Sources and temporal dynamics of arsenic in a New Jersey watershed, USA
J. L. Barringer, J.L. Bonin, M.J. DeLuca, T. Romagna, K. Cenno, M. Alebus, T. Kratzer, B. Hirst
2007, Science of the Total Environment (379) 56-74
We examined potential sources and the temporal dynamics of arsenic (As) in the slightly alkaline waters of the Wallkill River, northwestern New Jersey, where violations of water-quality standards have occurred. The study design included synoptic sampling of stream water and bed sediments in...
Hydrogeologic controls imposed by mechanical stratigraphy in layered rocks of the Chateauguay River Basin, a U.S.-Canada transborder aquifer
Roger H. Morin, Rejean Godin, Miroslav Nastev, Alain Rouleau
2007, Journal of Geophysical Research B: Solid Earth (112)
[1] The Châteauguay River Basin delineates a transborder watershed with roughly half of its surface area located in northern New York State and half in southern Québec Province, Canada. As part of a multidisciplinary study designed to characterize the hydrogeologic properties of this basin, geophysical logs were obtained in 12...
Coastal communities
J.M. Baldizar, N. B. Rybicki
2007, Ecological Restoration (25) 138-139
[No abstract available]...
Ecological observations on the colonial ascidian Didemnum sp. in a New England tide pool habitat
P. C. Valentine, M.R. Carman, D.S. Blackwood, E.J. Heffron
2007, Journal of Experimental Marine Biology and Ecology (342) 109-121
The colonial ascidian Didemnum sp. has colonized northwestern Atlantic coastal habitats from southern Long Island, New York, to Eastport, Maine. It is also present in offshore habitats of the Georges Bank fishing grounds. It threatens to alter fisheries habitats and shellfish aquacultures. Observations in a tide pool at Sandwich, MA from...
Early discrimination of Atlantic salmon smolt age: Time course of the relative effectiveness of body size and shape
J.H. Pearlstein, B.H. Letcher, M. Obedzinski
2007, Transactions of the American Fisheries Society (136) 1622-1632
The goal of this study was to test the relative effectiveness of morphological measurements and body size in predicting the smolt age of Atlantic salmon Salmo salar and to determine the time course of body size and shape differences between smolt ages. Analyses were conducted on age-0 to age-2 fish...
Flood regionalization: A hybrid geographic and predictor-variable region-of-influence regression method
K. Eng, P. C. D. Milly, Gary D. Tasker
2007, Journal of Hydrologic Engineering (12) 585-591
To facilitate estimation of streamflow characteristics at an ungauged site, hydrologists often define a region of influence containing gauged sites hydrologically similar to the estimation site. This region can be defined either in geographic space or in the space of the variables that are used to predict streamflow (predictor variables)....
The lakes and seas of Titan
Rosaly Lopes, Karl L. Mitchell, Stephen D. Wall, Giuseppe Mitri, Michael Janssen, Steven J. Ostro, Randolph L. Kirk, Alexander G. Hayes, Ellen R. Stofan, Jonathan I. Lunine, Ralph D. Lorenz, Charles Wood, Jani Radebaugh, Philipe Paillou, H. Zebker, Flora Paganelli
2007, Eos, Transactions, American Geophysical Union (88)
No abstract available....
Informing the network: Improving communication with interface communities during wildland fire
J. G. Taylor, S.C. Gillette, R.W. Hodgson, J.L. Downing, M.R. Burns, D.J. Chavez, J.T. Hogan
2007, Human Ecology Review (14) 198-211
An interagency research team studied fire communications that took place during different stages of two wildfires in southern California: one small fire of short duration and one large fire of long duration. This "quick- response" research showed that pre-fire communication planning was particularly effective for smaller fire events and parts...
Willow Flycatcher nonbreeding territory defense behavior in Costa Rica
M. K. Sogge, T. J. Koronkiewicz, Charles van Riper III, S.L. Durst
2007, The Condor (109) 475-480
We studied the intraspecific territorial defense behavior of wintering Willow Flycatchers (Empidonax traillii) in Costa Rica using a randomized playback experiment that exposed male and female birds to recordings of Willow Flycatcher songs and calls, Lesser Ground Cuckoo (Morococcyx erythropygius) vocalizations, and random noise. Flycatchers of both sexes responded most...
