Tsunami warnings: Understanding in Hawai'i
Chris E. Gregg, Bruce F. Houghton, Douglas Paton, David M. Johnston, David A. Swanson, B.S. Yanagi
2007, Natural Hazards (40) 71-87
The devastating southeast Asian tsunami of December 26, 2004 has brought home the destructive consequences of coastal hazards in an absence of effective warning systems. Since the 1946 tsunami that destroyed much of Hilo, Hawai‘i, a network of pole mounted sirens has been used to provide an early public...
Carbon export and cycling by the Yukon, Tanana, and Porcupine rivers, Alaska, 2001-2005
Robert G. Striegl, Mark M. Dornblaser, George R. Aiken, Kimberly P. Wickland, Peter A. Raymond
2007, Water Resources Research (43)
Loads and yields of dissolved and particulate organic and inorganic carbon (DOC, POC, DIC, PIC) were measured and modeled at three locations on the Yukon River (YR) and on the Tanana and Porcupine rivers (TR, PR) in Alaska during 2001–2005. Total YR carbon export averaged 7.8 Tg C yr−1, 30%...
Bacteria form tellurium nanocrystals
R.S. Oremland
2007, Industrial Bioprocessing (29) 5-5
A team of researchers have found two bacterial species that produce tellurium oxyanions as respiratory electron acceptors for growth, leaving elemental tellurium in the form of nanoparticles. The crystals from the two organisms exhibit distinctively different structures. Bacillus selenitireducens initially forms nanorods that cluster together to form rosettes. Sulfurospirillum barnesii...
Migration and the use of Autumn, Winter, and Spring roosts by tree bats
Paul M. Cryan, J. P. Veilleux
2007, Book chapter, Bats in forests: Conservation and management
No abstract available....
Spatial data infrastructures in management of natural disasters
K.O. Asante, J. P. Verdin, M.P. Crane, S.A. Tokar, James D. Rowland
H. Onsrud, editor(s)
2007, Book chapter, Research and theory in advancing spatial data infrastructure concepts
No abstract available....
Distribution and habitat associations of radio-tagged adult Lost River sucker and shortnose sucker in Upper Klamath Lake, Oregon, 2005-2006
N.P. Banish, B.J. Adams, R.S. Shively
2007, Report
No abstract available ...
The National Elevation Dataset
D.B. Gesch
D. Maune, editor(s)
2007, Book chapter, Digital elevation model technologies and applications—the DEM users manual
No abstract available....
Sedimentary rock-hosted Au deposits of the Dian-Qian-Gui area, Guizhou, and Yunnan Provinces, and Guangxi District, China
S. G. Peters, H. Jiazhan, L. Zhiping, J. Chenggui
2007, Ore Geology Reviews (31) 170-204
Sedimentary rock-hosted Au deposits in the Dian-Qian-Gui area in southwest China are hosted in Paleozoic and early Mesozoic sedimentary rocks along the southwest margin of the Yangtze (South China) Precambrian craton. Most deposits have characteristics similar to Carlin-type Au deposits and are spatially associated, on a regional scale, with deposits...
Mycobacterial infections in striped bass from Delaware Bay
C. A. Ottinger, J.J. Brown, Christine L. Densmore, C. E. Starliper, V. S. Blazer, H.S. Weyers, K.A. Beauchamp, M. W. Rhodes, H. Kator, David T. Gauthier, W. K. Vogelbein
2007, Journal of Aquatic Animal Health (19) 99-108
Eighty striped bass Morone saxatilis were obtained from Delaware Bay using commercial gill nets set adjacent to Woodland Beach (n = 70) and Bowers Beach (n = 10) in December 2003. Fish were examined for gross lesions. Total lengths (TLs) and eviscerated weights were determined to calculate condition factors (K)....
Hierarchical spatiotemporal matrix models for characterizing invasions
M.B. Hooten, C. K. Wikle, R.M. Dorazio, J. Andrew Royle
2007, Biometrics (63)
The growth and dispersal of biotic organisms is an important subject in ecology. Ecologists are able to accurately describe survival and fecundity in plant and animal populations and have developed quantitative approaches to study the dynamics of dispersal and population size. Of particular interest are the dynamics of invasive species....
Comparison of four approaches to a rock facies classification problem
M.K. Dubois, Geoffrey C. Bohling, S. Chakrabarti
2007, Computers & Geosciences (33) 599-617
In this study, seven classifiers based on four different approaches were tested in a rock facies classification problem: classical parametric methods using Bayes' rule, and non-parametric methods using fuzzy logic, k-nearest neighbor, and feed forward-back propagating artificial neural network. Determining the most effective classifier for geologic facies prediction in wells...
Biological uptake of polychlorinated biphenyls by Macoma balthica from sediment amended with activated carbon
Pamela B. McLeod, Martine J. van den Heuvel-Greve, S. N. Luoma, R.G. Luthy
2007, Environmental Toxicology and Chemistry (26) 980-987
This work characterizes the efficacy of activated carbon amendment in reducing polychlorinated biphenyl (PCB) bioavailability to clams (Macoma balthica) from field-contaminated sediment (Hunters Point Naval Shipyard, San Francisco Bay, CA, USA). Test methods were developed for the use of clams to investigate the effects of...
Return to the wild: Translocation as a tool in conservation of the desert tortoise (Gopherus agassizii)
K.J. Field, C.R. Tracy, P.A. Medica, R.W. Marlow, P.S. Corn
2007, Biological Conservation (136) 232-245
Translocation could be used as a tool in conservation of the threatened Mojave Desert Tortoise (Gopherus agassizii) by moving individuals from harm's way and into areas where they could contribute to conservation of the species. Numerous factors may affect the success of translocations, including the conditions experienced by tortoises in...
Recent climate trends and implications for water resources in the Catskill Mountain region, New York, USA
Douglas A. Burns, Julian Klaus, Michael R. McHale
2007, Journal of Hydrology (336) 155-170
Climate scientists have concluded that the earth’s surface air temperature warmed by 0.6 °C during the 20th century, and that warming induced by increasing concentrations of greenhouse gases is likely to continue in the 21st century, accompanied by changes in the hydrologic cycle. Climate change has important implications in the Catskill...
Isotopic characterization of three groundwater recharge sources and inferences for selected aquifers in the upper Klamath Basin of Oregon and California, USA
P.C. Palmer, M. W. Gannett, S.R. Hinkle
2007, Journal of Hydrology (336) 17-29
Stable isotope (??D and ??18O) signatures of three principal groundwater recharge areas in the 21,000-km2 upper Klamath Basin are used to infer recharge sources for aquifers in the interior parts of the basin. Two of the principal recharge areas, the Cascade Range on the western and southern margin of the...
Testing a Mahalanobis distance model of black bear habitat use in the Ouachita Mountains of Oklahoma
E. C. Hellgren, S.L. Bales, M.S. Gregory, David M. Leslie Jr., J. D. Clark
2007, Journal of Wildlife Management (71) 924-928
Regional wildlife–habitat models are commonly developed but rarely tested with truly independent data. We tested a published habitat model for black bears (Ursus americanus) with new data collected in a different site in the same ecological region (i.e., Ouachita Mountains of Arkansas and Oklahoma, USA). We used a Mahalanobis distance...
PVTx properties of the CO2-H2O and CO2-H2O-NaCl systems below 647 K: assessment of experimental data and thermodynamic models
Jiawen Hu, Zhenhao Duan, Chen Zhu, I.-M. Chou
2007, Chemical Geology (238) 249-267
Evaluation of CO2 sequestration in formation brine or in seawater needs highly accurate experimental data or models of pressure–volume–temperature-composition (PVTx) properties for the CO2–H2O and CO2–H2O–NaCl systems. This paper presents a comprehensive review of the experimental PVTx properties and the thermodynamic models of these two systems. The following conclusions are drawn from the...
Evidence for terrigenic SF6 in groundwater from basaltic aquifers, Jeju Island, Korea: Implications for groundwater dating
Dong-Chan Koh, Niel Plummer, Eurybiades Busenberg, Yongje Kim
2007, Journal of Hydrology (339) 93-104
Measurements of the concentrations of dichlorodifluoromethane (CFC-12), tritium (3H), and sulfur hexafluoride (SF6) in groundwater from basaltic aquifers in Jeju Island, Korea, demonstrate a terrigenic source of SF6. Using a lumped-parameter dispersion model, groundwater was identified as young water (<15 years), old water with negligible CFC-12 and 3H, and binary mixtures...
Correcting acoustic Doppler current profiler discharge measurement bias from moving-bed conditions without global positioning during the 2004 Glen Canyon Dam controlled flood on the Colorado River
J. W. Gartner, N. K. Ganju
2007, Limnology and Oceanography: Methods (5) 156-162
Discharge measurements were made by acoustic Doppler current profiler at two locations on the Colorado River during the 2004 controlled flood from Glen Canyon Dam, Arizona. Measurement hardware and software have constantly improved from the 1980s such that discharge measurements by acoustic profiling instruments are now routinely made over a...
A simulation of groundwater discharge and nitrate delivery to chesapeake bay from the lowermost delmarva peninsula, USA
W. E. Sanford, J.P. Pope
2007, Conference Paper, IAHS-AISH Publication
A groundwater model has been developed for the lowermost Delmarva Peninsula, USA, that simulates saltwater intrusion into local confined aquifers and nitrate delivery to the Chesapeake Bay from the surficial aquifer. A flow path and groundwater-age analysis was performed using the model to estimate the timing of nitrate delivery to...
A method for improving predictions of bed-load discharges to reservoirs
V.L. Lopes, W. R. Osterkamp, M. Bravo-Espinosa
2007, Lakes and Reservoirs: Research and Management (12) 59-72
Effective management options for mitigating the loss of reservoir water storage capacity to sedimentation depend on improved predictions of bed-load discharges into the reservoirs. Most predictions of bed-load discharges, however, are based on the assumption that the rates of bed-load sediment availability equal the transport capacity of the flow, ignoring...
Post-den emergence behavior of polar bears (Ursus maritimus) in Northern Alaska
T. S. Smith, Steven T. Partridge, Steven C. Amstrup, S. Schliebe
2007, Arctic (60) 187-194
We observed polar bear (Ursus maritimus) maternity den sites on Alaska’s North Slope in March 2002 and 2003 in an effort to describe bears’ post-den emergence behavior. During 40 sessions spanning 459 h, we observed 8 adults and 14 dependent cubs outside dens for 37.5 h (8.2% of total observation...
Latin hypercube approach to estimate uncertainty in ground water vulnerability
J.J. Gurdak, J.E. McCray, G. Thyne, S.L. Qi
2007, Ground Water (45) 348-361
A methodology is proposed to quantify prediction uncertainty associated with ground water vulnerability models that were developed through an approach that coupled multivariate logistic regression with a geographic information system (GIS). This method uses Latin hypercube sampling (LHS) to illustrate the propagation of input error and estimate uncertainty associated with...
Mercury speciation in piscivorous fish from mining-impacted reservoirs
James S. Kuwabara, Yuji Arai, Brent R. Topping, I.J. Pickering, G.N. George
2007, Environmental Science & Technology (41) 2745-2749
Guadalupe Reservoir (GUA), California, and Lahontan Reservoir (LAH), Nevada, U.S. are both affected either directly or indirectly by the legacy of gold and silver mining in the Sierra Nevada during the nineteenth century. Analysis of total mercury in fish from these lentic systems consistently indicate elevated concentrations (>1 μg·g-1 wet...
Calibrating a forest landscape model to simulate frequent fire in Mediterranean-type shrublands
A.D. Syphard, J. Yang, J. Franklin, H.S. He, Jon E. Keeley
2007, Environmental Modelling and Software (22) 1641-1653
In Mediterranean-type ecosystems (MTEs), fire disturbance influences the distribution of most plant communities, and altered fire regimes may be more important than climate factors in shaping future MTE vegetation dynamics. Models that simulate the high-frequency fire and post-fire response strategies characteristic of these regions will be important tools for evaluating...
