The perception of volcanic risk in Kona communities from Mauna Loa and Hualālai volcanoes, Hawai'i
Chris E. Gregg, Bruce F. Houghton, David M. Johnston, Douglas Paton, D. A. Swanson
2004, Journal of Volcanology and Geothermal Research (130) 179-196
Volcanic hazards in Kona (i.e. the western side of the island of Hawai'i) stem primarily from Mauna Loa and Hualālai volcanoes. The former has erupted 39 times since 1832. Lava flows were emplaced in Kona during seven of these eruptions and last impacted Kona in 1950. Hualālai last erupted in...
The Ozobranchus leech is a candidate mechanical vector for the fibropapilloma-associated turtle herpesvirus found latently infecting skin tumors on Hawaiian green turtles (Chelonia mydas)
R.J. Greenblatt, Thierry M. Work, G. Balazs, C.A. Sutton, R.N. Casey, J.W. Casey
2004, Virology (321) 101-110
Fibropapillomatosis (FP) of marine turtles is a neoplastic disease of ecological concern. A fibropapilloma-associated turtle herpesvirus (FPTHV) is consistently present, usually at loads exceeding one virus copy per tumor cell. DNA from an array of parasites of green turtles (Chelonia mydas) was examined with quantitative PCR (qPCR) to determine whether...
Dome growth behavior at Soufriere Hills Volcano, Montserrat, revealed by relocation of volcanic event swarms, 1995-1996
C.A. Rowe, C.H. Thurber, R.A. White
2004, Journal of Volcanology and Geothermal Research (134) 199-221
We have relocated a subset of events from the digital waveform catalogue of ???17,000 volcanic microearthquakes recorded between July 1995 and February 1996 at Soufriere Hills Volcano (SHV), Montserrat, using a cross-correlation-based phase repicking technique with a joint location method. Hypocenters were estimated for 3914 earthquakes having five or more...
Shallow-source aeromagnetic anomalies observed over the West Antarctic Ice Sheet compared with coincident bed topography from radar ice sounding - New evidence for glacial "removal" of subglacially erupted late Cenozoic rift-related volcanic edifices
John C. Behrendt, D. D. Blankenship, D. L. Morse, R.E. Bell
2004, Conference Paper, Global and Planetary Change
Aeromagnetic and radar ice sounding results from the 1991-1997 Central West Antarctica (CWA) aerogeophysical survey over part of the West Antarctic Ice Sheet (WAIS) and subglacial area of the volcanically active West Antarctic rift system have enabled detailed examination of specific anomaly sources. These anomalies, previously interpreted as caused by...
Energy density and variability in abundance of pigeon guillemot prey: Support for the quality-variability trade-off hypothesis
Michael A. Litzow, John F. Piatt, Alisa A. Abookire, Martin D. Robards
2004, Journal of Animal Ecology (73) 1149-1156
1. The quality-variability trade-off hypothesis predicts that (i) energy density (kJ g-1) and spatial-temporal variability in abundance are positively correlated in nearshore marine fishes; and (ii) prey selection by a nearshore piscivore, the pigeon guillemot (Cepphus columba Pallas), is negatively affected by variability in abundance. 2. We tested these predictions...
Annual survival estimation of migratory songbirds confounded by incomplete breeding site-fidelity: Study designs that may help
M.R. Marshall, Duane R. Diefenbach, L.A. Wood, R.J. Cooper
2004, Animal Biodiversity and Conservation (27) 59-72
Many species of bird exhibit varying degrees of site-fidelity to the previous year's territory or breeding area, a phenomenon we refer to as incomplete breeding site-fidelity. If the territory they occupy is located beyond the bounds of the study area or search area (i.e., they have emigrated from the study...
Three-dimensional distribution of gas hydrate beneath southern Hydrate Ridge: Constraints from ODP Leg 204
A.M. Trehu, P.E. Long, M.E. Torres, G. Bohrmann, F.R. Rack, T. S. Collett, D.S. Goldberg, A.V. Milkov, M. Riedel, P. Schultheiss, N.L. Bangs, S. R. Barr, W.S. Borowski, George E. Claypool, M.E. Delwiche, G.R. Dickens, E. Gracia, G. Guerin, M. Holland, J.E. Johnson, Y.-J. Lee, C.-S. Liu, X. Su, B. Teichert, H. Tomaru, M. Vanneste, M. E. Watanabe, J.L. Weinberger
2004, Earth and Planetary Science Letters (222) 845-862
Large uncertainties about the energy resource potential and role in global climate change of gas hydrates result from uncertainty about how much hydrate is contained in marine sediments. During Leg 204 of the Ocean Drilling Program (ODP) to the accretionary complex of the Cascadia subduction zone, we sampled the gas...
Effects of housing density and cage floor space on C57BL/6J mice
A. L. Smith, S.L. Mabus, J.D. Stockwell, C. Muir
2004, Comparative Medicine (54) 656-663
The Guide for the Care and Use of Laboratory Animals (the Guide) is widely accepted as the housing standard by most Institutional Animal Care and Use Committees. The recommendations are based on best professional judgment rather than experimental data. Current efforts are directed toward replacing these guidelines with data-driven, species-appropriate...
Source parameters and rupture velocities of microearthquakes in western Nagano, Japan, determined using stopping phases
K. Imanishi, M. Takeo, W.L. Ellsworth, H. Ito, T. Matsuzawa, Y. Kuwahara, Y. Iio, S. Horiuchi, S. Ohmi
2004, Bulletin of the Seismological Society of America (94) 1762-1780
We use an inversion method based on stopping phases (Imanishi and Takeo, 2002) to estimate the source dimension, ellipticity, and rupture velocity of microearthquakes and investigate the scaling relationships between source parameters. We studied 25 earthquakes, ranging in size from M 1.3 to M 2.7, that occurred between May and...
Efficacy of single calfhood vaccination of elk with Brucella abortus strain 19
T.J. Roffe, L.C. Jones, K. Coffin, M.L. Drew, Steven J. Sweeney, S.D. Hagius, P.H. Elzer, D. Davis
2004, Journal of Wildlife Management (68) 830-836
Brucellosis has been eradicated from cattle in the states of Wyoming, Montana, and Idaho, USA. However, free-ranging elk (Cervus elaphus) that use feedgrounds in the Greater Yellowstone Area (GYA) and bison (Bison bison) in Yellowstone and Grand Teton national parks still have high seroprevalence to the disease and have caused...
Effects of marine reserves and urchin disease on southern Californian rocky reef communities
Michael D. Behrens, Kevin D. Lafferty
2004, Marine Ecology Progress Series (279) 129-139
While the species level effects of marine reserves are widely recognized, community level shifts due to marine reserves have only recently been documented. Protection from fishing of top predators may lead to trophic cascades, which have community-wide implications. Disease may act in a similar manner, regulating population levels of dominant...
DEM generation and tidal deformation detection for Sulzberger Ice Shelf, West Antarctica using SAR interferometry
S. Baek, Oh-Ig Kwoun, M. Bassler, Z. Lu, C. K. Shum, R. Dietrich
2004, Conference Paper, Proceedings of the 60th annual meeting of the Institute of Navigation
In this study we generated a relative Digital Elevation Model (DEM) over the Sulzberger Ice Shelf, West Antarctica using ERS1/2 synthetic aperture radar (SAR) interferometry data. Four repeat pass differential interferograms are used to find the grounding zone and to classify the study area. An interferometrically derived DEM is compared...
Estimating tectonic history through basin simulation-enhanced seismic inversion: Geoinformatics for sedimentary basins
K. Tandon, K. Tuncay, K. Hubbard, J. Comer, P. Ortoleva
2004, Geophysical Journal International (156) 129-139
A data assimilation approach is demonstrated whereby seismic inversion is both automated and enhanced using a comprehensive numerical sedimentary basin simulator to study the physics and chemistry of sedimentary basin processes in response to geothermal gradient in much greater detail than previously attempted. The approach not only reduces costs by...
Winter survival of lesser scaup in east-central Florida
G. Herring, J.A. Collazo
2004, Journal of Wildlife Management (68) 1082-1087
The North American continental population of lesser scaup (Aythya affinis) has been declining since the mid-1980s. Seasonal survival estimates may provide insights about the ecological basis for this decline, but such data are not available. We estimated post-harvest winter survival of lesser scaup in east-central Florida, USA, where 62% of...
The Modular Modeling System (MMS): A modeling framework for water- and environmental-resources management
G.H. Leavesley, S.L. Markstrom, Roland J. Viger
2004, Conference Paper, Bridging the Gap: Meeting the World's Water and Environmental Resources Challenges - Proceedings of the World Water and Environmental Resources Congress 2001
The interdisciplinary nature and increasing complexity of water- and environmental-resource problems require the use of modeling approaches that can incorporate knowledge from a broad range of scientific disciplines. The large number of distributed hydrological and ecosystem models currently available are composed of a variety of different conceptualizations of the associated...
Encounter history modeling of joint mark-recapture, tag-resighting and tag-recovery data under temporary emigration
R. J. Barker, K.P. Burnham, Gary C. White
2004, Statistica Sinica (14) 1037-1055
We describe a joint analysis of mark-recapture, tag-resight and tag-recovery data that directly models the encounter history of an animal. The probability of the encounter history for each animal is partitioned into survival, recapture, resighting, and recovery components, and a component for the probability that the animal is never encountered...
Wrightwood and the earthquake cycle: What a long recurrence record tells us about how faults work
R. Weldon, K. Scharer, T. Fumal, G. Biasi
2004, GSA Today (14) 4-10
The concept of the earthquake cycle is so well established that one often hears statements in the popular media like, "the Big One is overdue" and "the longer it waits, the bigger it will be." Surprisingly, data to critically test the variability in recurrence intervals, rupture displacements, and relationships between...
Hazard assessment of a simulated oil spill on intertidal areas of the St. Lawrence River with SPMD-TOX
B. Thomas Johnson, J. D. Petty, J.N. Huckins, Kenneth Lee, J. Gauthier
2004, Environmental Toxicology (19) 329-335
Phytoremediation in a simulated crude oil spill was studied with a “minimalistic” approach. The SPMD-TOX paradigm—a miniature passive sorptive device to collect and concentrate chemicals and microscale tests to detect toxicity—was used to monitor over time the bioavailability and potential toxicity of an oil spill. A simulated crude oil spill...
Prediction of nonlinear soil effects
S. Hartzell, L.F. Bonilla, R. A. Williams
2004, Bulletin of the Seismological Society of America (94) 1609-1629
Mathematical models of soil nonlinearity in common use and recently developed nonlinear codes compared to investigate the range of their predictions. We consider equivalent linear formulations with and without frequency-dependent moduli and damping ratios and nonlinear formulations for total and effective stress. Average velocity profiles to 150 m depth with...
Frequency spectral analysis of GPR data over a crude oil spill
B.L. Burton, G.R. Olhoeft, M.H. Powers
Slob E.Yarovoy A.Rhebergen J.B., editor(s)
2004, Conference Paper, Proceedings of the Tenth International Conference Ground Penetrating Radar, GPR 2004
A multi-offset ground penetrating radar (GPR) dataset was acquired by the U.S. Geological Survey (USGS) at a crude oil spill site near Bemidji, Minnesota, USA. The dataset consists of two, parallel profiles, each with 17 transmitter-receiver offsets ranging from 0.60 to 5.15m. One profile was acquired over a known oil...
Estimating site occupancy and species detection probability parameters for terrestrial salamanders
L.L. Bailey, T.R. Simons, K. H. Pollock
2004, Ecological Applications (14) 692-702
Recent, worldwide amphibian declines have highlighted a need for more extensive and rigorous monitoring programs to document species occurrence and detect population change. Abundance estimation methods, such as mark-recapture, are often expensive and impractical for large-scale or long-term amphibian monitoring. We apply a new method to estimate proportion of area...
Annual layers revealed by GPR in the subsurface of a prograding coastal barrier, southwest Washington, U.S.A
L. J. Moore, H.M. Jol, S. Kruse, S. Vanderburgh, G. M. Kaminsky
2004, Journal of Sedimentary Research (74) 690-696
The southwest Washington coastline has experienced extremely high rates of progradation during the late Holocene. Subsurface stratigraphy, preserved because of progradation and interpreted using ground-penetrating radar (GPR), has previously been used successfully to document coastal response to prehistoric storm and earthquake events. New GPR data collected at Ocean Shores, Washington,...
Distribution of sea anemones (Cnidaria, Actiniaria) in Korea analyzed by environmental clustering
H.-R. Cha, R. W. Buddemeier, D.G. Fautin, P. Sandhei
2004, Conference Paper, Hydrobiologia
Using environmental data and the geospatial clustering tools LOICZView and DISCO, we empirically tested the postulated existence and boundaries of four biogeographic regions in the southern part of the Korean peninsula. Environmental variables used included wind speed, sea surface temperature (SST), salinity, tidal amplitude, and the chlorophyll spectral signal. Our...
Some statistical relationships between stream sediment and soil geochemistry in northwestern Wisconsin - can stream sediment compositions be used to predict compositions of soils in glaciated terranes?
W.F. Cannon, L. G. Woodruff, S. Pimley
2004, Journal of Geochemical Exploration (81) 29-46
Mean stream sediment chemical compositions from northwestern Wisconsin in the north central United States, based on more than 800 samples, differ significantly from mean A-horizon and C-horizon soil compositions, based on about 380 samples of each horizon. Differences by a factor greater than 1.5 exist for some elements (Ca, Mn,...
Geochemistry, radiocarbon ages, and paleorecharge conditions along a transect in the central High Plains aquifer, southwestern Kansas, USA
P.B. McMahon, J.K. Böhlke, S. C. Christenson
2004, Applied Geochemistry (19) 1655-1686
Water samples from short-screen monitoring wells installed along a 90-km transect in southwestern Kansas were analyzed for major ions, trace elements, isotopes (H, B, C, N, O, S, Sr), and dissolved gases (He, Ne, N2, Ar, O2, CH4) to evaluate the geochemistry, radiocarbon ages, and paleorecharge conditions in the unconfined...
