Satellite telemetry and prey sampling reveal contaminant sources to pacific northwest ospreys
J. E. Elliott, C.A. Morrissey, Charles J. Henny, E.R. Inzunza, P. Shaw
2007, Ecological Applications (17) 1223-1233
Migratory behavior can be an important factor in determining contaminant exposure in avian populations. Accumulation of organochlorine (OC) pesticides while birds are wintering in tropical regions has been cited often as the reason for high concentrations in migrant populations. To explore this issue, we satellite tracked 16 Ospreys (Pandion haliaetus)...
Transport and degradation of chlorofluorocarbons (CFCs) in the pyritic Rabis Creek aquifer, Denmark
K. Hinsby, Anker L. Højberg, P. Engesgaard, K.H. Jensen, F. Larsen, Niel Plummer, Eurybiades Busenberg
2007, Water Resources Research (43)
Vertical profiles of the chlorofluorocarbons CFC‐11, CFC‐12, and CFC‐113 penetrating aerobic and anaerobic parts of a shallow sandy aquifer show that the CFC gases are degraded in the <1 m thick transition zone from aerobic to anaerobic groundwater in a pyritic sand aquifer at Rabis Creek, Denmark. Two‐dimensional solute transport...
Near-fault peak ground velocity from earthquake and laboratory data
Art McGarr, Joe B. Fletcher
2007, Bulletin of the Seismological Society of America (97) 1502-1510
We test the hypothesis that peak ground velocity (PGV) has an upper bound independent of earthquake magnitude and that this bound is controlled primarily by the strength of the seismogenic crust. The highest PGVs, ranging up to several meters per second, have been measured at sites within a few kilometers...
Geochemical and geophysical examination of submarine groundwater discharge and associated nutrient loading estimates into Lynch Cove, Hood Canal, WA
P.W. Swarzenski, F. W. Simonds, A.J. Paulson, S. Kruse, C. Reich
2007, Environmental Science & Technology (41) 7022-7029
Geochemical tracer data (i.e., 222Rn and four naturally occurring Ra isotopes), electromagnetic (EM) seepage meter results, and high-resolution, stationary electrical resistivity images were used to examine the bi-directional (i.e., submarine groundwater discharge and recharge) exchange of a coastal aquifer with seawater. Our study site for these experiments was Lynch Cove,...
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....
Quantitative remote sensing study indicates doubling of coastal erosion rate in past 50 yr along a segment of the Arctic coast of Alaska
J.C. Mars, D.W. Houseknecht
2007, Geology (35) 583-586
A new quantitative coastal land gained-and-lost method uses image analysis of topographic maps and Landsat thematic mapper short-wave infrared data to document accelerated coastal land loss and thermokarst lake expansion and drainage. The data span 1955-2005 along the Beaufort Sea coast north of Teshekpuk Lake in the National Petroleum Reserve...
Homogeneity of the geochemical reference material BRP-1 (paraná basin basalt) and assessment of minimum mass
Aloisio J. B. Cotta, Jacinta Enzweiler, Stephen A. Wilson, Carlos A. Perez, Antonio J. R. Nardy, Joao H. Larizzatti
2007, Geostandards and Geoanalytical Research (31) 379-393
Reference materials (RM) are required for quantitative analyses and their successful use is associated with the degree of homogeneity, and the traceability and confidence limits of the values established by characterisation. During the production of a RM, the chemical characterisation can only commence after it has been demonstrated that the...
Home ranges and habitat use of sloth bears Melursus ursinus inornatus in Wasgomuwa National Park, Sri Lanka
S. Ratnayeke, F.T. Van Manen, U.K.G.K. Padmalal
2007, Wildlife Biology (13) 272-284
We studied home ranges and habitat selection of 10 adult sloth bears Melursus ursinus inornatus at Wasgomuwa National Park, Sri Lanka during 2002-2003. Very little is known about the ecology and behaviour of M. u. inornatus, which is a subspecies found in Sri Lanka. Our study was undertaken to assess...
Faunal re-evaluation of Mid-Pliocene conditions in the western equatorial Pacific
H. Dowsett
2007, Micropaleontology (53) 447-456
Mid-Pliocene low-latitude Pacific faunal (planktic foraminifer) sea surface temperature (SST) estimates are normally based upon the Modern Analog Technique (MAT). In the Eastern equatorial Pacific (EEP), where upwelling of cool water predominates, MAT can be used to discern both cooling and warming in Neogene records. SST today is ???30??C in...
Progress in the development of shallow-water mapping systems
E. Bergeron, C.R. Worley, T. O'Brien
2007, Sea Technology (48) 10-15
The USGS (US Geological Survey) Coastal and Marine Geology has deployed an advance autonomous shallow-draft robotic vehicle, Iris, for shallow-water mapping in Apalachicola Bay, Florida. The vehicle incorporates a side scan sonar system, seismic-reflection profiler, single-beam echosounder, and global positioning system (GPS) navigation. It is equipped with an onboard microprocessor-based...
The impact of time and field conditions on brown bear (Ursus arctos) faecal DNA amplification
M.A. Murphy, K.C. Kendall, A. Robinson, L.P. Waits
2007, Conservation Genetics (8) 1219-1224
To establish longevity of faecal DNA samples under varying summer field conditions, we collected 53 faeces from captive brown bears (Ursus arctos) on a restricted vegetation diet. Each faeces was divided, and one half was placed on a warm, dry field site while the other half was placed on a...
Prime candidate earth targets for the post-launch radiometric calibration of space-based optical imaging instruments
P.M. Teillet, J. A. Barsi, G. Chander, K. J. Thome
2007, Conference Paper, Proceedings of SPIE - The International Society for Optical Engineering
This paper provides a comprehensive list of prime candidate terrestrial targets for consideration as benchmark sites for the post-launch radiometric calibration of space-based instruments. The key characteristics of suitable sites are outlined primarily with respect to selection criteria, spatial uniformity, and temporal stability. The establishment and utilization of such benchmark...
USGS assessment of undiscovered oil and gas resources for the Oligocene Frio and Anahuac formations, U.S. Gulf of Mexico coastal plain and state waters: Review of assessment units
Sharon M. Swanson, Alexander W. Karlsen, Peter D. Warwick
Lorcan Kennan, James Pindell, Norman C. Rosen, editor(s)
2007, Conference Paper, The Paleogene of the Gulf of Mexico and Caribbean basins: Processes, events, and petroleum systems
The Oligocene Frio and Anahuac formations were examined by the U.S. Geological Survey (USGS) as part of an assessment of technically recoverable undiscovered conventional and unconventional hydrocarbon resources in Paleogene and Neogene strata underlying the U.S. Gulf of Mexico Coastal Plain and state waters. Work included the identification of structural,...
Circum-Arctic petroleum systems identified using decision-tree chemometrics
K. E. Peters, L.S. Ramos, J.E. Zumberge, Z. C. Valin, C.R. Scotese, D. L. Gautier
2007, American Association of Petroleum Geologists Bulletin (91) 877-913
Source- and age-related biomarker and isotopic data were measured for more than 1000 crude oil samples from wells and seeps collected above approximately 55??N latitude. A unique, multitiered chemometric (multivariate statistical) decision tree was created that allowed automated classification of 31 genetically distinct circumArctic oil families based on a training...
Habitat characteristics of adult frosted elfins (Callophrys irus) in sandplain communities of southeastern Massachusetts, USA
G. Albanese, P.D. Vickery, P.R. Sievert
2007, Biological Conservation (136) 53-64
Changes to land use and disturbance frequency threaten disturbance-dependent Lepidoptera within sandplain habitats of the northeastern United States. The frosted elfin (Callophrys irus) is a rare and declining monophagous butterfly that is found in xeric open habitats maintained by disturbance. We surveyed potential habitat for adult frosted elfins at four...
Analysis of Alaskan burn severity patterns using remotely sensed data
P.A. Duffy, J. Epting, J.M. Graham, T.S. Rupp, A. D. McGuire
2007, International Journal of Wildland Fire (16) 277-284
Wildland fire is the dominant large-scale disturbance mechanism in the Alaskan boreal forest, and it strongly influences forest structure and function. In this research, patterns of burn severity in the Alaskan boreal forest are characterised using 24 fires. First, the relationship between burn severity and area burned is quantified using...
Blooms of the toxic dinoflagellate Alexandrium fundyense in the western Gulf of Maine in 1993 and 1994: A comparative modeling study
C.A. Stock, D.J. McGillicuddy Jr., D.M. Anderson, A.R. Solow, R. P. Signell
2007, Continental Shelf Research (27) 2486-2512
Blooms of the toxic dinoflagellate Alexandrium fundyense commonly occur in the western Gulf of Maine but the amount of toxin observed in coastal shellfish is highly variable. In this study, a coupled physical-biological model is used to investigate the dynamics underlying the observed A. fundyense abundance and shellfish toxicity in...
Paleomagnetic and mineral magnetic constraints on Zn-Pb ore genesis in the Pend Oreille Mine, Metaline district, Washington, USA
S.J. Pannalal, David T. A. Symons, D. L. Leach
2007, Canadian Journal of Earth Sciences (44) 1661-1673
Zinc-lead mineralization in the Metaline mining district of northeastern Washington, USA, is hosted by the Cambrian Metaline Formation and is classified into Yellowhead-type (YO) and Josephine-type (JO) ore based on texture and mineralogy. Paleomagnetic results are reported for four Cambrian Metaline Formation sites, one Ordovician Ledbetter slate site, 12 YO...
The CEOS constellation for land surface imaging
G. B. Bailey, Marsha Berger, H. Jeanjean, K. P. Gallo
2007, Conference Paper, Proceedings of SPIE - The International Society for Optical Engineering
A constellation of satellites that routinely and frequently images the Earth's land surface in consistently calibrated wavelengths from the visible through the microwave and in spatial detail that ranges from sub-meter to hundreds of meters would offer enormous potential benefits to society. A well-designed and effectively operated land surface imaging...
Basin structure beneath the Santa Rosa Plain, Northern California: Implications for damage caused by the 1969 Santa Rosa and 1906 San Francisco earthquakes
D.K. McPhee, V.E. Langenheim, S. Hartzell, R. J. McLaughlin, Brad T. Aagaard, R.C. Jachens, C. McCabe
2007, Bulletin of the Seismological Society of America (97) 1449-1457
Regional gravity data in the northern San Francisco Bay region reflect a complex basin configuration beneath the Santa Rosa plain that likely contributed to the significant damage to the city of Santa Rosa caused by the 1969 M 5.6, 5.7 Santa Rosa earthquakes and the...
River enhancement in the Upper Mississippi River basin: Approaches based on river uses, alterations, and management agencies
T. K. O’Donnell, D.L. Galat
2007, Restoration Ecology (15) 538-549
The Upper Mississippi River is characterized by a series of locks and dams, shallow impoundments, and thousands of river channelization structures that facilitate commercial navigation between Minneapolis, Minnesota, and Cairo, Illinois. Agriculture and urban development over the past 200 years have degraded water quality and increased the rate of sediment...
Distribution, habitat, size, and color pattern of Cnemidophorus lemniscatus (Sauria: Teiidae) on Cayo Cochino Pequeño, Honduras
Chad E. Montgomery, Robert N. Reed, Hayley J. Shaw, Scott M. Boback, James M. Walker
2007, Southwestern Naturalist (52) 38-45
Cayo Cochino Pequeño is a 0.64-km2 Caribbean island in the Cayos Cochinos archipelago, Department of Islas de la Bahía, Honduras. One published report noted the presence of the rainbow whiptail (Cnemidophorus lemniscatus) on Cayo Cochino Pequeño, but nothing is known about the biology of this insular population. During a part of...
Remote sensing and GIS technology in the Global Land Ice Measurements from Space (GLIMS) Project
B. Raup, Andreas Kaab, J.S. Kargel, M.P. Bishop, G. Hamilton, E. Lee, F. Paul, F. Rau, D. Soltesz, S.J.S. Khalsa, M. Beedle, C. Helm
2007, Computers & Geosciences (33) 104-125
Global Land Ice Measurements from Space (GLIMS) is an international consortium established to acquire satellite images of the world's glaciers, analyze them for glacier extent and changes, and to assess these change data in terms of forcings. The consortium is organized into a system of Regional Centers, each of which...
Spectral element modelling of fault-plane reflections arising from fluid pressure distributions
M. Haney, R. Snieder, J.-P. Ampuero, R. Hofmann
2007, Geophysical Journal International (170) 933-951
The presence of fault-plane reflections in seismic images, besides indicating the locations of faults, offers a possible source of information on the properties of these poorly understood zones. To better understand the physical mechanism giving rise to fault-plane reflections in compacting sedimentary basins, we numerically model the full elastic wavefield...
Earthquake-by-earthquake fold growth above the Puente Hills blind thrust fault, Los Angeles, California: Implications for fold kinematics and seismic hazard
L.A. Leon, S.A. Christofferson, J.F. Dolan, J.H. Shaw, T. L. Pratt
2007, Journal of Geophysical Research B: Solid Earth (112)
Boreholes and high-resolution seismic reflection data collected across the forelimb growth triangle above the central segment of the Puente Hills thrust fault (PHT) beneath Los Angeles, California, provide a detailed record of incremental fold growth during large earthquakes on this major blind thrust fault. These data document fold growth within...
