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Page 2610, results 65226 - 65250

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Not all publications have extents, not all extents are completely accurate
Biology and conservation of Xantus's Murrelet: Discovery, taxonomy and distribution
Harry R. Carter, Spencer G. Sealy, Esther E. Burkett, John F. Piatt
2005, Marine Ornithology: Journal of Seabird Research and Conservation (33) 81-87
The biology of Xantus's Murrelets Synthliboramphus hypoleucus is similar in many respects to better-studied Ancient Murrelets S. antiquus, especially regarding morphology and the species' precocial mode of post-hatching development. It nests mainly in rock crevices but also under shrubs on islands in southern California, United States, and northwestern Baja California,...
Control of Fe(III) site occupancy on the rate and extent of microbial reduction of Fe(III) in nontronite
Deb P. Jaisi, R.K. Kukkadapu, D. D. Eberl, H. Dong
2005, Geochimica et Cosmochimica Acta (69) 5429-5440
A quantitative study was performed to understand how Fe(III) site occupancy controls Fe(III) bioreduction in nontronite by Shewanella putrefaciens CN32. NAu-1 and NAu-2 were nontronites and contained Fe(III) in different structural sites with 16 and 23% total iron (w/w), respectively, with almost all iron as Fe(III). Mo??ssbauer spectroscopy showed that...
Seismic signature of a phreatic explosion: Hydrofracturing damage at Karthala volcano, Grande Comore Island, Indian Ocean
C. Savin, J.-R. Grasso, P. Bachelery
2005, Bulletin of Volcanology (67) 717-731
Karthala volcano is a basaltic shield volcano with an active hydrothermal system that forms the southern two-thirds of the Grande Comore Island, off the east coat of Africa, northwest of Madagascar. Since the start of volcano monitoring by the local volcano observatory in 1988, the July 11th, 1991 phreatic eruption...
Quantitative assessment of benthic food resources for juvenile Gulf sturgeon, Acipenser oxyrinchus desotoi in the Suwannee River estuary, Florida, USA
R. A. Brooks, K. J. Sulak
2005, Estuaries (28) 767-775
Gulf sturgeon, Acipenser oxyrinchus desotoi, forage extensively in the Suwannee River estuary following emigration out of the Suwannee River, Florida. While in the estuary, juvenile Gulf sturgeon primarily feed on benthic infauna. In June–July 2002 and February–April 2003, random sites within the estuary were sampled for benthic macrofauna (2002 n...
Iterative use of the Bruggeman-Hanai-Sen mixing model to determine water saturations in sand
R.H. Johnson, E. P. Poeter
2005, Geophysics (70)
The accuracy of the Bruggeman-Hanai-Sen (BHS) mixing model has been previously demonstrated for two-material mixtures during BHS model development. Using permittivities determined from modeling ground-penetrating radar (GPR) data, the BHS model has been iteratively applied to three-material mixtures of water, sand, and a dense, nonaqueous-phase liquid (DNAPL). However, the accuracy...
Anatahan, Northern Mariana Islands: Reconnaissance geological observations during and after the volcanic crisis of spring 1990, and monitoring prior to the May 2003 eruption
S.K. Rowland, J. P. Lockwood, F. A. Trusdell, R. B. Moore, M. K. Sako, R. Y. Koyanagi, G. Kojima
2005, Journal of Volcanology and Geothermal Research (146) 26-59
Anatahan island is 9.5 km east–west by 3.5 km north–south and truncated by an elongate caldera 5 km east–west by 2.5 km north–south. A steep-walled pit crater ∼1 km across and ∼200 m deep occupies the eastern part of the caldera. The island is the summit region of a mostly...
Undersea landslides: Extent and significance in the Pacific Ocean, an update
H.J. Lee
2005, Natural Hazards and Earth System Sciences (5) 877-892
Submarine landslides are known to occur disproportionately in a limited number of environments including fjords, deltas, canyons, volcanic islands and the open continental slope. An evaluation of the progress that has been made in understanding Pacific Ocean submarine landslides over the last 15 years shows that mapping technologies have improved...
Foraging location and site fidelity of the Double-crested Cormorant on Oneida Lake, New York
J.T.H. Coleman, M. E. Richmond, L. G. Rudstam, P.M. Mattison
2005, Waterbirds (28) 498-510
We studied the foraging behavior of the Double-crested Cormorant (Phalacrocorax auritus) on Oneida Lake, New York, by monitoring the activities of 27 radio-tagged birds in July and August of 1999 and 2000. A total of 224 locations were obtained of cormorants actively diving, and presumed foraging, at the time of...
Specific conductance and water temperature data for San Francisco Bay, California, for Water Year 2004
P.A. Buchanan
2005, Interagency Ecological Program Newsletter (18) 2-6
This article presents time-series graphs of specificconductance and water-temperature data collected in San Francisco Bay during water year 2004 (October 1, 2003, through September 30, 2004). Specific-conductance and water-temperature data were recorded at 15-minute intervals at seven U.S. Geological Survey (USGS) locations (Figure 1, Table 1). Specific-conductance and water-temperature data...
Northern Goshawk diet in Minnesota: An Analysis using video recording systems
B.L. Smithers, C. W. Boal, D. E. Andersen
2005, Journal of Raptor Research (39) 264-273
We used video-recording systems to collect diet information at 13 Northern Goshawk (Accipiter gentilis) nests in Minnesota during the 2000, 2001, and 2002 breeding seasons. We collected 4871 hr of video footage, from which 652 prey deliveries were recorded. The majority of prey deliveries identified were mammals (62%), whereas birds...
U-Pb dating of large zircons in low-temperature jadeitite from the Osayama serpentinite melange, southwest Japan: Insights into the timing of serpentinization
T. Tsujimori, J. G. Liou, J. Wooden, T. Miyamoto
2005, International Geology Review (47) 1048-1057
Crystals of zircon up to 3 mm in length occur in jadeitite veins in the Osayama serpentinite mélange, Southwest Japan. The zircon porphyroblasts show pronounced zoning, and are characterized by both low Th/U ratios (0.2-0.8) and low Th and U abundances (Th = 1-81 ppm; U = 6-149 ppm). They...
Multispectral imaging contributions to global land ice measurements from space
J.S. Kargel, M. J. Abrams, M.P. Bishop, A. Bush, G. Hamilton, H. Jiskoot, Andreas Kaab, H. H. Kieffer, E.M. Lee, F. Paul, F. Rau, B. Raup, J.F. Shroder, D. Soltesz, D. Stainforth, L. Stearns, R. Wessels
2005, Remote Sensing of Environment (99) 187-219
Global Land Ice Measurements from Space (GLIMS) is an international consortium established to acquire satellite images of the world's glaciers, analyse them for glacier extent and changes, and assess change data for causes and implications for people and the environment. Although GLIMS is making use of multiple remote-sensing systems, ASTER...
Net alkalinity and net acidity 2: Practical considerations
C.S. Kirby, C.A. Cravotta III
2005, Applied Geochemistry (20) 1941-1964
The pH, alkalinity, and acidity of mine drainage and associated waters can be misinterpreted because of the chemical instability of samples and possible misunderstandings of standard analytical method results. Synthetic and field samples of mine drainage having various initial pH values and concentrations of dissolved metals and alkalinity were titrated...
Net alkalinity and net acidity 1: Theoretical considerations
C.S. Kirby, C.A. Cravotta III
2005, Applied Geochemistry (20) 1920-1940
Net acidity and net alkalinity are widely used, poorly defined, and commonly misunderstood parameters for the characterization of mine drainage. The authors explain theoretical expressions of 3 types of alkalinity (caustic, phenolphthalein, and total) and acidity (mineral, CO2, and total). Except for rarely-invoked negative alkalinity, theoretically defined total alkalinity is...
Petroscirtes pylei, a new saber-toothed blenny from the Fiji Islands (Teleostei: Blenniidae)
William F. Smith-Vaniz
2005, Zootaxa (1046) 29-36
Petroscirtes pylei is described from three specimens, 20.3–40.9 mm SL, obtained from a deepwater reef off Suva, Viti Levu, Fiji Islands. It is distinguished from all other congeners by its color pattern, including the presence of two dark body stripes, the lower one broadly extending onto the anal fin, and the dorsal...
Extraordinary flood response of a small urban watershed to short-duration convective rainfall
J. A. Smith, A.J. Miller, M.L. Baeck, P.A. Nelson, G. T. Fisher, K.L. Meierdiercks
2005, Journal of Hydrometeorology (6) 599-617
The 9.1 km2 Moores Run watershed in Baltimore, Maryland, experiences floods with unit discharge peaks exceeding 1 m3 s-1 km-2 12 times yr-1, on average. Few, if any, drainage basins in the continental United States have a higher frequency. A thunderstorm system on 13 June 2003 produced the record flood...
Recent advances to obtain real - Time displacements for engineering applications
M. Çelebi
2005, Conference Paper, Proceedings of the Structures Congress and Exposition
This paper presents recent developments and approaches (using GPS technology and real-time double-integration) to obtain displacements and, in turn, drift ratios, in real-time or near real-time to meet the needs of the engineering and user community in seismic monitoring and assessing the functionality and damage condition of structures. Drift ratios...
Assessing the competitive ability of Japanese stilt grass, Microstegium vimineum (Trin.) A. Camus
S. A. Leicht, J. A. Silander Jr., K. Greenwood
2005, Journal of the Torrey Botanical Society (132) 573-580
Microstegium vimineum (Japanese stilt grass) is an invasive grass in the eastern half of the United States which can form dense monocultures in forest understories, displacing native species. Although the loss of native species has been observed in the field, the actual competitive ability of this grass has not been...
Lithologic mapping of the Mordor, NT, Australia ultramafic complex by using the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER)
L. C. Rowan, J.C. Mars, C.J. Simpson
2005, Remote Sensing of Environment (99) 105-126
Spectral measurements made in the Mordor Pound, NT, Australia study area using the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER), in the laboratory and in situ show dominantly Al-OH and ferric-iron VNIR-SWIR absorption features in felsic rock spectra and ferrous-iron and Fe,Mg-OH features in the mafic-ultramafic rock spectra. ASTER...
Automated mapping of hammond's landforms
Alisa L. Gallant, D.D. Brown, R.M. Hoffer
2005, IEEE Geoscience and Remote Sensing Letters (2) 384-388
We automated a method for mapping Hammond's landforms over large landscapes using digital elevation data. We compared our results against Hammond's published landform maps, derived using manual interpretation procedures. We found general agreement in landform patterns mapped by the manual and the automated approaches, and very close agreement in characterization...
Reconstructing a mid-Cretaceous landscape from paleosols in western Canada
David F. Ufnar, Luis A. Gonzalez, Greg A. Ludvigson, Richard L. Brenner, B.J. Witzke, D. Leckie
2005, Journal of Sedimentary Research (75) 984-996
The Albian Stage of the mid-Cretaceous was a time of equable climate conditions with high sea levels and broad shallow epeiric seas that may have had a moderating affect on continental climates. A Late Albian landscape surface that developed during a regression and subsequent sea-level rise in the Western Canada...
Neocrystallization, fabrics and age of clay minerals from an exposure of the Moab Fault, Utah
J.G. Solum, B.A. van der Pluijm, D.R. Peacor
2005, Journal of Structural Geology (27) 1563-1576
Pronounced changes in clay mineral assemblages are preserved along the Moab Fault (Utah). Gouge is enriched up to ???40% in 1Md illite relative to protolith, whereas altered protolith in the damage zone is enriched ???40% in illite-smectite relative to gouge and up to ???50% relative to protolith. These mineralogical changes...
A comparison of the influences of urbanization in contrasting environmental settings on stream benthic algal assemblages
M. Potapova, J.F. Coles, E.M.P. Giddings, H. Zappia
2005, American Fisheries Society Symposium (2005) 333-359
Patterns of stream benthic algal assemblages along urbanization gradients were investigated in three metropolitan areas-Boston (BOS), Massachusetts; Birmingham (BIR), Alabama; and Salt Lake City (SLC), Utah. An index of urban intensity derived from socioeconomic, infrastructure, and land-use characteristics was used as a measure of urbanization. Of the various attributes of...
Base- and precious-metal deposits in the Basin and Range of Southern California and Southern Nevada - Metallogenic implications of lead isotope studies
S. E. Church, D. P. Cox, J. L. Wooden, J.V. Tingley, R. B. Vaughn
2005, Earth-Science Reviews (73) 323-346
Southern California and southern Nevada contain abundant lead-zinc deposits with strikingly different characteristics. On the west, the Darwin Terrane contains abundant Jurassic and Cretaceous intrusions surrounded by lead-zinc skarn and replacement deposits rich in pyrite and manganese minerals. The Tecopa Terrane is east of the Darwin Terrane and contains some...