Late Neoproterozoic felsite (602.3 +/- 2 Ma) and associated metadiabase dikes in the Reading Prong, Pennsylvania, and rifting of Laurentia
R.C. Smith II
2003, Northeastern Geology and Environmental Sciences (25) 175-185
Felsite dikes in the Rittenhouse Gap iron mine district of the Reading Prong, eastern Pennsylvania, have a close geochemical affinity with the peralkaline Battle Mountain Member of the Robertson River Igneous Suite (RRIS), northern Virginia. These newly recognized Rittenhouse Gap Felsite dikes of the Swabia Creek Igneous Suite (SCIS) of...
Clinical pathology and assessment of pathogen exposure in southern and Alaskan sea otters
K.D. Hanni, J.A.K. Mazet, F.M.D. Gulland, James A. Estes, M. Staedler, M.J. Murray, Melissa A. Miller, David A. Jessup
2003, Journal of Wildlife Diseases (39) 837-850
The southern sea otter (Enhydra lutris nereis) population in California (USA) and the Alaskan sea otter (E. lutris kenyoni) population in the Aleutian Islands (USA) chain have recently declined. In order to evaluate disease as a contributing factor to the declines, health assessments of these two sea otter populations were...
Lithospheric structure, composition, and thermal regime of the East European Craton: Implications for the subsidence of the Russian platform
I.M. Artemieva
2003, Earth and Planetary Science Letters (213) 431-446
A new mechanism for Paleozoic subsidence of the Russian, or East European, platform is suggested, since a model of lithosphere tilting during the Uralian subduction does not explain the post-Uralian sedimentation record. Alternatively, I propose that the Proterozoic and Paleozoic rifting (when a platform-scale Central Russia rift system and a...
Near-field postseismic deformation associated with the 1992 Landers and 1999 Hector Mine, California, earthquakes
J.C. Savage, J. L. Svarc, W.H. Prescott
2003, Journal of Geophysical Research B: Solid Earth (108)
After the Landers earthquake (Mw = 7.3, 1992.489) a linear array of 10 monuments extending about 30 km N50??E on either side of the earthquake rupture plus a nearby offtrend reference monument were surveyed frequently by GPS until 2003.2. The array also spans the rupture of the subsequent Hector Mine...
Application of geographic information systems and remote sensing for quantifying patterns of erosion and water quality
J.C. Ritchie, D.E. Walling, J. Peters
2003, Hydrological Processes (17) 885-886
[No abstract available]...
Mapping Shoreline Change Using Digital Orthophotogrammetry on Maui, Hawaii
C. Fletcher, J. Rooney, M. Barbee, S.-C. Lim, B. Richmond
2003, Conference Paper, Journal of Coastal Research
Digital, aerial orthophotomosaics with 0.5-3.0 m horizontal accuracy, used with NOAA topographic maps (T-sheets), document past shoreline positions on Maui Island, Hawaii. Outliers in the shoreline position database are determined using a least median of squares regression. Least squares linear regression of the reweighted data (outliers excluded) is used to...
Deciphering the social structure of Marbled Murrelets from behavioral observations at sea
Suzann G. Speckman, John F. Piatt, Alan M. Springer
2003, Waterbirds (26) 266-274
We surveyed Marbled Murrelets (Brachyramphus marmoratus) daily from small boats in Auke Bay and Fritz Cove, Alaska, from May through August 1992 and 1993. Differences in numbers of juveniles and in the timing of their presence in the study area between the two years indicated that breeding phenology was late...
The respiratory arsenate reductase from Bacillus selenitireducens strain MLS10
E. Afkar, J. Lisak, C. Saltikov, P. Basu, Ronald S. Oremland, J.F. Stolz
2003, FEMS Microbiology Letters (226) 107-112
The respiratory arsenate reductase from the Gram-positive, haloalkaliphile, Bacillus selenitireducens strain MLS10 was purified and characterized. It is a membrane bound heterodimer (150 kDa) composed of two subunits ArrA (110 kDa) and ArrB (34 kDa), with an apparent Km for arsenate of 34 µM and Vmax of 2.5 µmol min−1 mg−1. Optimal activity occurred at pH 9.5...
Migration of precocious male hatchery chinook salmon in the Umatilla River, Oregon
Christian E. Zimmerman, R.W. Stonecypher Jr., M.C. Hayes
2003, North American Journal of Fisheries Management (23) 1006-1014
Between 1993 and 2000, precocious yearling males of hatchery-produced fall and spring chinook salmon Oncorhynchus tshawytscha composed 3.6-82.1% of chinook salmon runs to the Umatilla River, Oregon. These yearling males are smaller than typical jack salmon, which spend a full winter in the ocean, and are commonly referred to as...
Geochronology and eruptive history of the Katmai volcanic cluster, Alaska Peninsula
Wes Hildreth, Marvin A. Lanphere, Judy Fierstein
2003, Earth and Planetary Science Letters (214) 93-114
In the Katmai district of the Alaska Peninsula, K–Ar and 40Ar/39Ar ages have been determined for a dozen andesite–dacite stratocones on the arc front and for 11 rear-arc volcanoes, 10 of which are monogenetic. Tied to mapping and stratigraphic studies, our dating emphasized proximal basal lavas that rest on basement rocks,...
New insights into the exploration for Mississippi Valley-type lead-zinc deposits
C.R. McClung, D. L. Leach, J. Gutzmer, D. Bradley, S. Gardoll
2003, Transactions of the Institution of Mining and Metallurgy, Section B: Applied Earth Science (112)
[No abstract available]...
Temperature-pressure conditions in coalbed methane reservoirs of the Black Warrior basin: Implications for carbon sequestration and enhanced coalbed methane recovery
J.C. Pashin, M.R. McIntyre
2003, International Journal of Coal Geology (54) 167-183
Sorption of gas onto coal is sensitive to pressure and temperature, and carbon dioxide can be a potentially volatile supercritical fluid in coalbed methane reservoirs. More than 5000 wells have been drilled in the coalbed methane fields of the Black Warrior basin in west-central Alabama, and the hydrologic and geothermic...
The importance of environmental quality and catch potential to fishing site selection by freshwater anglers in Mississippi
H.L. Schramm Jr., P.D. Gerard, D.A. Gill
2003, North American Journal of Fisheries Management (23) 512-522
We measured the importance of 24 fishing site attributes to Mississippi freshwater anglers. Factor analysis identified four multiattribute factors as important in the selection of fishing location: CLEAN ENVIRONMENT CATCH, COST AND HARVEST and AMENITIES AND SAFETY. In general, the importance of site selection factors differed little among anglers grouped...
Bone formation is not impaired by hibernation (disuse) in black bears Ursus americanus
S.W. Donahue, M.R. Vaughan, L.M. Demers, H.J. Donahue
2003, Journal of Experimental Biology (206) 4233-4239
Disuse by bed rest, limb immobilization or space flight causes rapid bone loss by arresting bone formation and accelerating bone resorption. This net bone loss increases the risk of fracture upon remobilization. Bone loss also occurs in hibernating ground squirrels, golden hamsters, and little brown bats by arresting bone formation...
Photographic techniques for characterizing streambed particle sizes
Matthew S. Whitman, Edward H. Moran, Robert T. Ourso
2003, Transactions of the American Fisheries Society (132) 605-610
We developed photographic techniques to characterize coarse (>2-mm) and fine (≤2-mm) streambed particle sizes in 12 streams in Anchorage, Alaska. Results were compared with current sampling techniques to assess which provided greater sampling efficiency and accuracy. The streams sampled were wadeable and contained gravel—cobble streambeds. Gradients ranged from about 5%...
Integrated field and laboratory tests to evaluate effects of metals-impacted wetlands on amphibians: A case study from Montana
G. Linder
Linder G.L.Krest S.Sparling D.Little E.E., editor(s)
2003, Conference Paper, ASTM Special Technical Publication
Mining activities frequently impact wildlife habitats, and a wide range of habitats may require evaluations of the linkages between wildlife and environmental stressors common to mining activities (e.g., physical alteration of habitat, releases of chemicals such as metals and other inorganic constituents as part of the mining operation). Wetlands, for...
Palynology, petrography and geochemistry of the Sewickley coal bed (Monongahela Group, Late Pennsylvanian), Northern Appalachian Basin, USA
C.F. Eble, B.S. Pierce, W.C. Grady
2003, International Journal of Coal Geology (55) 187-204
Forty-two bench samples of the Sewickley coal bed were collected from seven localities in the northern Appalachian Basin and analyzed palynologically, petrographically, and geochemically. The Sewickley coal bed occurs in the middle of the Pittsburgh Formation (Monongahela Group) and is of Late Pennsylvanian age. Palynologically, it is dominated by spores...
The 1997 eruption of Okmok Volcano, Alaska: A synthesis of remotely sensed imagery
M.R. Patrick, J. Dehn, K.R. Papp, Z. Lu, K. Dean, L. Moxey, P. Izbekov, R. Guritz
2003, Journal of Volcanology and Geothermal Research (127) 87-105
Okmok Volcano, in the eastern Aleutian Islands, erupted in February and March of 1997 producing a 6-km-long lava flow and low-level ash plumes. This caldera is one of the most active in the Aleutian Arc, and is now the focus of international multidisciplinary studies. A synthesis of remotely sensed data...
Sediment-starved sand ridges on a mixed carbonate/siliciclastic inner shelf off west-central Florida
S. E. Harrison, S. D. Locker, A. C. Hine, J.H. Edwards, D. F. Naar, D.C. Twichell, D. J. Mallinson
2003, Marine Geology (200) 171-194
High-resolution side-scan mosaics, sediment analyses, and physical process data have revealed that the mixed carbonate/siliciclastic, inner shelf of west-central Florida supports a highly complex field of active sand ridges mantled by a hierarchy of bedforms. The sand ridges, mostly oriented obliquely to the shoreline trend, extend from 2 km to...
Factors affecting food chain transfer of mercury in the vicinity of the Nyanza site, Sudbury River, Massachusetts
T.A. Haines, T.W. May, R.T. Finlayson, S.E. Mierzykowski
2003, Environmental Monitoring and Assessment (86) 211-232
The influence of the Nyanza Chemical Waste Dump Superfund Site on the Sudbury River, Massachusetts, was assessed by analysis of sediment, fish prey organisms, and predator fish from four locations in the river system. Whitehall Reservoir is an impoundment upstream of the site, and Reservoir #2 is an impoundment downstream...
Signatures of the seismic source in EMD-based characterization of the 1994 Northridge, California, earthquake recordings
R.R. Zhang, S. Ma, S. Hartzell
2003, Bulletin of the Seismological Society of America (93) 501-518
In this article we use empirical mode decomposition (EMD) to characterize the 1994 Northridge, California, earthquake records and investigate the signatures carried over from the source rupture process. Comparison of the current study results with existing source inverse solutions that use traditional data processing suggests that the EMD-based characterization contains...
Biostratigraphy and structure of paleozoic host rocks and their relationship to Carlin-type gold deposits in the Jerritt Canyon mining district, Nevada
S. G. Peters, A. K. Armstrong, A. G. Harris, R.L. Oscarson, P.J. Noble
2003, Economic Geology (98) 317-337
The Jerritt Canyon mining district in the northern Independence Range, northern Nevada, contains multiple, nearly horizontal, thrust masses of platform carbonate rocks that are exposed in a series of north- to northeast-elongated, tectonic windows through rocks of the Roberts Mountains allochthon. The Roberts Mountains allochthon was emplaced during the Late...
Global forest cover mapping for the United Nations Food and Agriculture Organization forest resources assessment 2000 program
Z. Zhu, E. Waller
2003, Forest Science (49) 369-380
Many countries periodically produce national reports on the status and changes of forest resources, using statistical surveys and spatial mapping of remotely sensed data. At the global level, the Food and Agriculture Organization (FAO) of the United Nations has conducted a Forest Resources Assessment (FRA) program every 10 yr since...
Mapping the spatial distribution and time evolution of snow water equivalent with passive microwave measurements
J. Guo, L. Tsang, E.G. Josberger, A.W. Wood, J.-N. Hwang, D.P. Lettenmaier
2003, IEEE Transactions on Geoscience and Remote Sensing (41) 612-621
This paper presents an algorithm that estimates the spatial distribution and temporal evolution of snow water equivalent and snow depth based on passive remote sensing measurements. It combines the inversion of passive microwave remote sensing measurements via dense media radiative transfer modeling results with snow accumulation and melt model predictions...
Comparisons of coarse and fine versions of two carbons for reducing the bioavailabilities of sediment-bound hydrophobic organic contaminants
J.A. Lebo, J.N. Huckins, J. D. Petty, W.L. Cranor, K.T. Ho
2003, Chemosphere (50) 1309-1317
Coarse (whole) and finely ground Ambersorb 1500 and coarse and fine coconut charcoal were compared as to their efficiencies in scavenging organic contaminants desorbed from sediment. Aqueous slurries of a test sediment spiked (1 ppm) with p,p???-DDE (DDE), 2,2???,5,5???-tetrachlorobiphenyl (TCB), naphthalene (NAP), or phenanthrene (PHEN), and containing 1% levels of...
