C.K. Dodd Jr., Marian L. Griffey
2004, Herpetological Review (35) 233-235
[No abstract available]...
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Publication Extents
Not all publications have extents, not all extents are completely accurateK.E. Livo, D. H. Knepper Jr.
2004, Conference Paper, 2004 SME Annual Meeting Preprints
Modern remote sensing provides a means for locating and characterizing exposed mineralized systems in many parts of the world. These capabilities are non-invasive and help target specific areas for more detailed exploration. An example of how remote sensing technology can be used is evident from a study of the Questa...
M.G. Mesa, L.K. Weiland, G.B. Zydlewski
2004, Northwest Science (78) 59-65
We estimated the critical swimming speeds (Ucrit) of wild bull trout at 6??, 11??, and 15??C in laboratory experiments. At 11??C, 5 fish ranging from 11 to 19 cm in length had a mean Ucrit of 48.24 cm/s or 3.22 body lengths per second (BL/s). Also at 11??C , 6...
W.S. Kirk
2004, Minerals and Energy - Raw Materials Report (19) 16-27
China has become the leading iron ore consuming nation, and, based on recent steel production capacity increases and plans for more, its consumption will almost certainly to continue to grow. China's iron ore industry, however, faces a number of problems. China's iron ore is low-grade, expensive to process, and its...
M.J. Moran, W.W. Lapham, B.L. Rowe, J.S. Zogorski
2004, Journal of the American Water Resources Association (40) 1141-1157
The U.S. Geological Survey (USGS) collected or compiled data on volatile organic compounds (VOCs) in samples of untreated ground water from 1,926 rural private wells during 1986 to 1999. At least one VOC was detected in 12 percent of samples from rural private wells. Individual VOCs were not commonly detected...
Peter J. Haeussler, David P. Schwartz, Timothy E. Dawson, Heidi D. Stenner, James J. Lienkaemper, Brian L. Sherrod, Francesca R. Cinti, Paola Montone, Patricia Craw, Anthony J. Crone, Stephen F. Personius
2004, Bulletin of the Seismological Society of America (94) S23-S52
The 3 November 2002 Denali fault, Alaska, earthquake resulted in 341 km of surface rupture on the Susitna Glacier, Denali, and Totschunda faults. The rupture proceeded from west to east and began with a 48-km-long break on the previously unknown Susitna Glacier thrust fault. Slip on this thrust averaged about...
B.D. Clinton, J.M. Vose, D.A. Vroblesky, G. J. Harvey
2004, International Journal of Phytoremediation (6) 239-252
The use of plants to remediate polluted groundwater is becoming an attractive alternative to more expensive traditional techniques. In order to adequately assess the effectiveness of the phytoremediation treatment, a clear understanding of water-use habits by the selected plant species is essential. We examined the relative uptake of surface water...
Laurence A. Soderblom, R. C. Anderson, R. E. Arvidson, J.F. Bell III, N.A. Cabrol, W. Calvin, P. R. Christensen, B. C. Clark, T. Economou, B.L. Ehlmann, W. H. Farrand, D. Fike, Ralf Gellert, T.D. Glotch, M.P. Golombek, R. Greeley, J.P. Grotzinger, Kenneth E. Herkenhoff, D.J. Jerolmack, J. R. Johnson, B. Jolliff, C. Klingelhofer, A.H. Knoll, Z.A. Learner, R. Li, M. C. Malin, S. M. McLennan, H.Y. McSween, D. W. Ming, R.V. Morris, J. W. Rice Jr., L. Richter, R. Rieder, D. Rodionov, C. Schroder, F.P. Seelos IV, J.M. Soderblom, S. W. Squyres, R. Sullivan, W.A. Watters, C.M. Weitz, M.B. Wyatt, A. Yen, J. Zipfel
2004, Science (306) 1723-1726
The soils at the Opportunity site are fine-grained basaltic sands mixed with dust and sulfate-rich outcrop debris. Hematite is concentrated in spherules eroded from the strata. Ongoing saltation exhumes the spherules and their fragments, concentrating them at the surface. Spherules emerge from soils coated, perhaps from subsurface cementation, by salts....
N. Ohte, S.D. Sebestyen, J. B. Shanley, D.H. Doctor, C. Kendall, Scott D. Wankel, E.W. Boyer
2004, Geophysical Research Letters (31)
The denitrifier method to determine the dual isotopic composition (??15N and ??18O) of nitrate is well suited for studies of nitrogen contributions to streams during runoff events. This method requires only 70 nmol of NO3- and enables high throughput of samples. We studied nitrate sources to a headwater stream during...
J. R. Johnson, W.M. Grundy, M.K. Shepard
2004, Icarus (171) 546-556
Interpretations of visible/near-infrared reflectance spectra of Mars are often complicated by the effects of dust coatings that obscure the underlying materials of interest. The ability to separate the spectral reflectance signatures of coatings and substrates requires an understanding of how their individual and combined reflectance properties vary with phase angle....
H.Y. McSween, R. E. Arvidson, J.F. Bell III, D. Blaney, N.A. Cabrol, P. R. Christensen, B. C. Clark, J.A. Crisp, L.S. Crumpler, D.J. Des Marias, J.D. Farmer, Ralf Gellert, A. Ghosh, S. Gorevan, T. Graff, J. Grant, L.A. Haskin, Kenneth E. Herkenhoff, J. R. Johnson, B.L. Jolliff, G. Klingelhoefer, A.T. Knudson, S. McLennan, K.A. Milam, J.E. Moersch, R.V. Morris, R. Rieder, S. W. Ruff, P.A. De Souza Jr., S. W. Squyres, H. Wanke, A. Wang, M.B. Wyatt, A. Yen, J. Zipfel
2004, Science (305) 842-845
The Spirit landing site in Gusev Crater on Mars contains dark, fine-grained, vesicular rocks interpreted as lavas. Pancam and Mini–Thermal Emission Spectrometer (Mini-TES) spectra suggest that all of these rocks are similar but have variable coatings and dust mantles. Magnified images of brushed and abraded rock surfaces show alteration rinds...
C. H. Marshall, R.A. Pielke Sr., L. T. Steyaert
2004, Monthly Weather Review (132) 2243-2258
On several occasions, winter freezes have wrought severe destruction on Florida agriculture. A series of devastating freezes around the turn of the twentieth century, and again during the 1980s, were related to anomalies in the large-scale flow of the ocean–atmosphere system. During the twentieth century, substantial areas of wetlands in...
C.R. Anderson Jr., F.G. Lindzey, D.B. McDonald
2004, Journal of Mammalogy (85) 1207-1214
We examined the genetic structure of 5 Wyoming cougar (Puma concolor) populations surrounding the Wyoming Basin, as well as a population from southwestern Colorado. When using 9 microsatellite DNA loci, observed heterozygosity was similar among populations (HO = 0.49-0.59) and intermediate to that of other large carnivores. Estimates of genetic...
Thomas P. Albright, T.G. Moorhouse, T.J. McNabb
2004, Journal of Aquatic Plant Management (42) 73-84
Water hyacinth (Eichhornia crassipes (Mart.) Solms) is an invasive aquatic macrophyte associated with major negative economic and ecological impacts to the Lake Victoria region since the plant's establishment in Uganda in the 1980s. Reliable estimates of water hyacinth distribution and extent are required to gauge the severity of the problem...
P.-Y. Henry, R.E. Bennetts, Y. Kayser, H. Hafner
2004, Waterbirds (27) 480-482
When studying breeding dispersal with marked individuals, manipulation-induced disturbance should not affect movement patterns. As part of a study on the Little Egret (Egretta garzetta), we tested whether the capture of breeding adults at their nest and handling (i.e., disturbance) increased their probability to move to a new colony in...
H. Downes, R. Macdonald, B.G.J. Upton, K.G. Cox, J.-L. Bodinier, P.R.D. Mason, D. James, P.G. Hill, B. C. Hearn Jr.
2004, Journal of Petrology (45) 1631-1662
Ultramafic xenoliths in Eocene minettes of the Bearpaw Mountains volcanic field (Montana, USA), derived from the lower lithosphere of the Wyoming craton, can be divided based on textural criteria into tectonite and cumulate groups. The tectonites consist of strongly depleted spinel lherzolites, harzbugites and dunites. Although their mineralogical compositions are...
L.L. Turner, M.P. Brown, D. Chambers, C.A. Davis, J. Diehl, C.S. Hitchcock, T.L. Holzer, R.L. Nigbor, C. Plumb, C. Real, M. Reimer, J.H. Steidl, J.I. Sun, J. C. Tinsley, D. Vaughn
Yegian M.K.Kavazanjian E., editor(s)
2004, Conference Paper, Geotechnical Special Publication
This paper presents the findings and recommendations of the User Scenario Work Group (USWG) in identifying a baseline of current practices within the geo-professional community and prioritizing desired functional requirements in the development of a comprehensive geotechnical information management system. This work was conducted as an initial phase of a...
John Crusius, Thomas F. Pedersen, Stephanie Kienast, Lloyd D. Keigwin, Laurent Labeyrie
2004, Geology (32) 633-636
Elevated productivity in the northwest Pacific is suggested as a new possible control driving past intervals of low-O2 intermediate water along the western continental margin of North America. According to this mechanism, O2 consumption would occur near the site of formation of North Pacific Intermediate Water (NPIW), due to increased respiration of...
D.W. Anning
Sehlke G.Hayes D.F.Stevens D.K., editor(s)
2004, Conference Paper, Proceedings of the 2004 World Water and Environmetal Resources Congress: Critical Transitions in Water and Environmetal Resources Management
The evaluation of uncertainty in low-flow data collected from three streamflow-gaging stations on the upper Verde River, Arizona, was presented. In downstream order, the stations are Verde River near Paulden, Verde River near Clarkdale, and Verde River near Camp Verde. A monitoring objective of the evaluation was to characterize discharge...
C.C. Cleveland, J. C. Neff, A.R. Townsend, E. Hood
2004, Ecosystems (7) 275-285
Fluxes of dissolved organic matter (DOM) are an important vector for the movement of carbon (C) and nutrients both within and between ecosystems. However, although DOM fluxes from throughfall and through litterfall can be large, little is known about the fate of DOM leached from plant canopies, or from the...
K.M. Ramstad, C.A. Woody, G. Kevin Sage, F.W. Allendorf
2004, Molecular Ecology (13) 277-290
Bottlenecks can have lasting effects on genetic population structure that obscure patterns of contemporary gene flow and drift. Sockeye salmon are vulnerable to bottleneck effects because they are a highly structured species with excellent colonizing abilities and often occupy geologically young habitats. We describe genetic divergence among and genetic variation...
V.M. Heilweil, D. K. Solomon, K. S. Perkins, K. M. Ellett
2004, Ground Water (42) 589-600
Dissolved helium and bromide tracers were used to evaluate trapped gas during an infiltration pond experiment. Dissolved helium preferentially partitioned into trapped gas bubbles, or other pore air, because of its low solubility in water. This produced observed helium retardation factors of as much as 12 relative to bromide. Numerical...
J. Jeffery Isely, D.G. Trested, T.B. Grabowski
2004, North American Journal of Aquaculture (66) 73-74
Large-format visible implant alphanumeric (VIalpha) tags were implanted into 15,400 rainbow trout Oncorhynchus mykiss. Tag retention after 25 d was 82.6%, and survivorship was 92.8%. The results of this study compare favorably with those of similar studies on other species and suggest that large-format VIalpha tags are an appropriate choice...
D.G. Simpkins, W.A. Hubert, C. Martinez Del Rio, D.C. Rule
2004, Journal of Fish Biology (65) 530-544
The hypothesis that body size and swimming velocity affect proximate body composition, wet mass and size-selective mortality of fasted fish was evaluated using small (107 mm mean total length, LT) and medium (168 mm mean LT) juvenile rainbow trout Oncorhynchus mykiss that were sedentary or swimming (c. 1 or 2...
J.T. Lisle, J.C. Priscu
2004, Microbial Ecology (47) 427-439
The McMurdo Dry Valleys of Antarctica form the coldest and driest ecosystem on Earth. Within this region there are a number of perennially ice-covered (3–6 m thick) lakes that support active microbial assemblages and have a paucity of metazoans. These lakes receive limited allochthonous input of carbon and nutrients, and...