Heat flow in the SAFOD pilot hole and implications for the strength of the San Andreas Fault
C.F. Williams, F.V. Grubb, S.P. Galanis Jr.
2004, Geophysical Research Letters (31)
Detailed thermal measurements have been acquired in the 2.2-km-deep SAFOD pilot hole, located 1.8 km west of the SAF near Parkfield, California. Heat flow from the basement section of the borehole (770 to 2160 m) is 91 mW m-2, higher than the published 74 mW m -2 average for the...
A mechanical model of the San Andreas fault and SAFOD Pilot Hole stress measurements
J. Chery, Mark D. Zoback, S. Hickman
2004, Geophysical Research Letters (31)
Stress measurements made in the SAFOD pilot hole provide an opportunity to study the relation between crustal stress outside the fault zone and the stress state within it using an integrated mechanical model of a transform fault loaded in transpression. The results of this modeling indicate that only a fault...
Effects of dissolved carbonate on arsenate adsorption and surface speciation at the hematite-water interface
Y. Arai, D.L. Sparks, J.A. Davis
2004, Environmental Science & Technology (38) 817-824
Effects of dissolved carbonate on arsenate [As(V)] reactivity and surface speciation at the hematite−water interface were studied as a function of pH and two different partial pressures of carbon dioxide gas [PCO2 = 10-3.5 atm and ∼0; CO2-free argon (Ar)] using adsorption kinetics, pseudo-equilibrium adsorption/titration experiments, extended X-ray absorption...
Subsurface fate of spilled petroleum hydrocarbons in continuous permafrost
K. McCarthy, L. Walker, L. Vigoren
2004, Cold Regions Science and Technology (38) 43-54
Accidental releases of approximately 2000 m3 of fuel have resulted in subsurface contamination adjacent to Imikpuk Lake, a drinking-water source near Barrow, AK. This paper presents a conceptual model of the distribution and transport of subsurface free-phase hydrocarbons at this site. The mean annual temperature in Barrow is -13 ??C,...
Pancam multispectral imaging results from the opportunity Rover at Meridiani Planum
J.F. Bell III, S. W. Squyres, R. E. Arvidson, H.M. Arneson, D. Bass, W. Calvin, W. H. Farrand, W. Goetz, M. Golombek, R. Greeley, J. Grotzinger, E. Guinness, A. G. Hayes, M.Y.H. Hubbard, Kenneth E. Herkenhoff, M. J. Johnson, J. R. Johnson, J. Joseph, K.M. Kinch, M.T. Lemmon, R. Li, M.B. Madsen, J.N. Maki, M. Malin, E. McCartney, S. McLennan, H.Y. McSween Jr., D. W. Ming, R.V. Morris, E.Z. Noe Dobrea, T. J. Parker, J. Proton, J. W. Rice Jr., F. Seelos, J.M. Soderblom, Laurence A. Soderblom, J. N. Sohl-Dickstein, R.J. Sullivan, C.M. Weitz, M.J. Wolff
2004, Science (306) 1703-1709
Panoramic Camera (Pancam) images from Meridiani Planum reveal a low-albedo, generally flat, and relatively rock-free surface. Within and around impact craters and fractures, laminated outcrop rocks with higher albedo are observed. Fine-grained materials include dark sand, bright ferric iron-rich dust, angular rock clasts, and millimeter-size spheroidal granules that are eroding...
Status of Ash Meadows speckled dace in Bradford Springs
T. Leavy, R.R McShane, K.M. Swaim, G.G. Scoppettone
2004, Report
No abstract available ...
Xenobiotic impact on Arctic char: Nutritional modulation and physiological consequences
A.G. Maule
2004, Report
No abstract available ...
Concentrations of arsenic, cadmium, copper, lead, selenium, and zinc in fish from the Mississippi River Basin, 1995
Christopher J. Schmitt
2004, Environmental Monitoring and Assessment (90) 289-321
Fish were collected in late 1995 from 34 National Contaminant Biomonitoring Program (NCBP) stations and 12 National Water Quality Assessment Program (NAWQA) stations in the Mississippi River basin (MRB), and in late 1996 from a reference site in West Virginia. The NCBP sites represented key points (dams, tributaries, etc.) in...
Effects of Ichthyophonus on survival and reproductive success of Yukon River Chinook salmon. Final report for study 01-200
R. Kocan, P. Hershberger, J. Winton
2004, Report
No abstract available ...
Three-dimensional fish tracking to evaluate the removable spillway weir at Lower Granite Dam during 2003, Annual report 2003
K.M Cash, T.W Hatton, E.C. Jones, R.J. Magie, N.S. Adams, D.W. Rondorf
2004, Report
Abstract not available ...
Information on habitat use of larval Ash Meadows speckled dace
R.R McShane, K.M. Swaim, G.G. Scoppettone
2004, Report
No abstract available ...
Extracting transient Rayleigh wave and its application in detecting quality of highway roadbed
J. Liu, J. Xia, Y. Luo, X. Li, S. Xu
Chen C.Xia J., editor(s)
2004, Conference Paper, Progress in Environmental and Engineering Geophysics: Proceedings of the International Conference on Environmental and Engineering Geophysics, ICEEG 2004
This paper first explains the tau-p mapping method of extracting Rayleigh waves (LR waves) from field shot gathers. It also explains a mathematical model of physical character parameters of quality of high-grade roads. This paper then discusses an algorithm of computing dispersion curves using adjacent channels. Shear velocity and physical...
Identification of larval Pacific lampreys (Lampetra tridentata), river lampreys (L. ayresi), and western brook lampreys (L. richardsoni) and thermal requirements of early life history stages of lampreys
M.H. Meeuwig, J.M. Bayer, J.G. Seelye, R.A. Reiche
2004, Report
No abstract available ...
Localization and physical property experiments conducted by opportunity at Meridiani Planum
R. E. Arvidson, R. C. Anderson, P. Bartlett, J.F. Bell III, P. R. Christensen, P. Chu, K. Davis, B.L. Ehlmann, M.P. Golombek, S. Gorevan, E.A. Guinness, A. F. C. Haldemann, Kenneth E. Herkenhoff, G. Landis, R. Li, R. Lindemann, D. W. Ming, T. Myrick, T. Parker, L. Richter, F.P. Seelos IV, Laurence A. Soderblom, S. W. Squyres, R.J. Sullivan, Jim Wilson
2004, Science (306) 1730-1733
The location of the Opportunity landing site was determined to better than 10-m absolute accuracy from analyses of radio tracking data. We determined Rover locations during traverses with an error as small as several centimeters using engineering telemetry and overlapping images. Topographic profiles generated from rover data show that the...
Canada lynx Lynx canadensis habitat and forest succession in northern Maine, USA
C.L. Hoving, D.J. Harrison, W.B. Krohn, W.J. Jakubas, M.A. McCollough
2004, Wildlife Biology (10) 285-294
The contiguous United States population of Canada lynx Lynx canadensis was listed as threatened in 2000. The long-term viability of lynx populations at the southern edge of their geographic range has been hypothesized to be dependent on old growth forests; however, lynx are a specialist predator on snowshoe hare Lepus...
Earthquake triggering at Alaskan volcanoes following the 3 November 2002 Denali fault earthquake
S.C. Moran, J.A. Power, S.D. Stihler, J.J. Sanchez, J. Caplan-Auerbach
2004, Bulletin of the Seismological Society of America (94) S300-S309
The 3 November 2002 Mw 7.9 Denali fault earthquake provided an excellent opportunity to investigate triggered earthquakes at Alaskan volcanoes. The Alaska Volcano Observatory operates short-period seismic networks on 24 historically active volcanoes in Alaska, 247-2159 km distant from the mainshock epicenter. We searched for evidence of triggered seismicity by...
The Susitna Glacier thrust fault: Characteristics of surface ruptures on the fault that initiated the 2002 Denali fault earthquake
A. J. Crone, S. F. Personius, P. A. Craw, Peter J. Haeussler, L. A. Staft
2004, Bulletin of the Seismological Society of America (94) S5-S22
The 3 November 2002 Mw 7.9 Denali fault earthquake sequence initiated on the newly discovered Susitna Glacier thrust fault and caused 48 km of surface rupture. Rupture of the Susitna Glacier fault generated scarps on ice of the Susitna and West Fork glaciers and on tundra and surficial deposits along the southern...
Illinois drainage water management demonstration project
D.J. Pitts, R. Cooke, P. J. Terrio
Cooke R.A., editor(s)
2004, Conference Paper, Proceedings of the 8th International Drainage Symposium - Drainage VIII
Due to naturally high water tables and flat topography, there are approximately 4 million ha (10 million ac) of farmland artificially drained with subsurface (tile) systems in Illinois. Subsurface drainage is practiced to insure trafficable field conditions for farm equipment and to reduce crop stress from excess water within the...
Study on geophone coupling and attenuating compensatory of low-depression velocity layer in desert area
Z. Shi, G. Tian, S. Dong, J. Xia, H. He
Chen C.Xia J., editor(s)
2004, Conference Paper, Progress in Environmental and Engineering Geophysics: Proceedings of the International Conference on Environmental and Engineering Geophysics, ICEEG 2004
In a desert area, it is difficult to couple geophones with dry sands. A low and depression velocity layer can seriously attenuate high frequency components of seismic data. Therefore, resolution and signal-to-noise (S/N) ratio of seismic data deteriorate. To enhance resolution and S/N ratio of seismic data, we designed a...
Preparation and certification of Re-Os dating reference materials: Molybdenites HLP and JDC
A. Du, S. Wu, D. Sun, Shaoming Wang, W. Qu, R. Markey, H. Stain, J. Morgan, D. Malinovskiy
2004, Geostandards and Geoanalytical Research (28) 41-52
Two Re-Os dating reference material molybdenites were prepared. Molybdenite JDC and molybdenite HLP are from a carbonate vein-type molybdenum-(lead)-uranium deposit in the Jinduicheng-Huanglongpu area of Shaanxi province, China. The samples proved to be homogeneous, based on the coefficient of variation of analytical results and an analysis of variance test. The...
40Ar/39Ar dating of the eruptive history of Mount Erebus, Antarctica: Summit flows, tephra, and caldera collapse
C.J. Harpel, P.R. Kyle, R.P. Esser, W. C. McIntosh, D.A. Caldwell
2004, Bulletin of Volcanology (66) 687-702
Eruptive activity has occurred in the summit region of Mount Erebus over the last 95 ky, and has included numerous lava flows and small explosive eruptions, at least one plinian eruption, and at least one and probably two caldera-forming events. Furnace and laser step-heating 40Ar/39Ar ages have been determined for...
Source and redox controls on metallogenic variations in intrusion-related ore systems, Tombstone-Tungsten Belt, Yukon Territory, Canada
C.J.R. Hart, J.L. Mair, R.J. Goldfarb, D.I. Groves
2004, Transactions of the Royal Society of Edinburgh, Earth Sciences (95) 339-356
The Tombstone, Mayo and Tungsten plutonic suites of granitic intrusions, collectively termed the Tombstone-Tungsten Belt, form three geographically, mineralogically, geochemically and metallogenically distinct plutonic suites. The granites (sensu lato) intruded the ancient North American continental margin of the northern Canadian Cordillera as part of a single magmatic episode in the...
Weathering controls on mechanisms of carbon storage in grassland soils
C.A. Masiello, O.A. Chadwick, J. Southon, M.S. Torn, J.W. Harden
2004, Global Biogeochemical Cycles (18) 1-9
On a sequence of soils developed under similar vegetation, temperature, and precipitation conditions, but with variations in mineralogical properties, we use organic carbon and 14C inventories to examine mineral protection of soil organic carbon. In these soils, 14C data indicate that the creation of slow-cycling carbon can be modeled as...
Comparisons of ground motions from five aftershocks of the 1999 Chi-Chi, Taiwan, earthquake with empirical predictions largely based on data from California
G.-Q. Wang, D.M. Boore, H. Igel, X.-Y. Zhou
2004, Bulletin of the Seismological Society of America (94) 2198-2212
The observed ground motions from five large aftershocks of the 1999 Chi-Chi, Taiwan, earthquake are compared with predictions from four equations based primarily on data from California. The four equations for active tectonic regions are those developed by Abrahamson and Silva (1997), Boore et al. (1997), Campbell (1997, 2001), and...
Evaluation of ultrastructure and random effects band recovery models for estimating relationships between survival and harvest rates in exploited populations
David L. Otis, Gary C. White
2004, Animal Biodiversity and Conservation (27) 157-173
Increased population survival rate after an episode of seasonal exploitation is considered a type of compensatory population response. Lack of an increase is interpreted as evidence that exploitation results in added annual mortality in the population. Despite its importance to management of exploited species, there are limited statistical techniques for...
