The fate of diamondoids in coals and sedimentary rocks
Z. Wei, J.M. Moldowan, D.M. Jarvie, R. Hill
2006, Geology (34) 1013-1016
Diamondoids were detected in the extracts of a series of coals and rocks varying in maturity, lithology, source input, and depositional environment. At the same maturity level, diamondoids are generally about a magnitude more abundant in source rocks than in coals. The concentrations of diamondoids are maturity dependent. However, while...
Exhumation of Greater Himalayan rock along the main central thrust in Nepal: Implications for channel flow
D.M. Robinson, O.N. Pearson
Law R.D.Searle M.P.Godin L., editor(s)
2006, Conference Paper, Geological Society Special Publication
South-vergent channel flow from beneath the Tibetan Plateau may have played an important role in forming the Himalaya. The possibility that Greater Himalayan rocks currently exposed in the Himalayan Fold-Thrust Belt flowed at mid-crustal depths before being exhumed is intriguing, and may suggest a natural link between orogenic processes operating...
Evaluation of energy expenditure in adult spring Chinook salmon migrating upstream in the Columbia River Basin: an assessment based on sequential proximate analysis
M.G. Mesa, C.D. Magie
2006, River Research and Applications (22) 1085-1095
The upstream migration of adult anadromous salmonids in the Columbia River Basin (CRB) has been dramatically altered and fish may be experiencing energetically costly delays at dams. To explore this notion, we estimated the energetic costs of migration and reproduction of Yakima River-bound spring Chinook salmon Oncorhynchus tshawytscha using a...
Development and implementation of software systems for imaging spectroscopy
J.W. Boardman, R. N. Clark, A.S. Mazer, L.L. Biehl, F.A. Kruse, J. Torson, K. Staenz
2006, Conference Paper, International Geoscience and Remote Sensing Symposium (IGARSS)
Specialized software systems have played a crucial role throughout the twenty-five year course of the development of the new technology of imaging spectroscopy, or hyperspectral remote sensing. By their very nature, hyperspectral data place unique and demanding requirements on the computer software used to visualize, analyze, process and interpret them....
Interpreting map art with a perspective learned from J.M. Blaut
D. Varanka
2006, Cartographic Perspectives 15-23
Map art has been mentioned only briefly in geographic or cartographic literature, and has been analyzed almost entirely at the interpretive level. This paper attempts to define and evaluate the cartographic value of contemporary map-like art by placing the body of work as a whole in the theoretical concepts proposed...
Nesting habitat of the Tule Greater White-fronted Goose Anser albifrons elgasi
R.V. Densmore, Craig R. Ely, K.S. Bollinger, S. Kratzer, Mark S. Udevitz, D.J. Fehringer, T.C. Rothe
2006, Wildfowl (56) 37-51
This paper presents the first information on the availability and use of nesting habitat by the rare Tule Greater White-fronted Goose Anser albifrons elgasi. The breeding range was sampled by marking geese with radio transmitters on wintering and moulting areas, and tracking them to nest sites in Alaska. Nesting habitat...
Vertical variability in saturated zone hydrochemistry near Yucca Mountain, Nevada
G. L. Patterson, P.S. Striffler
2006, Conference Paper, Proceedings of the 11th International High Level Radioactive Waste Management Conference, IHLRWM
The differences in the saturated zone hydrochemistry with depth at borehole NC-EWDP-22PC reflect the addition of recharge along Fortymile Wash. The differences in water chemistry with depth at borehole NC-EWDP-19PB appear to indicate that other processes are involved. Water from the lower part of NC-EWDP-19PB possesses chemical characteristics that clearly...
Quantifying the uncertainty in site amplification modeling and its effects on site-specific seismic-hazard estimation in the upper Mississippi embayment and adjacent areas
C.H. Cramer
2006, Bulletin of the Seismological Society of America (96) 2008-2020
The Mississippi embayment, located in the central United States, and its thick deposits of sediments (over 1 km in places) have a large effect on earthquake ground motions. Several previous studies have addressed how these thick sediments might modify probabilistic seismic-hazard maps. The high seismic hazard associated with the New...
Effects of wildfire and permafrost on soil organic matter and soil climate in interior Alaska
J.W. Harden, K.L. Manies, M.R. Turetsky, J. C. Neff
2006, Global Change Biology (12) 2391-2403
The influence of discontinuous permafrost on ground-fuel storage, combustion losses, and postfire soil climates was examined after a wildfire near Delta Junction, AK in July 1999. At this site, we sampled soils from a four-way site comparison of burning (burned and unburned) and permafrost (permafrost and nonpermafrost). Soil organic layers...
On the discovery of CO nighttime emissions on Titan by Cassini/VIMS: Derived stratospheric abundances and geological implications
K. H. Baines, P. Drossart, M. A. Lopez-Valverde, S.K. Atreya, Christophe Sotin, T.W. Momary, R. H. Brown, B. J. Buratti, R. N. Clark, P. D. Nicholson
2006, Planetary and Space Science (54) 1552-1562
We present a quantitative analysis of CO thermal emissions discovered on the nightside of Titan by Baines et al. [2005. The atmospheres of Saturn and Titan in the near-infrared: First results of Cassini/VIMS. Earth, Moon, and Planets, 96, 119-147]. in Cassini/VIMS spectral imagery. We identify these emission features as the...
Health benefits of geologic materials and geologic processes
R. B. Finkelman
2006, International Journal of Environmental Research and Public Health (3) 338-342
The reemerging field of Medical Geology is concerned with the impacts of geologic materials and geologic processes on animal and human health. Most medical geology research has been focused on health problems caused by excess or deficiency of trace elements, exposure to ambient dust, and on other geologically related health...
Airport geomagnetic surveys in the United States
A. Berarducci
2006, NATO Security through Science Series C: Environmental Security 247-258
The Federal Aviation Administration (FAA) and the United States military have requirements for design, location, and construction of compass calibration pads (compass roses), these having been developed through collaboration with US Geological Survey (USGS) personnel. These requirements are detailed in the FAA Advisory Circular AC 150/5300-13, Appendix 4, and in...
Relations between climatic variability and hydrologic time series from four alluvial basins across the southwestern United States
R. T. Hanson, M. D. Dettinger, M.W. Newhouse
2006, Hydrogeology Journal (14) 1122-1146
Hydrologic time series of groundwater levels, streamflow, precipitation, and tree-ring indices from four alluvial basins in the southwestern United States were spectrally analyzed, and then frequency components were reconstructed to isolate variability due to climatic variations on four time scales. Reconstructed components (RCs), from each time series, were compared to...
Virulence comparisons of infectious hematopoietic necrosis virus U and M genogroups in sockeye salmon and rainbow trout
K.A. Garver, W.N. Batts, Gael Kurath
2006, Journal of Aquatic Animal Health (18) 232-243
Infectious hematopoietic necrosis virus (IHNV) is an aquatic rhabdovirus that infects salmonids in the Pacific Northwest of the United States, Europe, and Asia. Isolates of IHNV have been phylogenetically classified into three major viral genogroups, designated U, M, and L. To characterize virulence of IHNV in the context of these...
Sensor web enables rapid response to volcanic activity
Ashley G. Davies, Steve Chien, Robert Wright, Asta Mikijus, Philip R. Kyle, Matt Welsh, Jeffrey B. Johnson, Daniel Tran, Steven R. Schaffer, Robert Sherwood
2006, Eos, Transactions, American Geophysical Union (87) 2-4
Rapid response to the onset of volcanic activity allows for the early assessment of hazard and risk [Tilling, 1989]. Data from remote volcanoes and volcanoes in countries with poor communication infrastructure can only be obtained via remote sensing [Harris et al., 2000]. By linking notifications of activity from ground-based and...
Rupture propagation of the 2004 Parkfield, California, earthquake from observations at the UPSAR
Joe B. Fletcher, P. Spudich, L.M. Baker
2006, Bulletin of the Seismological Society of America (96)
Using a short-baseline seismic array (U.S. Geological Survey Parkfield Dense Seismograph Array [UPSAR]) about 12 km west of the rupture initiation of the 28 September 2004 M 6.0 Parkfield, California, earthquake, we have observed the movement of the rupture front of this earthquake on the San Andreas fault. The sources...
Continuous borehole strain and pore pressure in the near field of the 28 September 2004 M 6.0 Parkfield, California, earthquake: Implications for nucleation, fault response, earthquake prediction and tremor
M.J.S. Johnston, R. D. Borcherdt, A. T. Linde, M. T. Gladwin
2006, Bulletin of the Seismological Society of America (96) S56-S72
Near-field observations of high-precision borehole strain and pore pressure, show no indication of coherent accelerating strain or pore pressure during the weeks to seconds before the 28 September 2004 M 6.0 Parkfield earthquake. Minor changes in strain rate did occur at a few sites during the last 24 hr before the earthquake...
The impact of boreal forest fire on climate warming
J. T. Randerson, H. Liu, M.G. Flanner, S.D. Chambers, Y. Jin, P.G. Hess, G. Pfister, M.C. Mack, K.K. Treseder, L.R. Welp, F.S. Chapin, J.W. Harden, M. L. Goulden, E. Lyons, J. C. Neff, E.A.G. Schuur, C.S. Zender
2006, Science (314) 1130-1132
We report measurements and analysis of a boreal forest fire, integrating the effects of greenhouse gases, aerosols, black carbon deposition on snow and sea ice, and postfire changes in surface albedo. The net effect of all agents was to increase radiative forcing during the first year (34 ?? 31 Watts...
Prevalence of Microsporidia, Cryptosporidium spp., and Giardia spp. in beavers (Castor canadensis) in Massachusetts
R. Fayer, M. Santin, J.M. Trout, S. DeStefano, K. Koenen, T. Kaur
2006, Journal of Zoo and Wildlife Medicine (37) 492-497
Feces from 62 beavers (Castor canadensis) in Massachusetts were examined by fluorescence microscopy (IFA) and polymerase chain reaction (PCR) for Microsporidia species, Cryptosporidium spp., and Giardia spp. between January 2002 and December 2004. PCR-positive specimens were further examined by gene sequencing. Protist parasites were detected in 6.4% of the beavers....
Wave energy dissipation by intertidal sand waves on a mixed-sediment Beach
P. Adams, P. Ruggiero
2006, Conference Paper, Coastal Dynamics 2005 - Proceedings of the Fifth Coastal Dynamics International Conference
Within the surf zone, the energy expended by wave breaking is strongly influenced by nearshore bathymetry, which is often linked to the character and abundance of local sediments. Based upon a continuous, two year record of Argus Beach Monitoring System (ABMS) data on the north shore of Kachemak Bay in...
Predicting tree species presence and basal area in Utah: A comparison of stochastic gradient boosting, generalized additive models, and tree-based methods
Gretchen G. Moisen, E.A. Freeman, J.A. Blackard, T.S. Frescino, N.E. Zimmermann, T.C. Edwards Jr.
2006, Ecological Modelling (199) 176-187
Many efforts are underway to produce broad-scale forest attribute maps by modelling forest class and structure variables collected in forest inventories as functions of satellite-based and biophysical information. Typically, variants of classification and regression trees implemented in Rulequest's?? See5 and Cubist (for binary and continuous responses, respectively) are the tools...
Research on genesis of pyrite near the Permian-Triassic boundary in meishan, Zhejiang, China
Y.-F. Jiang, Y.-G. Tang, C. L. Chou
2006, Journal of China University of Mining and Technology (16) 457-460
The content and crystal forms of pyrite and sulfur isotope composition of pyrite sulfur as well as its vertical distribution near the Permian-Triassic (P/T) boundary in the Meishan section, Changxing county, Zhejiang province, China were studied using geological, petrological, mineralogical and geochemical methods (techniques). The result showed that the genesis...
A simple method of predicting S-wave velocity
Myung W. Lee
2006, Geophysics (71)
Prediction of shear-wave velocity plays an important role in seismic modeling, amplitude analysis with offset, and other exploration applications. This paper presents a method for predicting S-wave velocity from the P-wave velocity on the basis of the moduli of dry rock. Elastic velocities of water-saturated sediments at low frequencies can...
Soluble reactive phosphorus transport and retention in tropical, rainforest streams draining a volcanic and geothermally active landscape in Costa Rica.: Long-term concentration patterns, pore water environment and response to ENSO events
F.J. Triska, C. M. Pringle, J.H. Duff, R.J. Avanzino, A. Ramirez, M. Ardon, A. P. Jackman
2006, Biogeochemistry (81) 131-143
Soluble reactive phosphorus (SRP) transport/retention was determined at four sites in three rainforest streams draining La Selva Biological Station, Costa Rica. La Selva is located at the base of the last remaining intact rainforest transect from 30 m above sea level to 3000 m along the entire Caribbean slope of...
Using a rapid method to predict recreational water quality at Cuyahoga Valley National Park, Ohio
R.N. Bushon, A.M.G. Brady, M.B. Plona
2006, Park Science (24) 89-93
Scientists research a quick, affordable, and accurate way to estimate E. coli concentrations in water using a new and potentially useful one-hour technique....
