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Page 2005, results 50101 - 50125

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Assessing the impact of land use change on hydrology by ensemble modeling (LUCHEM). I: Model intercomparison with current land use
L. Breuer, J. A. Huisman, P. Willems, H. Bormann, A. Bronstert, B.F.W. Croke, H.-G. Frede, T. Graff, L. Hubrechts, A.J. Jakeman, G. Kite, J. Lanini, G. Leavesley, D.P. Lettenmaier, G. Lindstrom, J. Seibert, M. Sivapalan, N.R. Viney
2009, Advances in Water Resources (32) 129-146
This paper introduces the project on 'Assessing the impact of land use change on hydrology by ensemble modeling (LUCHEM)' that aims at investigating the envelope of predictions on changes in hydrological fluxes due to land use change. As part of a series of four papers, this paper outlines the motivation...
Accelerated weathering of limestone for CO2 mitigation: Opportunities for the stone and cement industries
William H. Langer, Carma A. San Juan, Greg H. Rau, Ken Caldeira
2009, Mining Engineering (61) 27-32
Large amounts of limestone fines co-produced during the processing of crushed limestone may be useful in the sequestration of carbon dioxide (CO2). Accelerated weathering of limestone (AWL) is proposed as a low-tech method to capture and sequester CO2 from fossil fuel-fired power plants and other point sources such as cement manufacturing....
Gold and trace element zonation in pyrite using a laser imaging technique: Implications for the timing of gold in orogenic and carlin-style sediment-hosted deposits
R.R. Large, L. Danyushevsky, C. Hollit, V. Maslennikov, S. Meffre, S. Gilbert, S. Bull, R. Scott, P. Emsbo, H. Thomas, B. Singh, J. Foster
2009, Economic Geology (104) 635-668
Laser ablation ICP-MS imaging of gold and other trace elements in pyrite from four different sediment- hosted gold-arsenic deposits has revealed two distinct episodes of gold enrichment in each deposit: an early synsedimentary stage where invisible gold is concentrated in arsenian diagenetic pyrite along with other trace elements, in particular,...
Accretionary orogens through Earth history
Peter A. Cawood, A. Kroner, W.J. Collins, T.M. Kusky, Walter D. Mooney, B.F. Windley
2009, Geological Society Special Publication 1-36
Accretionary orogens form at intraoceanic and continental margin convergent plate boundaries. They include the supra-subduction zone forearc, magmatic arc and back-arc components. Accretionary orogens can be grouped into retreating and advancing types, based on their kinematic framework and resulting geological character. Retreating orogens (e.g. modern western Pacific) are undergoing long-term...
Area sensitivity in North American grassland birds: Patterns and processes
C. A. Ribic, Rolf R. Koford, J.R. Herkert, Douglas H. Johnson, N.D. Niemuth, D.E. Naugle, Kristel K. Bakker, D. W. Sample, R.B. Renfrew
2009, The Auk (126) 233-244
Grassland birds have declined more than other bird groups in North America in the past 35-40 years (Vickery and Herkert 2001, Sauer et al. 2008), prompting a wide variety of research aimed at understanding these declines, as well as conservation programs trying to reverse the declines (Askins et al. 2007)....
Perfluorinated compounds and polybrominated diphenyl ethers in great blue heron eggs from Indiana Dunes National Lakeshore, Indiana
T. W. Custer, K. Kannan, L. Tao, A.R. Saxena, B. Route
2009, Journal of Great Lakes Research (35) 401-405
In 2007 archived great blue heron (Ardea herodias) eggs collected from Indiana Dunes National Lakeshore, IN, (Indiana Dunes) in 1993 were analyzed for 11 perfluorinated compounds (PFCs) and 7 polybrominated diphenyl ethers (PBDEs). Concentrations of perfluorooctane sulfonate, the major contributor to total PFC concentrations, were below the toxicity thresholds estimated...
The cali meteorite fell: A new H/L ordinary chondrite
J.M.T. Rodriguez, J. Llorca, A.E. Rubin, J. N. Grossman, D.W.G. Sears, M. Naranjo, S. Bretzius, M. Tapia, M.H.G. Sepulveda
2009, Meteoritics and Planetary Science (44) 211-220
The fall of the Cali meteorite took place on 6 July 2007 at 16 h 32 ?? 1 min local time (21 h 32 ?? 1 min UTC). A daylight fireball was witnessed by hundreds of people in the Cauca Valley in Colombia from which 10 meteorite samples with a...
Broadband records of earthquakes in deep gold mines and a comparison with results from SAFOD, California
Arthur F. McGarr, M. Boettcher, Jon Peter B. Fletcher, Russell Sell, Malcolm J. S. Johnston, R. Durrheim, S. Spottiswoode, A. Milev
2009, Bulletin of the Seismological Society of America (99) 2815-2824
For one week during September 2007, we deployed a temporary network of field recorders and accelerometers at four sites within two deep, seismically active mines. The ground-motion data, recorded at 200 samples/sec, are well suited to determining source and ground-motion parameters for the mining-induced earthquakes within and adjacent to our network....
Precise location of San Andreas Fault tremors near Cholame, California using seismometer clusters: Slip on the deep extension of the fault?
D.R. Shelly, W.L. Ellsworth, T. Ryberg, C. Haberland, G. S. Fuis, J. Murphy, R.M. Nadeau, R. Burgmann
2009, Geophysical Research Letters (36)
We examine a 24-hour period of active San Andreas Fault (SAF) tremor and show that this tremor is largely composed of repeated similar events. Utilizing this similarity, we locate the subset of the tremor with waveforms similar to an identified low frequency earthquake (LFE) "master template," located using P and...
Identifying across‐system sources of variation in a generalist freshwater fish: Correlates of total and size‐specific abundance of yellow perch
Michael P. Carey, M. E. Mather
2009, Ecology of Freshwater Fish (18) 145-155
Variation in fish abundance across systems presents a challenge to our understanding of fish populations because it limits our ability to predict and transfer basic ecological principles to applied problems. Yellow perch (Perca flavescens) is an ideal species for exploring environmental and biotic correlates across system because it is widely...
Strategic analysis for the MER Cape Verde approach
Daniel Gaines, Paolo Belluta, Jennifer Herman, Pauline Hwang, Ryan Mukai, Dan Porter, Byron Jones, Eric Wood, John P. Grotzinger, Lauren A. Edgar, Alex Hayes, Trent M. Hare, Steve W. Squyres
2009, Conference Paper, IEEE Aerospace Conference Proceedings
The Mars Exploration Rover Opportunity has recently completed a two year campaign studying Victoria Crater. The campaign culminated in a close approach of Cape Verde in order to acquire high resolution imagery of the exposed stratigraphy in the cliff face. The close approach to Cape Verde provided significant challenges for...
Scrub-shrub bird habitat associations at multiple spatial scales in beaver meadows in Massachusetts
R.B. Chandler, D.I. King, S. DeStefano
2009, The Auk (126) 186-197
Most scrub-shrub bird species are declining in the northeastern United States, and these declines are largely attributed to regional declines in habitat availability. American Beaver (Castor canadensis; hereafter “beaver”) populations have been increasing in the Northeast in recent decades, and beavers create scrub-shrub habitat through their dam-building and foraging activities....
Cahokia's boom and bust in the context of climate change
L. V. Benson, T. R. Pauketat, E.R. Cook
2009, American Antiquity (74) 467-483
During the early Mississippian Lohmann phase (A.D. 1050-1100), the American Bottom experienced a political and economic transformation. This transformation included the abrupt planned construction of central Cahokia, a large-scale influx of people to "downtown Cahokia," the abandonment of pre-Mississippian village settlements, the reorganization of farming in the Mississippi River floodplain,...
A combined telemetry - tag return approach to estimate fishing and natural mortality rates of an estuarine fish
N.M. Bacheler, J.A. Buckel, J.E. Hightower, L.M. Paramore, K. H. Pollock
2009, Canadian Journal of Fisheries and Aquatic Sciences (66) 1230-1244
A joint analysis of tag return and telemetry data should improve estimates of mortality rates for exploited fishes; however, the combined approach has thus far only been tested in terrestrial systems. We tagged subadult red drum (Sciaenops ocellatus) with conventional tags and ultrasonic transmitters over 3 years in coastal North...
Gas chromatographic–mass spectrometric fragmentation study of phytoestrogens as their trimethylsilyl derivatives: Identification in soy milk and wastewater samples
Imma Ferrar, Larry B. Barber, E. Michael Thurman
2009, Journal of Chromatography A (1216) 6024-6032
An analytical method for the identification of eight plant phytoestrogens (biochanin A, coumestrol, daidzein, equol, formononetin, glycitein, genistein and prunetin) in soy products and wastewater samples was developed using gas chromatography coupled with ion trap mass spectrometry (GC/MS–MS). The phytoestrogens were derivatized as their trimethylsilyl ethers with trimethylchlorosilane (TMCS) and...
A survey of the occurrence of Bacillus anthracis in North American soils over two long-range transects and within post-Katrina New Orleans
Dale W. Griffin, T. Petrosky, S.A. Morman, V.A. Luna
2009, Applied Geochemistry (24) 1464-1471
Soil samples were collected along a north-south transect extending from Manitoba, Canada, to the US-Mexico border near El Paso, Texas in 2004 (104 samples), a group of sites within New Orleans, Louisiana following Hurricane Katrina in 2005 (19 samples), and a Gulf Coast transect extending from Sulphur, Louisiana, to DeFuniak...
Did the Middlesboro, Kentucky, bolide impact event influence coal rank?
J.C. Hower, S.F. Greb, K.W. Kuehn, C.F. Eble
2009, International Journal of Coal Geology (79) 92-96
The Middlesboro Basin, southeastern Kentucky, occurs on the Cumberland Overthrust Sheet and includes a ca. 5.5-km diameter impact structure. The Lower and Middle Pennsylvanian coal-bearing strata are faulted, with some evidence for shock metamorphism. The event post-dated the latest-Pennsylvanian-early-Permian thrusting and was likely prior to late-Mesozoic entrenchment of drainages. The...
Gene-expression signatures of Atlantic salmon's plastic life cycle
N. Aubin-Horth, B. H. Letcher, H.A. Hofmann
2009, General and Comparative Endocrinology (163) 278-284
How genomic expression differs as a function of life history variation is largely unknown. Atlantic salmon exhibits extreme alternative life histories. We defined the gene-expression signatures of wild-caught salmon at two different life stages by comparing the brain expression profiles of mature sneaker males and immature males, and early migrants...
The influence of wellbore inflow on electromagnetic borehole flowmeter measurements
T. Clemo, W. Barrash, E.C. Reboulet, T.C. Johnson, C. Leven
2009, Ground Water (47) 515-525
This paper describes a combined field, laboratory, and numerical study of electromagnetic borehole flowmeter measurements acquired without the use of a packer or skirt to block bypass flow around the flowmeter. The most significant finding is that inflow through the wellbore screen changes the ratio of flow through the flowmeter...
Integration of MODIS-derived metrics to assess interannual variability in snowpack, lake ice, and NDVI in southwest Alaska
Bradley C. Reed, Michael E. Budde, Page Spencer, Amy E. Miller
2009, Remote Sensing of Environment (113) 1443-1452
Impacts of global climate change are expected to result in greater variation in the seasonality of snowpack, lake ice, and vegetation dynamics in southwest Alaska. All have wide-reaching physical and biological ecosystem effects in the region. We used Moderate Resolution Imaging Spectroradiometer (MODIS) calibrated radiance, snow cover extent, and vegetation...
Claritas rise, Mars: Pre-Tharsis magmatism?
J. M. Dohm, R. C. Anderson, J.-P. Williams, J. Ruiz, P.C. McGuire, D.L. Buczkowski, R. Wang, L. Scharenbroich, T.M. Hare, J.E.P. Connerney, V.R. Baker, S.J. Wheelock, J.C. Ferris, H. Miyamoto
2009, Journal of Volcanology and Geothermal Research (185) 139-156
Claritas rise is a prominent ancient (Noachian) center of tectonism identified through investigation of comprehensive paleotectonic information of the western hemisphere of Mars. This center is interpreted to be the result of magmatic-driven activity, including uplift and associated tectonism, as well as possible hydrothermal activity. Coupled with its ancient stratigraphy,...
The Lake Huron pelagic fish community: persistent spatial pattern along biomass and species composition gradients
D.M. Warner, J.S. Schaeffer, T. P. O’Brien
2009, Canadian Journal of Fisheries and Aquatic Sciences (66) 1199-1215
Spatial patterns in the biomass of pelagic fish in Lake Huron have persisted over 10 years even though biomass decreased 86% and the fish community shifted from dominance by non-native species (rainbow smelt, Osmerus mordax) to dominance by native species (bloater, Coregonus hoyi). Based on multivariate analyses of acoustic biomass...
TreeMAC: Localized TDMA MAC protocol for real-time high-data-rate sensor networks
W.-Z. Song, R. Huang, B. Shirazi, R.L. Husent
2009, Conference Paper, 7th Annual IEEE International Conference on Pervasive Computing and Communications, PerCom 2009
Earlier sensor network MAC protocols focus on energy conservation in low-duty cycle applications, while some recent applications involve real-time high-data-rate signals. This motivates us to design an innovative localized TDMA MAC protocol to achieve high throughput and low congestion in data collection sensor networks, besides energy conservation. TreeMAC divides a...
Using the Sonoran Desert test site to monitor the long-term radiometric stability of the Landsat TM/ETM+ and Terra MODIS sensors
A. Angal, X. Xiong, T. Choi, G. Chander, A. Wu
2009, Conference Paper, Proceedings of SPIE - The International Society for Optical Engineering
Pseudo-invariant ground targets have been extensively used to monitor the long-term radiometric calibration stability of remote sensing instruments. The NASA MODIS Characterization Support Team (MCST), in collaboration with members from the U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center, has previously demonstrated the use of pseudo-invariant ground...
Far field tsunami simulations of the 1755 Lisbon earthquake: Implications for tsunami hazard to the U.S. East Coast and the Caribbean
R. Barkan, Uri S. ten Brink, J. Lin
2009, Marine Geology (264) 109-122
The great Lisbon earthquake of November 1st, 1755 with an estimated moment magnitude of 8.5-9.0 was the most destructive earthquake in European history. The associated tsunami run-up was reported to have reached 5-15??m along the Portuguese and Moroccan coasts and the run-up was significant at the Azores and Madeira Island....