Subevents of long-period seismicity: implications for hydrothermal dynamics during the 2004-2008 eruption of Mount St. Helens
Robin S. Matoza, Bernard A. Chouet
2010, Journal of Geophysical Research (115)
One of the most striking aspects of seismicity during the 2004–2008 eruption of Mount St. Helens (MSH) was the precise regularity in occurrence of repetitive long-period (LP) or “drumbeat” events over sustained time periods. However, this precise regularity was not always observed, and at times the temporal occurrence of LP...
Iceberg calving as a primary source of regional‐scale glacier‐generated seismicity in the St. Elias Mountains, Alaska
Shad O'Neel, Christopher F. Larsen, Natalia Rupert, Roger Hansen
2010, Journal of Geophysical Research F: Earth Surface (115)
Since the installation of the Alaska Regional Seismic Network in the 1970s, data analysts have noted nontectonic seismic events thought to be related to glacier dynamics. While loose associations with the glaciers of the St. Elias Mountains have been made, no detailed study of the source locations has been undertaken....
Relative vulnerability of public supply wells to VOC contamination in hydrologically distinct regional aquifers
Leon J. Kauffman, Francis H. Chapelle
2010, Ground Water Monitoring and Remediation (30) 54-63
A process-based methodology was used to compare the vulnerability of public supply wells tapping seven study areas in four hydrologically distinct regional aquifers to volatile organic compound (VOC) contamination. This method considers (1) contributing areas and travel times of groundwater flowpaths converging at individual supply wells, (2) the oxic and/or...
Carbon dioxide on the satellites of Saturn: Results from the Cassini VIMS investigation and revisions to the VIMS wavelength scale
D. P. Cruikshank, A.W. Meyer, R. H. Brown, R. N. Clark, R. Jaumann, K. Stephan, C. A. Hibbitts, S.A. Sandford, R.M.E. Mastrapa, G. Filacchione, C.M.D. Ore, P. D. Nicholson, B. J. Buratti, T. B. McCord, R.M. Nelson, J.B. Dalton, K. H. Baines, D. L. Matson
2010, Icarus (206) 561-572
Several of the icy satellites of Saturn show the spectroscopic signature of the asymmetric stretching mode of C-O in carbon dioxide (CO2) at or near the nominal solid-phase laboratory wavelength of 4.2675 ??m (2343.3 cm-1), discovered with the Visible-Infrared Mapping Spectrometer (VIMS) on the Cassini spacecraft. We report here on...
Sediment contamination of residential streams in the metropolitan Kansas City area, USA: Part II. whole-sediment toxicity to the amphipod hyalella azteca
J. Tao, Christopher G. Ingersoll, Nile E. Kemble, J.R. Dias, J.B. Murowchick, G. Welker, D. Huggins
2010, Archives of Environmental Contamination and Toxicology (59) 370-381
This is the second part of a study that evaluates the influence of nonpoint sources on the sediment quality of five adjacent streams within the metropolitan Kansas City area, central United States. Physical, chemical, and toxicity data (Hyalella azteca 28-day whole-sediment toxicity test) for 29 samples collected in 2003 were...
Variations in coal characteristics and their possible implications for CO2 sequestration: Tanquary injection site, southeastern Illinois, USA
D.G. Morse, Maria Mastalerz, A. Drobniak, J.A. Rupp, S. Harpalani
2010, International Journal of Coal Geology (84) 25-38
As part of the U.S. Department of Energy's Regional Sequestration Partnership program, the potential for sequestering CO2 in the largest bituminous coal reserve in United States - the Illinois Basin - is being assessed at the Tanquary site in Wabash County, southeastern Illinois. To accomplish the main project objectives, which...
Generation and emplacement of fine-grained ejecta in planetary impacts
R.R. Ghent, V. Gupta, B.A. Campbell, S.A. Ferguson, J.C.W. Brown, R.L. Fergason, L.M. Carter
2010, Icarus (209) 818-835
We report here on a survey of distal fine-grained ejecta deposits on the Moon, Mars, and Venus. On all three planets, fine-grained ejecta form circular haloes that extend beyond the continuous ejecta and other types of distal deposits such as run-out lobes or ramparts. Using Earth-based radar images, we find...
Aquifer geochemistry at potential aquifer storage and recovery sites in coastal plain aquifers in the New York city area, USA
C. J. Brown, P.E. Misut
2010, Applied Geochemistry (25) 1431-1452
The effects of injecting oxic water from the New York city (NYC) drinking-water supply and distribution system into a nearby anoxic coastal plain aquifer for later recovery during periods of water shortage (aquifer storage and recovery, or ASR) were simulated by a 3-dimensional, reactive-solute transport model. The Cretaceous aquifer system...
Greenhouse gas mitigation can reduce sea-ice loss and increase polar bear persistence
Steven C. Amstrup, E.T. Deweaver, David C. Douglas, B.G. Marcot, George M. Durner, C.M. Bitz, D.A. Bailey
2010, Nature (468) 955-958
On the basis of projected losses of their essential sea-ice habitats, a United States Geological Survey research team concluded in 2007 that two-thirds of the worlds polar bears (Ursus maritimus) could disappear by mid-century if business-as-usual greenhouse gas emissions continue. That projection, however, did not consider the possible benefits of...
Structural features of a bituminous coal and their changes during low-temperature oxidation and loss of volatiles investigated by advanced solid-state NMR spectroscopy
J.-D. Mao, A. Schimmelmann, Maria Mastalerz, Patrick G. Hatcher, Y. Li
2010, Conference Paper, Energy and Fuels
Quantitative and advanced 13C solid-state NMR techniques were employed to investigate (i) the chemical structure of a high volatile bituminous coal, as well as (ii) chemical structural changes of this coal after evacuation of adsorbed gases, (iii) during oxidative air exposure at room temperature, and (iv) after oxidative heating in...
Late Hesperian plains formation and degradation in a low sedimentation zone of the northern lowlands of Mars
J.A.P. Rodriguez, K. L. Tanaka, D.C. Berman, J.S. Kargel
2010, Icarus (210) 116-134
The plains materials that form the martian northern lowlands suggest large-scale sedimentation in this part of the planet. The general view is that these sedimentary materials were transported from zones of highland erosion via outflow channels and other fluvial systems. The study region, the northern circum-polar plains south of Gemini...
Fall may be imminent for Kansas Cherokee basin coalbed gas output
K. David Newell
2010, Oil & Gas Journal (108) 33-40
Natural gas production in the Kansas portion of the Cherokee basin, Southeastern Kansas, for 2008 was 49.1 bcf. The great majority of Cherokee basin gas production is now coal-bed methane (CBM). The major producers are Quest Energy LLC, Dart Cherokee Basin Operating Co. LLC, and Layne Energy Operating LLC. Most...
Vadose zone attenuation of organic compounds at a crude oil spill site - Interactions between biogeochemical reactions and multicomponent gas transport
S. Molins, K.U. Mayer, R.T. Amos, Barbara A. Bekins
2010, Journal of Contaminant Hydrology (112) 15-29
Contaminant attenuation processes in the vadose zone of a crude oil spill site near Bemidji, MN have been simulated with a reactive transport model that includes multicomponent gas transport, solute transport, and the most relevant biogeochemical reactions. Dissolution and volatilization of oil components, their aerobic and anaerobic degradation coupled with...
Diviner lunar radiometer observations of cold traps in the moon's south polar region
D. A. Paige, M.A. Siegler, J.A. Zhang, P.O. Hayne, E.J. Foote, K.A. Bennett, A.R. Vasavada, B. T. Greenhagen, J. T. Schofield, D. J. McCleese, M. C. Foote, E. DeJong, B.G. Bills, W. Hartford, B. C. Murray, C. C. Allen, K. Snook, L. A. Soderblom, S. Calcutt, F. W. Taylor, N. E. Bowles, J. L. Bandfield, R. Elphic, R. Ghent, T.D. Glotch, M.B. Wyatt, P. G. Lucey
2010, Science (330) 479-482
Diviner Lunar Radiometer Experiment surface-temperature maps reveal the existence of widespread surface and near-surface cryogenic regions that extend beyond the boundaries of persistent shadow. The Lunar Crater Observation and Sensing Satellite (LCROSS) struck one of the coldest of these regions, where subsurface temperatures are estimated to be 38 kelvin. Large...
In situ measurements of volatile aromatic hydrocarbon biodegradation rates in groundwater
I.M. Cozzarelli, B.A. Bekins, R.P. Eganhouse, E. Warren, H.I. Essaid
2010, Journal of Contaminant Hydrology (111) 48-64
Benzene and alkylbenzene biodegradation rates and patterns were measured using an in situ microcosm in a crude-oil contaminated aquifer near Bemidji, Minnesota. Benzene-D6, toluene, ethylbenzene, o-, m- and p-xylenes and four pairs of C3- and C4-benzenes were added to an in situ microcosm and studied over a 3-year period. The...
Geologic controls on thermal maturity patterns in Pennsylvanian coal-bearing rocks in the Appalachian basin
Leslie F. Ruppert, James C. Hower, Robert T. Ryder, Jeffrey R. Levine, Michael H. Trippi, William C. Grady
2010, International Journal of Coal Geology (81) 169-181
Thermal maturation patterns of Pennsylvanian strata in the Appalachian basin were determined by compiling and contouring published and unpublished vitrinite reflectance (VR) measurements. VR isograd values range from 0.6% in eastern Ohio and eastern Kentucky (western side of the East Kentucky coal field) to greater than 5.5% in eastern Pennsylvania (Southern Anthracite field,...
The Lunar Reconnaissance Orbiter Diviner Lunar Radiometer Experiment
D. A. Paige, M. C. Foote, B. T. Greenhagen, J. T. Schofield, S. Calcutt, A. R. Vasavada, D. J. Preston, F. W. Taylor, C. C. Allen, K. Snook, B. M. Jakosky, B. C. Murray, Laurence A. Soderblom, B. Jau, S. Loring, J. Bulharowski, N. E. Bowles, I. R. Thomas, M. T. Sullivan, C. Avis, E. M. De Jong, W. Hartford, D. J. McCleese
2010, Space Science Reviews (150) 125-160
The Diviner Lunar Radiometer Experiment on NASA’s Lunar Reconnaissance Orbiter will be the first instrument to systematically map the global thermal state of the Moon and its diurnal and seasonal variability. Diviner will measure reflected solar and emitted infrared radiation in nine spectral channels with wavelengths ranging from 0.3 to...
Improved constraints on the estimated size and volatile content of the Mount St. Helens magma system from the 2004–2008 history of dome growth and deformation
Larry G. Mastin, Mike Lisowski, Evelyn Roeloffs, Nick Beeler
2009, Geophysical Research Letters (36) 1-4
The history of dome growth and geodetic deflation during the 2004–2008 Mount St. Helens eruption can be fit to theoretical curves with parameters such as reservoir volume, bubble content, initial overpressure, and magma rheology, here assumed to be Newtonian viscous, with or without a solid plug in the conduit center....
Continuous and discrete water-quality data collected at five sites on Lake Houston near Houston, Texas, 2006-08
Amy M. Beussink, Michael R. Burnich
2009, Data Series 485
Lake Houston, a reservoir impounded in 1954 by the City of Houston, Texas, is a primary source of drinking water for Houston and surrounding areas. The U.S. Geological Survey, in cooperation with the City of Houston, developed a continuous water-quality monitoring network to track daily changes in water quality in...
Design and Performance of an Enhanced Bioremediation Pilot Test in a Tidal Wetland Seep, West Branch Canal Creek, Aberdeen Proving Ground, Maryland
Emily H. Majcher, Michelle M. Lorah, Daniel J. Phelan, Angela L. McGinty
2009, Scientific Investigations Report 2009-5112
Because of a lack of available in situ remediation methods for sensitive wetland environments where contaminated groundwater discharges, the U.S. Geological Survey, in cooperation with the U.S. Army Garrison, Aberdeen Proving Ground, Maryland, conceived, designed, and pilot tested a permeable reactive mat that can be placed horizontally at the groundwater/surface-water...
Groundwater Quality in Central New York, 2007
David A.V. Eckhardt, J.E. Reddy, Stephen B. Shaw
2009, Open-File Report 2009-1257
Water samples were collected from 7 production wells and 28 private residential wells in central New York from August through December 2007 and analyzed to characterize the chemical quality of groundwater. Seventeen wells are screened in sand and gravel aquifers, and 18 are finished in bedrock aquifers. The wells were...
Aquifer chemistry and transport processes in the zone of contribution to a public-supply well in Woodbury, Connecticut, 2002-06
Craig J. Brown, J. Jeffrey Starn, Kenneth G. Stollenwerk, Remo A. Mondazzi, Thomas J. Trombley
2009, Scientific Investigations Report 2009-5051
A glacial aquifer system in Woodbury, Connecticut, was studied to identify factors that affect the groundwater quality in the zone of contribution to a community public-supply well. Water samples were collected during 2002-06 from the public-supply well and from 35 monitoring wells in glacial stratified deposits, glacial till, and fractured...
Groundwater-quality data in the Antelope Valley study unit, 2008: Results from the California GAMA Program
Stephen J. Schmitt, Barbara J. Milby Dawson, Kenneth Belitz
2009, Data Series 479
Groundwater quality in the approximately 1,600 square-mile Antelope Valley study unit (ANT) was investigated from January to April 2008 as part of the Priority Basin Project of the Groundwater Ambient Monitoring and Assessment (GAMA) Program. The GAMA Priority Basin Project was developed in response to the Groundwater Quality Monitoring Act...
Occurrence of volatile organic compounds in selected urban streams in the United States, 1995-2003
David A. Bender, Gregory C. Delzer, Curtis V. Price, John S. Zogorski
2009, Scientific Investigations Report 2009-5203
As part of the U.S. Geological Survey's (USGS) National Water-Quality Assessment (NAWQA) Program, urban indicator sites were monitored to (1) characterize the stream quality from drainage basins with predominantly residential and commercial land use, and (2) determine which selected natural and anthropogenic factors affect stream quality. A total of 869...
Groundwater quality data for the northern Sacramento Valley, 2007: Results from the California GAMA Program
Peter A. Bennett, George L. Bennett V, Kenneth Belitz
2009, Data Series 452
Groundwater quality in the approximately 1,180-square-mile Northern Sacramento Valley study unit (REDSAC) was investigated in October 2007 through January 2008 as part of the Priority Basin Project of the Groundwater Ambient Monitoring and Assessment (GAMA) Program. The GAMA Priority Basin Project was developed in response to the Groundwater Quality Monitoring...