Measuring currents in submarine canyons: technological and scientific progress in the past 30 years
J. P. Xu
2011, Geosphere (7) 868-876
The development and application of acoustic and optical technologies and of accurate positioning systems in the past 30 years have opened new frontiers in the submarine canyon research communities. This paper reviews several key advancements in both technology and science in the field of currents in submarine canyons since the1979...
Satellite and ground observations of the June 2009 eruption of Sarychev Peak volcano, Matua Island, Central Kuriles
A. Rybin, M. Chibisova, P. Webley, T. Steensen, P. Izbekov, Christina A. Neal, V. Realmuto
2011, Bulletin of Volcanology (73) 1377-1392
After 33 years of repose, one of the most active volcanoes of the Kurile island arc—Sarychev Peak on Matua Island in the Central Kuriles—erupted violently on June 11, 2009. The eruption lasted 9 days and stands among the largest of recent historical eruptions in the Kurile Island chain. Satellite monitoring of the...
Biogeochemistry and water quality of the everglades: Symposium overview
K.R. Reddy, G.R. Best, F. Sklar
2011, Conference Paper, Critical Reviews in Environmental Science and Technology
[No abstract available]...
Depositional and diagenetic variability within the Cambrian Mount Simon Sandstone: Implications for carbon dioxide sequestration
B.B. Bowen, R.I. Ochoa, N.D. Wilkens, J. Brophy, T.R. Lovell, N. Fischietto, C.R. Medina, J.A. Rupp
2011, Environmental Geosciences (18) 69-89
The Cambrian Mount Simon Sandstone is the major target reservoir for ongoing geologic carbon dioxide (CO2) sequestration demonstrations throughout the midwest United States. The potential CO2 reservoir capacity, reactivity, and ultimate fate of injected CO2 depend on textural and compositional properties determined by depositional and diagenetic histories that vary vertically and laterally...
Global patterns of phytoplankton dynamics in coastal ecosystems
H. Paerl, Kedong Yin, J. Cloern, James E. Cloern
2011, Conference Paper, Eos
Scientific Committee on Ocean Research Working Group 137 Meeting; Hangzhou, China, 17-21 October 2010; Phytoplankton biomass and community structure have undergone dramatic changes in coastal ecosystems over the past several decades in response to climate variability and human disturbance. These changes have short- and long-term impacts on global carbon and...
Statistical methods of estimating mining costs
K. R. Long
2011, Conference Paper, SME Annual Meeting and Exhibit and CMA 113th National Western Mining Conference 2011
Until it was defunded in 1995, the U.S. Bureau of Mines maintained a Cost Estimating System (CES) for prefeasibility-type economic evaluations of mineral deposits and estimating costs at producing and non-producing mines. This system had a significant role in mineral resource assessments to estimate costs of developing and operating known...
Brittle and ductile friction and the physics of tectonic tremor
Eric G. Daub, David R. Shelly, Robert A. Guyer, P.A. Johnson
2011, Geophysical Research Letters (38) 1-4
Observations of nonvolcanic tremor provide a unique window into the mechanisms of deformation and failure in the lower crust. At increasing depths, rock deformation gradually transitions from brittle, where earthquakes occur, to ductile, with tremor occurring in the transitional region. The physics of deformation in the transition region remain poorly...
Determining the seismic source mechanism and location for an explosive eruption with limited observational data: Augustine Volcano, Alaska
P.B. Dawson, B. A. Chouet, J. Power
2011, Geophysical Research Letters (38)
Waveform inversions of the very-long-period components of the seismic wavefield produced by an explosive eruption that occurred on 11 January, 2006 at Augustine Volcano, Alaska constrain the seismic source location to near sea level beneath the summit of the volcano. The calculated moment tensors indicate the presence of a volumetric...
Gas emissions from failed and actual eruptions from Cook Inlet Volcanoes, Alaska, 1989-2006
C.A. Werner, M.P. Doukas, P.J. Kelly
2011, Bulletin of Volcanology (73) 155-173
Cook Inlet volcanoes that experienced an eruption between 1989 and 2006 had mean gas emission rates that were roughly an order of magnitude higher than at volcanoes where unrest stalled. For the six events studied, mean emission rates for eruptions were ~13,000 t/d CO2 and 5200 t/d SO2, but only...
The shakeout scenario: Meeting the needs for construction aggregates, asphalt, and concrete
W. H. Langer
2011, Earthquake Spectra (27) 505-520
An Mw 7.8 earthquake as described in the ShakeOut Scenario would cause significant damage to buildings and infrastructure. Over 6 million tons of newly mined aggregate would be used for emergency repairs and for reconstruction in the five years following the event. This aggregate would be applied mostly in the form...
Methane oxidation in a crude oil contaminated aquifer: Delineation of aerobic reactions at the plume fringes
R.T. Amos, Barbara A. Bekins, Geoffrey N. Delin, Isabelle M. Cozzarelli, D.W. Blowes, J. D. Kirshtein
2011, Journal of Contaminant Hydrology (125) 13-25
High resolution direct-push profiling over short vertical distances was used to investigate CH4 attenuation in a petroleum contaminated aquifer near Bemidji, Minnesota. The contaminant plume was delineated using dissolved gases, redox sensitive components, major ions, carbon isotope ratios in CH4 and CO2, and the presence of methanotrophic bacteria. Sharp redox gradients were observed near the...
Amphibian responses to wildfire in the western united states: Emerging patterns from short-term studies
B. R. Hossack, D. S. Pilliod
2011, Fire Ecology (7) 129-144
The increased frequency and severity of large wildfires in the western United States is an important ecological and management issue with direct relevance to amphibian conservation. Although the knowledge of fire effects on amphibians in the region is still limited relative to most other vertebrate species, we reviewed the current...
Associated terrestrial and marine fossils in the late-glacial Presumpscot Formation, southern Maine, USA, and the marine reservoir effect on radiocarbon ages
W.B. Thompson, C.B. Griggs, N.G. Miller, R.E. Nelson, T.K. Weddle, T.M. Kilian
2011, Quaternary Research (75) 552-565
Excavations in the late-glacial Presumpscot Formation at Portland, Maine, uncovered tree remains and other terrestrial organics associated with marine invertebrate shells in a landslide deposit. Buds of Populus balsamifera (balsam poplar) occurred with twigs of Picea glauca (white spruce) in the Presumpscot clay. Tree rings in Picea logs indicate that the trees all...
Cover sequences at the northern margin of the Antongil Craton, NE Madagascar
W. Bauer, G. J. Walsh, B. De Waele, Ronald J. Thomas, M. S. A. Horstwood, L. Bracciali, D. I. Schofield, U. Wollenberg, D. J. Lidke, I.T. Rasaona, M.H. Rabarimanana
2011, Precambrian Research (189) 292-312
The island of Madagascar is a collage of Precambrian, generally high-grade metamorphic basement domains, that are locally overlain by unmetamorphosed sedimentary rocks and poorly understood low-grade metasediments. In the Antalaha area of NE Madagascar, two distinct cover sequences rest on high-grade metamorphic and igneous basement rocks of the Archaean Antongil...
Use of fatty acid analysis to determine dispersal of Caspian Terns in the Columbia River Basin, U.S.A.
C. J. Maranto, J. K. Parrish, D. P. Herman, A. E. Punt, J. D. Olden, M. T. Brett, Daniel D. Roby
2011, Conservation Biology (25) 736-746
Lethal control, which has been used to reduce local abundances of animals in conflict with humans or with endangered species, may not achieve management goals if animal movement is not considered. In populations with emigration and immigration, lethal control may induce compensatory immigration, if the source of attraction remains unchanged....
Detecting aseismic strain transients from seismicity data
Andrea L. Llenos, Jeffrey J. McGuire
2011, Journal of Geophysical Research B: Solid Earth (116)
Aseismic deformation transients such as fluid flow, magma migration, and slow slip can trigger changes in seismicity rate. We present a method that can detect these seismicity rate variations and utilize these anomalies to constrain the underlying variations in stressing rate. Because ordinary aftershock sequences often obscure changes in the...
Phenology for science, resource management, decision making, and education
V.P. Nolan, J.F. Weltzin
2011, Conference Paper, Eos
Fourth USA National Phenology Network (USA-NPN) Research Coordination Network (RCN) Annual Meeting and Stakeholders Workshop; Milwaukee, Wisconsin, 21-22 September 2010; Phenology, the study of recurring plant and animal life cycle events, is rapidly emerging as a fundamental approach for understanding how ecological systems respond to environmental variation and climate change....
Strong evidence for terrestrial support of zooplankton in small lakes based on stable isotopes of carbon, nitrogen, and hydrogen
J. J. Cole, S.R. Carpenter, J. Kitchell, M. L. Pace, C.T. Solomon, Brian Weidel
2011, Proceedings of the National Academy of Sciences of the United States of America (108) 1975-1980
Cross-ecosystem subsidies to food webs can alter metabolic balances in the receiving (subsidized) system and free the food web, or particular consumers, from the energetic constraints of local primary production. Although cross-ecosystem subsidies between terrestrial and aquatic systems have been well recognized for benthic organisms in streams, rivers, and the...
Winter distribution of willow flycatcher subspecies
E. H. Paxton, P. Unitt, M. K. Sogge, M. Whitfield, P. Keim
2011, Condor (113) 608-618
Documenting how different regions across a species' breeding and nonbreeding range are linked via migratory movements is the first step in understanding how events in one region can influence events in others and is critical to identifying conservation threats throughout a migratory animal's annual cycle. We combined two studies that...
Notes on the origin of inertinite macerals in coal: Evidence for fungal and arthropod transformations of degraded macerals
J.C. Hower, J.M.K. O’Keefe, C.F. Eble, A. Raymond, B. Valentim, T.J. Volk, A.R. Richardson, Anne B. Satterwhite, R.S. Hatch, J.D. Stucker, M.A. Watt
2011, International Journal of Coal Geology (86) 231-240
The role of fungus in the formation of coal macerals, both as a primary contributor in the form of a fungus fossil/maceral funginite, and in their role in degrading wood, thus producing degraded maceral forms, has been established. Fungus, in the course of breaking down the lignin and cellulose in wood,...
Influence of changing water sources and mineral chemistry on the everglades ecosystem
Paul V. McCormick, Judson Harvey, Eric Crawford
2011, Critical Reviews in Environmental Science and Technology (41) 28-63
Human influences during the previous century increased mineral inputs to the Florida Everglades by changing the sources and chemistry of surface inflows. Biogeochemical responses to this enrichment include changes in the availability of key limiting nutrients such as P, the potential for increased turnover of nutrient pools due to accelerated...
Enhancement of long period components of recorded and synthetic ground motions using InSAR
J.A. Abell, J. Carlos de la Llera, Charles W. Wicks Jr.
2011, Soil Dynamics and Earthquake Engineering (31) 817-829
Tall buildings and flexible structures require a better characterization of long period ground motion spectra than the one provided by current seismic building codes. Motivated by that, a methodology is proposed and tested to improve recorded and synthetic ground motions which are consistent with the observed co-seismic displacement field...
Seasonal distribution of Gulf of Mexico sturgeon in the pensacola bay system, Florida
M.S. Duncan, B.M. Wrege, Frank M. Parauka, J. Jeffery Isely
2011, Journal of Applied Ichthyology (27) 316-321
Temporal and spatial distributions of Gulf of Mexico (Gulf) sturgeon Acipenser oxyrinchus desotoi were assessed in the Pensacola bay system, Florida, using stationary ultrasonic telemetry. Fifty‐eight Gulf sturgeon were tagged within the Escambia (n = 26), Yellow (n = 8), Blackwater (n = 12) and Choctawhatchee Rivers (n = 12) in June, July, September and October, 2005. Fifty‐four Gulf sturgeon...
Opportunity Mars Rover mission: Overview and selected results from Purgatory ripple to traverses to Endeavour crater
R. E. Arvidson, James W. Ashley, J.F. Bell III, M. Chojnacki, J. Cohen, T.E. Economou, W. H. Farrand, Robin L. Fergason, I. Fleischer, Paul E. Geissler, Ralf Gellert, M.P. Golombek, J.P. Grotzinger, E.A. Guinness, R.M. Haberle, Kenneth E. Herkenhoff, J.A. Herman, K.D. Iagnemma, B.L. Jolliff, J. R. Johnson, G. Klingelhofer, A.H. Knoll, A.T. Knudson, R. Li, S. M. McLennan, D. W. Mittlefehldt, R.V. Morris, T. J. Parker, M.S. Rice, C. Schroder, Laurence A. Soderblom, S. W. Squyres, R.J. Sullivan, M.J. Wolff
2011, Journal of Geophysical Research E: Planets (116)
Opportunity has been traversing the Meridiani plains since 25 January 2004 (sol 1), acquiring numerous observations of the atmosphere, soils, and rocks. This paper provides an overview of key discoveries between sols 511 and 2300, complementing earlier papers covering results from the initial phases of the mission. Key new results...
Meeting CCS communication challenges head-on: Integrating communications, planning, risk assessment, and project management
S. Greenberg, L. Gauvreau, K. Hnottavange-Telleen, R. Finley, S. Marsteller
2011, Conference Paper, Energy Procedia
The Midwest Geological Sequestration Consortium, Schlumberger Carbon Services, and Archer Daniels Midland has implemented a comprehensive communications plan at the Illinois Basin–Decatur Project (IBDP), a one million metric tonne Carbon Capture and Storage project in Decatur, IL, USA funded by the U.S. Department of Energy’s National Energy Technology Laboratory. The...
