Intensity, magnitude, location and attenuation in India for felt earthquakes since 1762
Walter Szeliga, Susan Hough, Stacey Martin, Roger G. Bilham
2010, Bulletin of the Seismological Society of America (100) 570-584
A comprehensive, consistently interpreted new catalog of felt intensities for India (Martin and Szeliga, 2010, this issue) includes intensities for 570 earthquakes; instrumental magnitudes and locations are available for 100 of these events. We use the intensity values for 29 of the instrumentally recorded events to develop new intensity versus...
A review of silver-rich mineral deposits and their metallogeny
Frederick Graybeal, Peter G. Vikre
2010, Book chapter, The challenge of finding new mineral resources: Global metallogeny, innovative exploration, and new discoveries; SEG Special Publication 15 Vol. 1
Mineral deposits with large inventories or high grades of silver are found in four genetic groups: (1) volcanogenic massive sulfide (VMS), (2) sedimentary exhalative (SEDEX), (3) lithogene, and, (4) magmatichydrothermal. Principal differences between the four groups relate to source rocks and regions, metal associations, process and timing of mineralization, and...
Serving ocean model data on the cloud
Michael Meisinger, Claudiu Farcas, Emilia Farcas, Charles Alexander, Matthew Arrott, Jeff de La Beaujardiere, Paul Hubbard, Roy Mendelssohn, Richard P. Signell
2010, Conference Paper, OCEANS 2009, MTS/IEEE Biloxi - Marine Technology for Our Future: Global and Local Challenges
The NOAA-led Integrated Ocean Observing System (IOOS) and the NSF-funded Ocean Observatories Initiative Cyberinfrastructure Project (OOI-CI) are collaborating on a prototype data delivery system for numerical model output and other gridded data using cloud computing. The strategy is to take an existing distributed system for delivering gridded data and redeploy...
Modeling methods
Richard W. Healy
2010, Book chapter, Estimating groundwater recharge
Simulation models are widely used in all types of hydrologic studies, and many of these models can be used to estimate recharge. Models can provide important insight into the functioning of hydrologic systems by identifying factors that influence recharge. The predictive capability of models can be used to evaluate how...
NetCDF-CF-OPeNDAP: Standards for ocean data interoperability and object lessons for community data standards processes
Steven C. Hankin, Jon D. Blower, Thierry Carval, Kenneth S. Casey, Craig Donlon, Olivier Lauret, Thomas Loubrieu, Ashwanth Srinivasan, Joaquin Trinanes, Oystein Godoy, Roy Mendelssohn, Richard P. Signell, Jeff de La Beaujardiere, Peter Cornillon, Frederique Blanc, Russ Rew, Jack Harlan
Julie Hall, D.E. Harrison, Detlef Stammer, editor(s)
2010, Conference Paper, Proceedings of OceanObs'09: Sustained Ocean Observations and Information for Society
It is generally recognized that meeting society's emerging environmental science and management needs will require the marine data community to provide simpler, more effective and more interoperable access to its data. There is broad agreement, as well, that data standards are the bedrock upon which interoperability will be built. The...
Using occupancy models to understand the distribution of an amphibian pathogen, Batrachochytrium dendrobatidis
M. J. Adams, Nathan Chelgren, David M. Reinitz, Rebecca A. Cole, L.J. Rachowicz, Stephanie Galvan, Brome McCreary, Christopher A. Pearl, Larissa L. Bailey, Jamie B. Bettaso, Evelyn L. Bull, Matthias Leu
2010, Ecological Applications (20) 289-302
Batrachochytrium dendrobatidis is a fungal pathogen that is receiving attention around the world for its role in amphibian declines. Study of its occurrence patterns is hampered by false negatives: the failure to detect the pathogen when it is present. Occupancy models are a useful but currently underutilized tool for analyzing...
Red-shouldered hawk nesting habitat preference in south Texas
Bradley N. Strobel, Clint W. Boal
2010, Journal of Fish and Wildlife Management (1) 33-37
We examined nesting habitat preference by red-shouldered hawks Buteo lineatus using conditional logistic regression on characteristics measured at 27 occupied nest sites and 68 unused sites in 2005–2009 in south Texas. We measured vegetation characteristics of individual trees (nest trees and unused trees) and corresponding 0.04-ha plots. We evaluated the importance of...
Coupled hydrology and biogeochemistry of Paleocene–Eocene coal beds, northern Gulf of Mexico
Jennifer C. McIntosh, Peter D. Warwick, Anna M. Martini, Stephen G. Osborn
2010, GSA Bulletin (122) 1248-1264
Thirty-six formation waters, gas, and microbial samples were collected and analyzed from natural gas and oil wells producing from the Paleocene to Eocene Wilcox Group coal beds and adjacent sandstones in north-central Louisiana, USA, to investigate the role hydrology plays on the generation and distribution of microbial methane. Major ion...
Implementing the National Integrated Ocean Observing System (IOOS): from the federal agency perspective
R. Bassett, R. Beard, W. Burnett, R. Crout, B. Griffith, R. Jensen, R. Signell
2010, Marine Technology Society Journal (44) 32-41
The national Integrated Ocean Observing System (IOOS??) is responsible for coordinating a network of people, resources, and technology to disseminate continuous data, information, models, products, and services made throughout our coastal waters, Great Lakes, and the oceans. There are many components of the IOOS-including government, academic, and private entities. This...
How vegetation and sediment transport feedbacks drive landscape change in the Everglades and wetlands worldwide
Laurel G. Larsen, Judson W. Harvey
2010, American Naturalist (176) E66-E79
Mechanisms reported to promote landscape self‐organization cannot explain vegetation patterning oriented parallel to flow. Recent catastrophic shifts in Everglades landscape pattern and ecological function highlight the need to understand the feedbacks governing these ecosystems. We modeled feedback between vegetation, hydrology, and sediment transport on the basis of a decade of...
Evaluation of aquifer heterogeneity effects on river flow loss using a transition probability framework
N.B. Engdahl, E. T. Vogler, G.S. Weissmann
2010, Water Resources Research (46)
River-aquifer exchange is considered within a transition probability framework along the Rio Grande in Albuquerque, New Mexico, to provide a stochastic estimate of aquifer heterogeneity and river loss. Six plausible hydrofacies configurations were determined using categorized drill core and wetland survey data processed through the TPROGS geostatistical package. A base...
Conservation practice establishment in two northeast Iowa watersheds: Strategies, water quality implications, and lessons learned
Philip W. Gassman, J.A. Tisl, E.A. Palas, C.L. Fields, T.M. Isenhart, K. E. Schilling, C.F. Wolter, L.S. Seigley, M.J. Helmers
2010, Journal of Soil and Water Conservation (65) 381-392
Coldwater trout streams are important natural resources in northeast Iowa. Extensive efforts have been made by state and federal agencies to protect and improve water quality in northeast Iowa streams that include Sny Magill Creek and Bloody Run Creek, which are located in Clayton County. A series of three water...
On the composition of earth's short-period seismic noise field
K.D. Koper, K. Seats, H. Benz
2010, Bulletin of the Seismological Society of America (100) 606-617
In the classic microseismic band of 5-20 sec, seismic noise consists mainly of fundamental mode Rayleigh and Love waves; however, at shorter periods seismic noise also contains a significant amount of body-wave energy and higher mode surface waves. In this study we perform a global survey of Earth's short-period seismic...
Nearshore concentration of pink shrimp (Farfantepenaeus duorarum) postlarvae in northern Florida bay in relation to nocturnal flood tide
Maria M. Criales, M. B. Robblee, Joan A. Browder, H. Cardenas, Thomas L. Jackson
2010, Bulletin of Marine Science (86) 53-74
We address the question of whether the low abundance of juvenile pink shrimp Farfantepenaeus duorarum (Burkenroad, 1939) in northern-central Florida Bay results from (i) limiting environmental conditions, (ii) a reduced postlarval transport, or (iii) both. To explore this question, postlarvae were collected during the new moon in both summer and...
Bacteria holding times for fecal coliform by mFC agar method and total coliform and Escherichia coli by Colilert®-18 Quanti-Tray® method
Brent T. Aulenbach
2010, Environmental Monitoring and Assessment (161) 147-159
Bacteria holding-time experiments of up to 62 h were performed on five surface-water samples from four urban stream sites in the vicinity of Atlanta, GA, USA that had relatively high densities of coliform bacteria (Escherichia coli densities were all well above the US Environmental Protection Agency criterion of 126 colonies...
Measurement of field-saturated hydraulic conductivity on fractured rock outcrops near Altamura (Southern Italy) with an adjustable large ring infiltrometer
Maria C. Caputo, L. de Carlo, C. Masciopinto, J. R. Nimmo
2010, Environmental Earth Sciences (60) 583-590
Up to now, field studies set up to measure field-saturated hydraulic conductivity to evaluate contamination risks, have employed small cylinders that may not be representative of the scale of measurements in heterogeneous media. In this study, a large adjustable ring infiltrometer was designed to be installed on-site directly on rock...
Federal land management, carbon sequestration, and climate change in the Southeastern U.S.: a case study with fort benning
S. Zhao, S. Liu, Z. Li, Terry L. Sohl
2010, Environmental Science & Technology (44) 992-997
Land use activities can have a major impact on the temporal trendsandspatialpatternsofregionalland-atmosphereexchange of carbon. Federal lands generally have substantially different land management strategies from surrounding areas, and the carbon consequences have rarely been quantified and assessed. Using the Fort Benning Installation as a case study, we used the General Ensemble...
Do competitors modulate rare plant response to precipitation change?
J.M. Levine, Mceachern A. Kathryn, C. Cowan
2010, Ecology (91) 130-140
Ecologists increasingly suspect that climate change will directly impact species physiology, demography, and phenology, but also indirectly affect these measures via changes to the surrounding community. Unfortunately, few studies examine both the direct and indirect pathways of impact. Doing so is important because altered competitive pressures can reduce or magnify...
Seabird bycatch in Alaska demersal longline fishery trials: a demographic summary
Elizabeth M. Phillips, HannahRose M. Nevins, Scott A. Hatch, Andrew M. Ramey, Melissa A. Miller, James T. Harvey
2010, Marine Ornithology: Journal of Seabird Research and Conservation (38) 111-117
The seasonal and spatial demographics are summarized for seabirds killed incidentally during gear modification trials for a demersal longline fishery in the Bering Sea. We examined 417 carcasses, including Northern Fulmar Fulmarus glacialis (n = 205), Glaucous-winged Gull Larus glaucescens (n = 103), Short-tailed Shearwater Puffinus tenuirostris (n = 48),...
Ecosystem effects of environmental flows: Modelling and experimental floods in a dryland river
P.B. Shafroth, A.C. Wilcox, D.A. Lytle, J.T. Hickey, D.C. Andersen, Vanessa B. Beauchamp, A. Hautzinger, L.E. McMullen, A. Warner
2010, Freshwater Biology (55) 68-85
Successful environmental flow prescriptions require an accurate understanding of the linkages among flow events, geomorphic processes and biotic responses. We describe models and results from experimental flow releases associated with an environmental flow program on the Bill Williams River (BWR), Arizona, in arid to semiarid western U.S.A. Two general approaches...
Vulnerability of deep groundwater in the Bengal Aquifer System to contamination by arsenic
W.G. Burgess, M.A. Hoque, H.A. Michael, C.I. Voss, G. N. Breit, K.M. Ahmed
2010, Nature Geoscience (3) 83-87
Shallow groundwater, the primary water source in the Bengal Basin, contains up to 100 times the World Health Organization (WHO) drinking-water guideline of 10g l 1 arsenic (As), threatening the health of 70 million people. Groundwater from a depth greater than 150m, which almost uniformly meets the WHO guideline, has...
Estimating black bear density using DNA data from hair snares
B. Gardner, J. Andrew Royle, M.T. Wegan, R.E. Rainbolt, Paul D. Curtis
2010, Journal of Wildlife Management (74) 318-325
DNA-based mark-recapture has become a methodological cornerstone of research focused on bear species. The objective of such studies is often to estimate population size; however, doing so is frequently complicated by movement of individual bears. Movement affects the probability of detection and the assumption of closure of the population required...
Population trends in northern spotted owls: Associations with climate in the Pacific Northwest
E.M. Glenn, R.G. Anthony, E.D. Forsman
2010, Biological Conservation (143) 2543-2552
We used reverse time capture-mark-recapture models to describe associations between rate of population change (??) and climate for northern spotted owls (Strix occidentalis caurina) at six long-term study areas in Washington and Oregon, USA. Populations in three of six areas showed strong evidence of declining populations, while populations in two...
Recruitment of burbot (Lota lota L.) in Lake Erie: An empirical modelling approach
M.A. Stapanian, L.D. Witzel, A. Cook
2010, Ecology of Freshwater Fish (19) 326-337
World-wide, many burbot Lota lota (L.) populations have been extirpated or are otherwise in need of conservation measures. By contrast, burbot made a dramatic recovery in Lake Erie during 1993-2001 but declined during 2002-2007, due in part to a sharp decrease in recruitment. We used Akaike's Information Criterion to evaluate...
Quantifying potential tsunami hazard in the Puysegur subduction zone, south of New Zealand
G.P. Hayes, K.P. Furlong
2010, Geophysical Journal International (183) 1512-1524
Studies of subduction zone seismogenesis and tsunami potential, particularly of large subduction zones, have recently seen a resurgence after the great 2004 earthquake and tsunami offshore of Sumatra, yet these global studies have generally neglected the tsunami potential of small subduction zones such as the Puysegur subduction zone, south of...
