U.S. DOE methodology for the development of geologic storage potential for carbon dioxide at the national and regional scale
Angela Goodman, J. Alexandra Hakala, Grant Bromhal, Dawn Deel, Traci Rodosta, Scott Frailey, Michael Small, Doug Allen, Vyacheslav Romanov, Jim Fazio, Nicolas Huerta, Dustin McIntyre, Barbara Kutchko, George Guthrie
2011, International Journal of Greenhouse Gas Control (5) 952-965
A detailed description of the United States Department of Energy (US-DOE) methodology for estimating CO2 storage potential for oil and gas reservoirs, saline formations, and unmineable coal seams is provided. The oil and gas reservoirs are assessed at the field level, while saline formations and unmineable coal seams are assessed...
Unique geologic insights from "non-unique" gravity and magnetic interpretation
R. W. Saltus, R.J. Blakely
2011, GSA Today (21) 4-11
Interpretation of gravity and magnetic anomalies is mathematically non-unique because multiple theoretical solutions are always possible. The rigorous mathematical label of "nonuniqueness" can lead to the erroneous impression that no single interpretation is better in a geologic sense than any other. The purpose of this article is to present a...
Diel activity of Gulf of Mexico sturgeon in a northwest Florida bay
B.M. Wrege, M.S. Duncan, J. Jeffery Isely
2011, Journal of Applied Ichthyology (27) 322-326
In this paper, we assess patterns in activity of Gulf of Mexico sturgeon Acipenser oxyrinchus desotoi over a 24-h period in the Pensacola bay system, Florida. Although seasonal migration of sturgeon is well documented, little information is available pertaining to daily variation in activity. We surgically implanted 58 Gulf sturgeon...
Trends in pesticide concentrations in streams of the western United States, 1993-2005
Henry M. Johnson, Joseph L. Domagalski, Dina Saleh
2011, Journal of the American Water Resources Association (47) 265-286
Trends in pesticide concentrations for 15 streams in California, Oregon, Washington, and Idaho were determined for the organophosphate insecticides chlorpyrifos and diazinon and the herbicides atrazine, s‐ethyl diproplythiocarbamate (EPTC), metolachlor, simazine, and trifluralin. A parametric regression model was used to account for flow, seasonality, and antecedent hydrologic conditions and thereby...
Dirhinus texanus (Hymenoptera: Chalcididae) from Utah
L.L. Pech, M.W. Gates, T. B. Graham
2011, Southwestern Naturalist (56) 275-276
We collected a Dirhinus texanus (Hymenoptera: Chalcididae) in Salt Creek Canyon, Canyonlands National Park, San Juan County, Utah. This is the first record for D. texanus in Utah. ...
An 1800-yr record of decadal-scale hydroclimatic variability in the upper Arkansas River basin from bristlecone pine
C.A. Woodhouse, G.T. Pederson, S.T. Gray
2011, Quaternary Research (75) 483-490
Bristlecone pine trees are exceptionally long-lived, and with the incorporation of remnant material have been used to construct multi-millennial length ring-width chronologies. These chronologies can provide valuable information about past temperature and moisture variability. In this study, we outline a method to build a moisture-sensitive bristlecone chronology and assess the...
Evidence of volcanic and glacial activity in Chryse and Acidalia Planitiae, Mars
Sara Martinez-Alonso, Michael T. Mellon, Maria E. Banks, Laszlo P. Keszthelyi, Alfred S. McEwen
2011, Icarus (212) 597-621
Chryse and Acidalia Planitiae show numerous examples of enigmatic landforms previously interpreted to have been influenced by a water/ice-rich geologic history. These landforms include giant polygons bounded by kilometer-scale arcuate troughs, bright pitted mounds, and mesa-like features. To investigate the significance of the last we have analyzed in detail the...
Kin encounter rate and inbreeding avoidance in canids
E. Geffen, M. Kam, R. Hefner, P. Hersteinsson, A. Angerbjorn, L. Dalen, E. Fuglei, K. Noren, J.R. Adams, J. Vucetich, T.J. Meier, L.D. Mech, B.M. Vonholdt, D.R. Stahler, R.K. Wayne
2011, Molecular Ecology (20) 5348-5358
Mating with close kin can lead to inbreeding depression through the expression of recessive deleterious alleles and loss of heterozygosity. Mate selection may be affected by kin encounter rate, and inbreeding avoidance may not be uniform but associated with age and social system. Specifically, selection for kin recognition and inbreeding...
Segregating gas from melt: an experimental study of the Ostwald ripening of vapor bubbles in magmas
Nicole C. Lautze, Thomas W. Sisson, Margaret T. Mangan, Timothy L. Grove
2011, Contributions to Mineralogy and Petrology (161) 331-347
Diffusive coarsening (Ostwald ripening) of H2O and H2O-CO2 bubbles in rhyolite and basaltic andesite melts was studied with elevated temperature–pressure experiments to investigate the rates and time spans over which vapor bubbles may enlarge and attain sufficient buoyancy to segregate in magmatic systems. Bubble growth and segregation are also considered...
GSD-1G and MPI-DING Reference Glasses for In Situ and Bulk Isotopic Determination
K.P. Jochum, S. A. Wilson, W. Abouchami, M. Amini, J. Chmeleff, A. Eisenhauer, E. Hegner, L.M. Iaccheri, B. Kieffer, J. Krause, W.F. McDonough, R. Mertz-Kraus, I. Raczek, R.L. Rudnick, Donna K. Scholz, G. Steinhoefel, B. Stoll, A. Stracke, S. Tonarini, D. Weis, U. Weis, J.D. Woodhead
2011, Geostandards and Geoanalytical Research (35) 193-226
This paper contains the results of an extensive isotopic study of United States Geological Survey GSD-1G and MPI-DING reference glasses. Thirteen different laboratories were involved using high-precision bulk (TIMS, MC-ICP-MS) and microanalytical (LA-MC-ICP-MS, LA-ICP-MS) techniques. Detailed studies were performed to demonstrate the large-scale and small-scale homogeneity of the reference glasses....
Monitoring direct and indirect climate effects on whitebark pine ecosystems at Crater Lake National park
S.B. Smith, D.C. Odion, D.A. Sarr, K.M. Irvine
2011, Park Science (28)
Whitebark pine (Pinus albicaulis) is the distinctive, often stunted, and picturesque tree line species in the American West. As a result of climate change, mountain pine beetles (Dendroctonus ponderosae) have moved up in elevation, adding to nonnative blister rust (Cronartium ribicola) disease as a major cause of mortality in whitebark...
Sexing young snowy owls
Mathew T. Seidensticker, Denver W. Holt, Jennifer Detienne, Sandra L. Talbot, Kathy Gray
2011, Journal of Raptor Research (45) 281-289
We predicted sex of 140 Snowy Owl (Bubo scandiacus) nestlings out of 34 nests at our Barrow, Alaska, study area to develop a technique for sexing these owls in the field. We primarily sexed young, flightless owls (3844 d old) by quantifying plumage markings on the remiges and tail, predicting...
Incorporating biodiversity into rangeland health: Plant species richness and diversity in great plains grasslands
Amy J. Symstad, Jayne L. Jonas
2011, Rangeland Ecology and Management (64) 555-572
Indicators of rangeland health generally do not include a measure of biodiversity. Increasing attention to maintaining biodiversity in rangelands suggests that this omission should be reconsidered, and plant species richness and diversity are two metrics that may be useful and appropriate. Ideally, their response to a variety of anthropogenic and...
Late Early Permian continental ichnofauna from Lake Kemp, north-central Texas, USA
S. G. Lucas, S. Voigt, A.J. Lerner, W.J. Nelson
2011, Palaeogeography, Palaeoclimatology, Palaeoecology (308) 395-404
Continental trace fossils of Early Permian age are well known in the western United States from Wolfcampian (~ Asselian to Artinskian) strata, but few examples are known from Leonardian (~ Kungurian) deposits. A substantial ichnofauna from strata of the lower part of the Clear Fork Formation at Lake Kemp, Baylor...
USGS 1-min Dst index
J.L. Gannon, Jeffrey J. Love
2011, Journal of Atmospheric and Solar-Terrestrial Physics (73) 323-334
We produce a 1-min time resolution storm-time disturbance index, the USGS Dst, called Dst8507-4SM. This index is based on minute resolution horizontal magnetic field intensity from low-latitude observatories in Honolulu, Kakioka, San Juan and Hermanus, for the years 1985–2007. The method used to produce the index uses a combination of time-...
Efficacy of monitoring and empirical predictive modeling at improving public health protection at Chicago beaches
Meredith B. Nevers, Richard L. Whitman
2011, Water Research (45) 1659-1668
Efforts to improve public health protection in recreational swimming waters have focused on obtaining real-time estimates of water quality. Current monitoring techniques rely on the time-intensive culturing of fecal indicator bacteria (FIB) from water samples, but rapidly changing FIB concentrations result in management errors that lead to the public being...
Regional spectral analysis of three moderate earthquakes in Northeastern North America
John Boatwright, Linda C. Seekins
2011, Bulletin of the Seismological Society of America (101) 1769-1782
We analyze Fourier spectra obtained from the horizontal components of broadband and accelerogram data from the 1997 Cap-Rouge, the 2002 Ausable Forks, and the 2005 Rivière-du-Loup earthquakes, recorded by Canadian and American stations sited on rock at hypocentral distances from 23 to 602 km. We check the recorded spectra closely...
Direction of unsaturated flow in a homogeneous and isotropic hillslope
N. Lu, B.S. Kaya, J. W. Godt
2011, Water Resources Research (47)
The distribution of soil moisture in a homogeneous and isotropic hillslope is a transient, variably saturated physical process controlled by rainfall characteristics, hillslope geometry, and the hydrological properties of the hillslope materials. The major driving mechanisms for moisture movement are gravity and gradients in matric potential. The latter is solely...
Earthquake impact scale
David J. Wald, K. S. Jaiswal, K. D. Marano, D. Bausch
2011, Natural Hazards Review (12) 125-139
With the advent of the USGS prompt assessment of global earthquakes for response (PAGER) system, which rapidly assesses earthquake impacts, U.S. and international earthquake responders are reconsidering their automatic alert and activation levels and response procedures. To help facilitate rapid and appropriate earthquake response, an Earthquake Impact...
Documenting channel features associated with gas hydrates in the Krishna-Godavari Basin, offshore India
M. Riedel, Timothy S. Collett, Ude Shankar
2011, Marine Geology (279) 1-11
During the India National Gas Hydrate Program (NGHP) Expedition 01 in 2006 significant sand and gas hydrate were recovered at Site NGHP-01-15 within the Krishna–Godavari Basin, East Coast off India. At the drill site NGHP-01-15, a 5–8 m thick interval was found that is characterized by higher sand content than anywhere...
Magmatic-vapor expansion and the formation of high-sulfidation gold deposits: Structural controls on hydrothermal alteration and ore mineralization
Byron R. Berger, Richard W. Henley
2011, Ore Geology Reviews (39) 75-90
High-sulfidation copper–gold lode deposits such as Chinkuashih, Taiwan, Lepanto, Philippines, and Goldfield, Nevada, formed within 1500 m of the paleosurface in volcanic terranes. All underwent an early stage of extensive advanced argillic silica–alunite alteration followed by an abrupt change to spatially much more restricted stages of fracture-controlled sulfide–sulfosalt mineral assemblages...
Positive feedback and momentum growth during debris-flow entrainment of wet bed sediment
Richard M. Iverson, Mark E. Reid, Matthew Logan, Richard G. Lahusen, Jonathan W. Godt, Julia P. Griswold
2011, Nature Geoscience (4) 116-121
Debris flows typically occur when intense rainfall or snowmelt triggers landslides or extensive erosion on steep, debris-mantled slopes. The flows can then grow dramatically in size and speed as they entrain material from their beds and banks, but the mechanism of this growth is unclear. Indeed, momentum conservation implies that...
Spread of plague among black-tailed prairie dogs is associated with colony spatial characteristics
T. L. Johnson, J.F. Cully Jr., S.K. Collinge, C. Ray, C.M. Frey, B. K. Sandercock
2011, Journal of Wildlife Management (75) 357-368
Sylvatic plague (Yersinia pestis) is an exotic pathogen that is highly virulent in black‐tailed prairie dogs (Cynomys ludovicianus) and causes widespread colony losses and individual mortality rates >95%. We investigated colony spatial characteristics that may influence inter‐colony transmission of plague at 3 prairie dog colony complexes in the Great Plains....
Challenges in identifying sites climatically matched to the native ranges of animal invaders
G.H. Rodda, C. S. Jarnevich, R.N. Reed
2011, PLoS ONE (6)
Background: Species distribution models are often used to characterize a species' native range climate, so as to identify sites elsewhere in the world that may be climatically similar and therefore at risk of invasion by the species. This endeavor provoked intense public controversy over recent attempts to model areas at...
Molecular typing of Escherichia coli strains associated with threatened sea ducks and near-shore marine habitats of south-west Alaska
Tuula E. Hollmén, Chitrita DebRoy, Paul L. Flint, David E. Safine, Jason L. Schamber, Ann E. Riddle, Kimberly A. Trust
2011, Environmental Microbiology Reports (3) 262-269
In Alaska, sea ducks winter in coastal habitats at remote, non-industrialized areas, as well as in proximity to human communities and industrial activity. We evaluated prevalence and characteristics of Escherichia coli strains in faecal samples of Steller's eiders (Polysticta stelleri; n = 122) and harlequin ducks (Histrionicus histrionicus; n = 21) at an industrialized site and Steller's eiders...
