Magma degassing triggered by static decompression at Kīlauea Volcano, Hawai‘i
Michael P. Poland, Sutton A. Jeff, Terrence M. Gerlach
2009, Geophysical Research Letters (36)
During mid-June 2007, the summit of Kīlauea Volcano, Hawai‘i, deflated rapidly as magma drained from the subsurface to feed an east rift zone intrusion and eruption. Coincident with the deflation, summit SO2 emission rates rose by a factor of four before decaying to background levels over several weeks. We propose...
Shifts in the diet of Lake Ontario alewife in response to ecosystem change
T.J. Stewart, W.G. Sprules, R. O'Gorman
2009, Journal of Great Lakes Research (35) 241-249
In the 1990s, the Lake Ontario ecosystem was dramatically altered due to continued invasions of exotic species including dreissenid mussels and predatory cladocerans. We describe the diet and biomass of prey in the stomachs of adult (≥ 109 mm TL) and sub-adult (Alosa pseudoharengus) in...
Sulfate-rich eolian and wet interdune deposits, erebus crater, meridiani Planum, Mars
J.M. Metz, J.P. Grotzinger, D. M. Rubin, K.W. Lewis, S. W. Squyres, J.F. Bell
2009, Journal of Sedimentary Research (79) 247-264
This study investigates three bedrock exposures at Erebus crater, an ?? 300 m diameter crater approximately 4 km south of Endurance crater on Mars. These outcrops, called Olympia, Payson, and Yavapai, provide additional evidence in support of the dune-interdune model proposed for the formation of the deposits at the Opportunity...
Climatic effects of 30 years of landscape change over the Greater Phoenix, Arizona, region: 1. Surface energy budget changes
M. Georgescu, G. Miguez-Macho, L. T. Steyaert, C.P. Weaver
2009, Journal of Geophysical Research D: Atmospheres (114)
This paper is part 1 of a two-part study that evaluates the climatic effects of recent landscape change for one of the nation's most rapidly expanding metropolitan complexes, the Greater Phoenix, Arizona, region. The region's landscape evolution over an approximate 30-year period since the early 1970s is documented on the...
Sex, season, and time of day interact to affect body temperatures of the Giant Gartersnake
G.D. Wylie, Michael L. Casazza, B.J. Halstead, C.J. Gregory
2009, Journal of Thermal Biology (34) 183-189
1.We examined multiple hypotheses regarding differences in body temperatures of the Giant Gartersnake using temperature-sensitive radio telemetry and an information-theoretic analytical approach.2.Giant Gartersnakes selected body temperatures near 30 ??C, and males and females had similar body temperatures most of the year, except during the midsummer gestation period.3.Seasonal differences in the...
Symbiotic regulation of plant growth, development and reproduction
R. J. Rodriguez, D. Carl Freeman, E.D. McArthur, Y.-O. Kim, R. S. Redman
2009, Communitative and Integrative Biology (2) 141-143
The growth and development of rice (Oryzae sativa) seedlings was shown to be regulated epigenetically by a fungal endophyte. In contrast to un-inoculated (nonsymbiotic) plants, endophyte colonized (symbiotic) plants preferentially allocated resources into root growth until root hairs were well established. During that time symbiotic roots expanded at five times...
Summary of current radiometric calibration coefficients for Landsat MSS, TM, ETM+, and EO-1 ALI sensors
G. Chander, B. L. Markham, D. L. Helder
2009, Remote Sensing of Environment (113) 893-903
This paper provides a summary of the current equations and rescaling factors for converting calibrated Digital Numbers (DNs) to absolute units of at-sensor spectral radiance, Top-Of-Atmosphere (TOA) reflectance, and at-sensor brightness temperature. It tabulates the necessary constants for the Multispectral Scanner (MSS), Thematic Mapper (TM), Enhanced Thematic Mapper Plus (ETM+),...
Ultra-deep oxidation and exotic copper formation at the late pliocene boyongan and bayugo porphyry copper-gold deposits, surigao, philippines: Geology, mineralogy, paleoaltimetry, and their implications for Geologic, physiographic, and tectonic controls
D.P. Braxton, D. R. Cooke, A.M. Ignacio, R. O. Rye, P.J. Waters
2009, Economic Geology (104) 333-349
The Boyongan and Bayugo porphyry copper-gold deposits are part of an emerging belt of intrusion-centered gold-rich deposits in the Surigao district of northeast Mindanao, Philippines. Exhumation and weathering of these Late Pliocene-age deposits has led to the development of the world's deepest known porphyry oxidation profile at Boyongan (600 m),...
Uptake rate constants and partition coefficients for vapor phase organic chemicals using semipermeable membrane devices (SPMDs)
W.L. Cranor, D.A. Alvarez, J.N. Huckins, J. D. Petty
2009, Atmospheric Environment (43) 3211-3219
To fully utilize semipermeable membrane devices (SPMDs) as passive samplers in air monitoring, data are required to accurately estimate airborne concentrations of environmental contaminants. Limited uptake rate constants (kua) and no SPMD air partitioning coefficient (Ksa) existed for vapor-phase contaminants. This research was conducted to expand the existing body of...
Food habits of the hoary bat (LASIURUS CINEREUS) during spring migration through new mexico
E.W. Valdez, P.M. Cryan
2009, Southwestern Naturalist (54) 195-200
Hoary bats (Lasiums cinernis) exhibit continental patterns of migration that are unique to bats, but details about their behaviors during migration are lacking. We captured 177 hoary bats in spring and early summer 2002 as individuals migrated through the Sandia Mountains of north-central New Mexico. Our results support earlier observations...
Nitrate removal in stream ecosystems measured by 15N addition experiments: Total uptake
R. O. Hall Jr., J. L. Tank, D. J. Sobota, P. J. Mulholland, J. M. O’Brien, W. K. Dodds, J.R. Webster, H. M. Valett, G. C. Poole, B. J. Peterson, J.L. Meyer, W. H. McDowell, S. L. Johnson, S. K. Hamilton, N. B. Grimm, S.V. Gregory, Clifford N. Dahm, L. W. Cooper, L. R. Ashkenas, S. M. Thomas, R.W. Sheibley, J. D. Potter, B.R. Niederlehner, L. T. Johnson, A. M. Helton, C.M. Crenshaw, A. J. Burgin, M. J. Bernot, J. J. Beaulieu, C.P. Arangob
2009, Limnology and Oceanography (54) 653-665
We measured uptake length of 15NO-3 in 72 streams in eight regions across the United States and Puerto Rico to develop quantitative predictive models on controls of NO-3 uptake length. As part of the Lotic Intersite Nitrogen eXperiment II project, we chose nine streams in each region corresponding to natural...
Use of OSL dating to establish the stratigraphic framework of Quaternary eolian sediments, Anton scarp upper trench, Northeastern Colorado High Plains, USA
S. A. Mahan, D.C. Noe, J.P. McCalpin
2009, Quaternary International (199) 92-103
This paper contains the results of the optically stimulated luminescence (OSL) dating used to establish stratigraphic ages and relationships of eolian sediments in a trench in northeastern Colorado, USA. This trench was located in the upper face of the Anton scarp, a major topographic lineament trending NW-SE for a distance...
Estimation of sediment sources using selected chemical tracers in the Perry lake basin, Kansas, USA
K. E. Juracek, A.C. Ziegler
2009, International Journal of Sediment Research (24) 108-125
The ability to achieve meaningful decreases in sediment loads to reservoirs requires a determination of the relative importance of sediment sources within the contributing basins. In an investigation of sources of fine-grained sediment (clay and silt) within the Perry Lake Basin in northeast Kansas, representative samples of channel-bank sources, surface-soil...
Anatomy of the dead sea transform from lithospheric to microscopic scale
M. Weber, K. Abu-Ayyash, A. Abueladas, A. Agnon, Z. Alasonati-Tasarova, H. Al-Zubi, A. Babeyko, Y. Bartov, K. Bauer, M. Becken, P. A. Bedrosian, Z. Ben-Avraham, G. Bock, M. Bohnhoff, J. Bribach, P. Dulski, J. Ebbing, R. El-Kelani, A. Forster, H.-J. Forster, U. Frieslander, Z. Garfunkel, H.J. Goetze, V. Haak, C. Haberland, M. Hassouneh, S. Helwig, A. Hofstetter, A. Hoffmann-Rotrie, K.H. Jackel, C. Janssen, D. Jaser, D. Kesten, M. Khatib, R. Kind, O. Koch, I. Koulakov, Gabi Laske, N. Maercklin, R. Masarweh, A. Masri, A. Matar, J. Mechie, N. Meqbel, B. Plessen, P. Moller, A. Mohsen, R. Oberhansli, S. Oreshin, A. Petrunin, I. Qabbani, I. Rabba, O. Ritter, R.L. Romer, G. Rumpker, M. Rybakov, T. Ryberg, J. Saul, F. Scherbaum, S. Schmidt, A. Schulze, S.V. Sobolev, M. Stiller, D. Stromeyer, K. Tarawneh, C. Trela, U. Weckmann, U. Wetzel, K. Wylegalla
2009, Reviews of Geophysics (47)
Fault zones are the locations where motion of tectonic plates, often associated with earthquakes, is accommodated. Despite a rapid increase in the understanding of faults in the last decades, our knowledge of their geometry, petrophysical properties, and controlling processes remains incomplete. The central questions addressed here in our study of...
International importance of the eastern Chukchi Sea as a staging area for migrating king eiders
S. Oppel, D. Lynne. Dickson, A.N. Powell
2009, Polar Biology (32) 775-783
The evaluation of habitats used by arctic birds on migration is crucial for their conservation. We explored the importance of the eastern Chukchi Sea (ECS) as a staging area for king eiders (Somateria spectabilis) migrating between breeding areas in Siberia and western North America and wintering areas in the Bering...
Salt marsh-mangrove interactions in Australasia and the Americas
Neil Saintilan, Kerrylee Rogers, Karen McKee
Gerardio M. E. Perillo, Eric Wolanski, Donald R. Cahoon, Mark M. Brinson, editor(s)
2009, Book chapter
No abstract available....
Habitat-specific breeder survival of Florida Scrub-Jays: Inferences from multistate models
D.R. Breininger, J.D. Nichols, G.M. Carter, D.M. Oddy
2009, Ecology (90) 3180-3189
Quantifying habitat-specific survival and changes in habitat quality within disturbance-prone habitats is critical for understanding population dynamics and variation in fitness, and for managing degraded ecosystems. We used 18 years of color-banding data and multistate capture-recapture models to test whether habitat quality within territories influences survival and detection probability of...
Submarine landslides of the Southern California Borderland
H.J. Lee, H. Gary Greene, B. D. Edwards, M. A. Fisher, W. R. Normark
2009, Special Paper of the Geological Society of America 251-269
Conventional bathymetry, sidescan-sonar and seismic-reflection data, and recent, multibeam surveys of large parts of the Southern California Borderland disclose the presence of numerous submarine landslides. Most of these features are fairly small, with lateral dimensions less than ??2 km. In areas where multibeam surveys are available, only two large landslide...
Toward immunogenetic studies of amphibian chytridiomycosis: Linking innate and acquired immunity
J.Q. Richmond, Anna E. Savage, Kelly R. Zamudio, E.B. Rosenblum
2009, BioScience (59) 311-320
Recent declines in amphibian diversity and abundance have contributed significantly to the global loss of biodiversity. The fungal disease chytridiomycosis is widely considered to be a primary cause of these declines, yet the critical question of why amphibian species differ in susceptibility remains unanswered. Considerable evidence links environmental conditions and...
HRSC: High resolution stereo camera
G. Neukum, R. Jaumann, A.T. Basilevsky, A. Dumke, S. Van Gasselt, B. Giese, E. Hauber, J. W. Head III, C. Heipke, N. Hoekzema, H. Hoffmann, R. Greeley, K. Gwinner, R. Kirk, W. Markiewicz, T. B. McCord, G. Michael, Jan-Peter Muller, J.B. Murray, J. Oberst, P. Pinet, R. Pischel, T. Roatsch, F. Scholten, K. Willner
2009, Conference Paper, European Space Agency, (Special Publication) ESA SP
The High Resolution Stereo Camera (HRSC) on Mars Express has delivered a wealth of image data, amounting to over 2.5 TB from the start of the mapping phase in January 2004 to September 2008. In that time, more than a third of Mars was covered at a resolution of 10-20...
Nonexplosive and explosive magma/wet-sediment interaction during emplacement of Eocene intrusions into Cretaceous to Eocene strata, Trans-Pecos igneous province, West Texas
K.S. Befus, R.E. Hanson, D. P. Miggins, J.A. Breyer, A.B. Busbey
2009, Journal of Volcanology and Geothermal Research (181) 155-172
Eocene intrusion of alkaline basaltic to trachyandesitic magmas into unlithified, Upper Cretaceous (Maastrichtian) to Eocene fluvial strata in part of the Trans-Pecos igneous province in West Texas produced an array of features recording both nonexplosive and explosive magma/wet-sediment interaction. Intrusive complexes with 40Ar/39Ar dates of ~ 47-46??Ma consist of coherent...
Stream-network navigation in the U.S. Geological Survey stream stats web application
K. G. Ries, P. A. Steeves, J. D. Guthrie, A. H. Rea, D. W. Stewart
2009, Conference Paper, Proceedings of the international conference on advanced geographic information systems and web services, GEOWS 2009
StreamStats is a U.S. Geological Survey Web-based geographic information systems application developed as a tool for water-resources planning and management, engineering design, and other applications. The primary functionality of StreamStats allows users to obtain drainage-basin boundaries, basin characteristics, and streamflow statistics for gaged and ungaged sites. Recently, tools that allow...
Dreissenid mussels from the Great Lakes contain elevated thiaminase activity
D. E. Tillitt, S.C. Riley, A.N. Evans, S. J. Nichols, J.L. Zajicek, J. Rinchard, C.A. Richter, C.C. Krueger
2009, Journal of Great Lakes Research (35) 309-312
We examined thiaminase activity in dreissenid mussels collected at different depths and seasons, and from various locations in Lakes Michigan, Ontario, and Huron. Here we present evidence that two dreissenid mussel species (Dreissena bugensis and D. polymorpha) contain thiaminase activity that is 5-100 fold greater than observed in Great Lakes...
Anomalous dispersion due to hydrocarbons: The secret of reservoir geophysics?
R.L. Brown
2009, Leading Edge (Tulsa, OK) (28) 420-425
When P- and S-waves travel through porous sandstone saturated with hydrocarbons, a bit of magic happens to make the velocities of these waves more frequency-dependent (dispersive) than when the formation is saturated with brine. This article explores the utility of the anomalous dispersion in finding more oil and gas, as...
Metal stable isotopes in low-temperature systems: A primer
T.D. Bullen, A. Eisenhauer
2009, Elements (5) 349-352
Recent advances in mass spectrometry have allowed isotope scientists to precisely determine stable isotope variations in the metallic elements. Biologically infl uenced and truly inorganic isotope fractionation processes have been demonstrated over the mass range of metals. This Elements issue provides an overview of the application of metal stable isotopes...
