A unified equation for calculating methane vapor pressures in the CH4-H2O system with measured Raman shifts
W. Lu, I.-M. Chou, R.C. Burruss, Y. Song
2007, Geochimica et Cosmochimica Acta (71) 3969-3978
A unified equation has been derived by using all available data for calculating methane vapor pressures with measured Raman shifts of C-H symmetric stretching band (??1) in the vapor phase of sample fluids near room temperature. This equation eliminates discrepancies among the existing data sets and can be applied at...
Cytherellid species (Ostracoda) and their significance to the Late Quaternary events in the Santos Basin, Brazil
C.T. Bergue, J.C. Coimbra, T. M. Cronin
2007, Senckenbergiana Maritima (37) 5-12
Four autochthonous cytherellid species (Cytherella serratula (BRADY, 1880), C. hermargentina WHATLEY et al. 1998, C. pleistocenica sp. nov. and C. santosensis sp. nov.) have been identified from two offshore cores (44 samples) within the Santos Basin. The distribution of these ostracodes is controlled by local hydrological conditions such as the...
Characteristics of roost sites used by burrowing owls (Athene cunicularia) wintering in Southern Texas
D.L. Williford, M.C. Woodin, M.K. Skoruppa, G.C. Hickman
2007, Southwestern Naturalist (52) 60-66
The western burrowing owl (Athene cunicularia hypugaea) is threatened in Mexico, endangered in Canada, and declining in most of the western United States. Most previous research has focused on burrowing owl breeding biology, and little is known about its winter ecology. We determined characteristics of roost sites used by western...
Meter-scale morphology of the north polar region of mars
Kenneth E. Herkenhoff, S. Byrne, P.S. Russell, K.E. Fishbaugh, A. S. McEwen
2007, Science (317) 1711-1715
Mars' north pole is covered by a dome of layered ice deposits. Detailed (∼30 centimeters per pixel) images of this region were obtained with the High-Resolution Imaging Science Experiment on board the Mars Reconnaissance Orbiter (MRO). Planum Boreum basal unit scarps reveal cross-bedding and show evidence for recent mass wasting,...
Geologic characteristics of the central stretch of the Ticona Channel, north-central Illinois
B.A. Willems, D.H. Malone, A. Pugin
2007, Environmental Geosciences (14) 123-136
The Ticona Channel is located in north-central Illinois and occurs in Grundy, LaSalle, and Putnam counties. It is a buried bedrock valley that served as the principal paleodrainage system in north-central Illinois during the Illinoian and pre-Illinoian. This study focused on the part of the Ticona Channel within the Leonore...
Geology and metallogeny of the Ar Rayn terrane, eastern Arabian shield: Evolution of a Neoproterozoic continental-margin arc during assembly of Gondwana within the East African orogen
J. L. Doebrich, A. M. Al-Jehani, A.A. Siddiqui, T. S. Hayes, J. L. Wooden, P.R. Johnson
2007, Precambrian Research (158) 17-50
The Neoproterozoic Ar Rayn terrane is exposed along the eastern margin of the Arabian shield. The terrane is bounded on the west by the Ad Dawadimi terrane across the Al Amar fault zone (AAF), and is nonconformably overlain on the east by Phanerozoic sedimentary rocks. The terrane is composed of...
Extreme changes to barrier islands along the central Gulf of Mexico coast during Hurricane Katrina
Asbury Sallenger, Wayne Wright, Jeff Lillycrop, Peter Howd, Hilary Stockdon, Kristy K. Guy, Karen Morgan
2007, Circular 1306-5C
Hurricane Katrina caused extreme changes to the barrier islands of the central Gulf of Mexico coast. Dauphin Island, Ala., migrated landward and stranded the remains of its oceanfront row homes in the sea. Chandeleur Islands, La., were completely stripped of their sand, leaving only marshy outcrops in the storm's wake....
Estimating hydraulic properties of volcanic aquifers using constant-rate and variable-rate aquifer tests
K. Rotzoll, A. I. El-Kadi, S. B. Gingerich
2007, Journal of the American Water Resources Association (43) 334-345
In recent years the ground-water demand of the population of the island of Maui, Hawaii, has significantly increased. To ensure prudent management of the ground-water resources, an improved understanding of ground-water flow systems is needed. At present, large-scale estimations of aquifer properties are lacking for Maui. Seven analytical methods using...
High arsenic concentrations and enriched sulfur and oxygen isotopes in a fractured-bedrock ground-water system
G. Lipfert, W.C. Sidle, A.S. Reeve, R. A. Ayuso, A.J. Boyce
2007, Chemical Geology (242) 385-399
Ground water with high arsenic concentrations (up to 26.6????mol L- 1) has sulfate enriched in 34S and 18O in the fractured-bedrock, ground-water system of the Kelly's Cove watershed, Northport, Maine, USA. The ranges of sulfur and oxygen isotope values in aqueous sulfate, ??34S[SO4] and ??18O[SO4], at the Kelly's Cove watershed...
Body size affects the predatory interactions between introduced American Bullfrogs (Rana catesbeiana) and native anurans in China: An experimental study
Y. Wang, Z. Guo, C.A. Pearl, Y. Li
2007, Journal of Herpetology (41) 514-520
Introduced American Bullfrogs (Rana catesbeiana) have established breeding populations in several provinces in China since their introduction in 1959. Although Bullfrogs are viewed as a potentially important predator of Chinese native anurans, their impacts in the field are difficult to quantify. We used two experiments to examine factors likely to...
Sedimentology, stratigraphy, and depositional environment of the Crystal Geyser Dinosaur Quarry, east-central Utah
M.B. Suarez, C.A. Suarez, J.I. Kirkland, Luis A. Gonzalez, D.E. Grandstaff, D.O. Terry Jr.
2007, Palaios (22) 513-527
The Crystal Geyser Dinosaur Quarry, near Green River, Utah, is located at the base of the Lower Cretaceous (Barremian) Yellow Cat Member of the Cedar Mountain Formation. The quarry preserves a nearly monospecific accumulation of a new basal therizinosauroid, Falcarius utahensis. We used field descriptions and petrographic analysis to determine...
Aspergillosis
Kathryn A. Converse
Nancy J. Thomas, D. Bruce Hunter, Carter T. Atkinson, editor(s)
2007, Book chapter, Infectious diseases of wild birds
This chapter contains section titled:IntroductionSynonymsHistoryDistributionHost RangeEtiologyEpizootiologyClinical SignsPathogenesis and PathologyDiagnosisImmunityPublic Health ConcernsDomestic Animal Health ConcernsWildlife Population ImpactsTreatment and ControlUnpublished DataLiterature Cited...
Joint inversion of high-frequency surface waves with fundamental and higher modes
Y. Luo, J. Xia, J. Liu, Q. Liu, S. Xu
2007, Journal of Applied Geophysics (62) 375-384
Joint inversion of multimode surface waves for estimating the shear (S)-wave velocity has received much attention in recent years. In this paper, we first analyze sensitivity of phase velocities of multimodes of surface waves for a six-layer earth model, and then we invert surface-wave dispersion curves of the theoretical model...
Mineralogic constraints on sulfur-rich soils from Pancam spectra at Gusev crater, Mars
J. R. Johnson, J.F. Bell, E. Cloutis, M. Staid, W. H. Farrand, T. McCoy, M. Rice, A. Wang, A. Yen
2007, Geophysical Research Letters (34)
The Mars Exploration Rover (MER) Spirit excavated sulfur-rich soils exhibiting high albedo and relatively white to yellow colors at three main locations on and south of Husband Hill in Gusev crater, Mars. The multispectral visible/near-infrared properties of these disturbed soils revealed by the Pancam stereo color camera vary appreciably over...
The Committee on Earth Observation Satellites (CEOS): Advancing the global earth observations agenda
B.J. Ryan, B.K. Quirk, T.S. Stryker
2007, Conference Paper, International Astronautical Federation - 58th International Astronautical Congress 2007
[No abstract available]...
Evaluation of the applicability of the dual‐domain mass transfer model in porous media containing connected high‐conductivity channels
Gaisheng Liu, Chunmiao Zheng, Steven M. Gorelick
2007, Water Resources Research (43)
This paper evaluates the dual‐domain mass transfer (DDMT) model to represent transport processes when small‐scale high‐conductivity (K) preferential flow paths (PFPs) are present in a homogenous porous media matrix. The effects of PFPs upon solute transport were examined through detailed numerical experiments involving different realizations of PFP networks, PFP/matrix conductivity...
Saturn's icy satellites investigated by Cassini-VIMS. I. Full-disk properties: 350-5100 nm reflectance spectra and phase curves
G. Filacchione, F. Capaccioni, T. B. McCord, A. Coradini, P. Cerroni, G. Bellucci, F. Tosi, E. D’Aversa, V. Formisano, R. H. Brown, K. H. Baines, J.-P. Bibring, B. J. Buratti, R. N. Clark, M. Combes, D. P. Cruikshank, P. Drossart, R. Jaumann, Y. Langevin, D. L. Matson, V. Mennella, R.M. Nelson, P. D. Nicholson, B. Sicardy, Christophe Sotin, G. Hansen, K. Hibbitts, M. Showalter, S. Newman
2007, Icarus (186) 259-290
Saturn's icy satellites are among the main scientific objectives of the Cassini-VIMS (Visual and Infrared Mapping Spectrometer) experiment. This paper contains a first systematic and comparative analysis of the full-disk spectral properties of Dione, Enceladus, Epimetheus, Hyperion, Iapetus, Mimas, Phoebe, Rhea and Tethys as observed by VIMS from July 2004...
The atlantic salmon: Genetics, conservation and management
Eric Verspoor, Lee Stradmeyer, Jennifer L. Nielsen, editor(s)
2007, Book
Atlantic Salmon is a cultural icon throughout its North Atlantic range; it is the focus of probably the World’s highest profile recreational fishery and is the basis for one of the World’s largest aquaculture industries. Despite this, many wild stocks of salmon are in decline and underpinning this is a...
Cycles of hurricane landfalls on the eastern United States linked to changes in Atlantic sea-surface temperatures
Richard Z. Poore, Terry Quinn, Julie Richey, Jackie L. Smith
2007, Circular 1306-2A
The occurrence of hurricane landfalls on the United States may be related to alternating intervals of persistent above-average and below-average surface temperature of the North Atlantic Ocean. The cycle of temperature variations, known as the Atlantic Multidecadal Oscillation (AMO), has been identified by study of records based on thermometer readings...
Three-dimensional P wave velocity model for the San Francisco Bay region, California
C.H. Thurber, T.M. Brocher, H. Zhang, V.E. Langenheim
2007, Journal of Geophysical Research B: Solid Earth (112)
[1] A new three-dimensional P wave velocity model for the greater San Francisco Bay region has been derived using the double-difference seismic tomography method, using data from about 5,500 chemical explosions or air gun blasts and approximately 6,000 earthquakes. The model region covers 140 km NE-SW by 240...
MODIS imagery as a tool for synoptic water quality assessments in the southern California coastal ocean
N.P. Nezlin, P.M. DiGiacomo, B.H. Jones, K.M. Reifel, J.A. Warrick, S.C. Johnson, M.J. Mengel
2007, Conference Paper, Proceedings of SPIE - The International Society for Optical Engineering
The dynamics of rainstorm plumes in the coastal waters of southern California was studied during the Bight'03 Regional Water Quality Program surveys. Measurements of surface salinity and bacterial counts collected from research vessels were compared to MODIS-Aqua satellite imagery. The spectra of normalized water-leaving radiation (nLw) were different in plumes...
Finite-frequency traveltime tomography of San Francisco Bay region crustal velocity structure
F. F. Pollitz
2007, Geophysical Journal International (171) 630-656
Seismic velocity structure of the San Francisco Bay region crust is derived using measurements of finite-frequency traveltimes. A total of 57 801 relative traveltimes are measured by cross-correlation over the frequency range 0.5–1.5 Hz. From these are derived 4862 ‘summary’ traveltimes, which are used to derive 3-D P-wave velocity structure...
Automated classifications of topography from DEMs by an unsupervised nested-means algorithm and a three-part geometric signature
J. Iwahashi, R.J. Pike
2007, Geomorphology (86) 409-440
An iterative procedure that implements the classification of continuous topography as a problem in digital image-processing automatically divides an area into categories of surface form; three taxonomic criteria–slope gradient, local convexity, and surface texture–are calculated from a square-grid digital elevation model (DEM)....
Free zinc ion and dissolved orthophosphate effects on phytoplankton from Coeur d'Alene Lake, Idaho
James S. Kuwabara, Brent R. Topping, Paul F. Woods, James L. Carter
2007, Environmental Science & Technology (41) 2811-2817
Coeur d'Alene Lake in northern Idaho is fed by two major rivers: the Coeur d'Alene River from the east and the St. Joe River from the south, with the Spokane River as its outlet to the north. This phosphorus-limited lake has been subjected to decades of mining (primarily for zinc...
Multiple-methods investigation of recharge at a humid-region fractured rock site, Pennsylvania, USA
C.S. Heppner, J. R. Nimmo, G.J. Folmar, W.J. Gburek, D. W. Risser
2007, Hydrogeology Journal (15) 915-927
Lysimeter-percolate and well-hydrograph analyses were combined to evaluate recharge for the Masser Recharge Site (central Pennsylvania, USA). In humid regions, aquifer recharge through an unconfined low-porosity fractured-rock aquifer can cause large magnitude water-table fluctuations over short time scales. The unsaturated hydraulic characteristics of the subsurface porous...
