Stratigraphic framework and estuarine depositional environments of the Miocene Bear Lake Formation, Bristol Bay Basin, Alaska: Onshore equivalents to potential reservoir strata in a frontier gas-rich basin
E.S. Finzel, K.D. Ridgway, R.R. Reifenstuhl, R. B. Blodgett, J. M. White, P.L. Decker
2009, American Association of Petroleum Geologists Bulletin (93) 379-405
The Miocene Bear Lake Formation is exposed along the coast and mountains of the central Alaska Peninsula and extends offshore as part of the Bristol Bay Basin. The Bear Lake Formation is up to 2360 m (7743 ft) thick in an offshore well and is considered to have the highest...
Instability of seawater pH in the South China Sea during the mid-late Holocene: Evidence from boron isotopic composition of corals
Yajing Liu, W. Liu, Z. Peng, Y. Xiao, G. Wei, W. Sun, J. He, Gaisheng Liu, C. L. Chou
2009, Geochimica et Cosmochimica Acta (73) 1264-1272
We used positive thermal ionization mass spectrometry (PTIMS) to generate high precision ??11B records in Porites corals of the mid-late Holocene from the South China Sea (SCS). The ??11B values of the Holocene corals vary significantly, ranging from 22.2??? to 25.5???. The paleo-pH records of the SCS, reconstructed from the...
TreeMAC: Localized TDMA MAC protocol for real-time high-data-rate sensor networks
W.-Z. Song, R. Huang, B. Shirazi, R. LaHusen
2009, Pervasive and Mobile Computing (5) 750-765
Earlier sensor network MAC protocols focus on energy conservation in low-duty cycle applications, while some recent applications involve real-time high-data-rate signals. This motivates us to design an innovative localized TDMA MAC protocol to achieve high throughput and low congestion in data collection sensor networks, besides energy conservation. TreeMAC divides a...
Effect of dietary α-tocopherol + ascorbic acid, selenium, and iron on oxidative stress in sub-yearling Chinook salmon (Oncorhynchus tshawytscha Walbaum)
T.L. Welker, J.L. Congleton
2009, Journal of Animal Physiology and Animal Nutrition (93) 15-25
A three-variable central composite design coupled with surface-response analysis was used to examine the effects of dietary ??-tocopherol + ascorbic acid (TOCAA), selenium (Se), and iron (Fe) on indices of oxidative stress in juvenile spring Chinook salmon. Each dietary factor was tested at five levels for a total of fifteen...
Variations in population exposure and sensitivity to lahar hazards from Mount Rainier, Washington
N. Wood, C. Soulard
2009, Journal of Volcanology and Geothermal Research (188) 367-378
Although much has been done to understand, quantify, and delineate volcanic hazards, there are fewer efforts to assess societal vulnerability to these hazards, particularly demographic differences in exposed populations or spatial variations in exposure to regional hazards. To better understand population diversity in volcanic hazard zones, we assess the number...
Data layer integration for the national map of the united states
E.L. Usery, M.P. Finn, M. Starbuck
2009, Cartographic Perspectives 28-41
The integration of geographic data layers in multiple raster and vector formats, from many different organizations and at a variety of resolutions and scales, is a significant problem for The National Map of the United States being developed by the U.S. Geological Survey. Our research has examined data integration from...
Seismic analysis of clinoform depositional sequences and shelf-margin trajectories in Lower Cretaceous (Albian) strata, Alaska North Slope
David W. Houseknecht, Kenneth J. Bird, Christopher J. Schenk
2009, Basin Research (21) 644-654
Lower Cretaceous strata beneath the Alaska North Slope include clinoform depositional sequences that filled the western Colville foreland basin and overstepped the Beaufort rift shoulder. Analysis of Albian clinoform sequences with two‐dimensional (2D) seismic data resulted in the recognition of seismic facies inferred to represent lowstand, transgressive and highstand systems...
Geotechnical properties of cemented sands in steep slopes
B.D. Collins, N. Sitar
2009, Journal of Geotechnical and Geoenvironmental Engineering (135) 1359-1366
An investigation into the geotechnical properties specific to assessing the stability of weakly and moderately cemented sand cliffs is presented. A case study from eroding coastal cliffs located in central California provides both the data and impetus for this study. Herein, weakly cemented sand is defined as having an unconfined...
Molecular detection of native and invasive marine invertebrate larvae present in ballast and open water environmental samples collected in Puget Sound
J.B.J. Harvey, M.S. Hoy, R. J. Rodriguez
2009, Journal of Experimental Marine Biology and Ecology (369) 93-99
Non-native marine species have been and continue to be introduced into Puget Sound via several vectors including ship's ballast water. Some non-native species become invasive and negatively impact native species or near shore habitats. We present a new methodology for the development and testing of taxon specific PCR primers designed...
The Moon mineralogy mapper (M3) on Chandrayaan-1
C.M. Pieters, J. Boardman, B. Buratti, A. Chatterjee, R. Clark, T. Glavich, R. Green, J. Head, P. Isaacson, E. Malaret, T. McCord, J. Mustard, N. Petro, C. Runyon, M. Staid, J. Sunshine, L. Taylor, S. Tompkins, P. Varanasi, M. White
2009, Current Science (96) 500-505
The Moon Mineralogy Mapper (M3) is a NASA-supported guest instrument on ISRO's remote sensing mission to Moon, Chandrayaan-1. The M3 is an imaging spectrometer that operates from the visible into the near-infrared (0.42-3.0 ??m) where highly diagnostic mineral absorption bands occur. Over the course of the mission M3 will provide...
Delta lobe degradation and hurricane impacts governing large-scale coastal behavior, South-central Louisiana, USA
M.D. Miner, M.A. Kulp, D. M. FitzGerald, J. G. Flocks, H.D. Weathers
2009, Geo-Marine Letters (29) 441-453
A large deficit in the coastal sediment budget, high rates of relative sea-level rise (???0.9 cm/year), and storm-induced current and wave erosion are forcing barrier shoreface retreat along the periphery of the Mississippi River delta plain. Additionally, conversion of interior wetlands to open water has increased the bay tidal prism,...
Characterization of Mars' seasonal caps using neutron spectroscopy
T.H. Prettyman, W. C. Feldman, T.N. Titus
2009, Journal of Geophysical Research E: Planets (114)
Mars' seasonal caps are characterized during Mars years 26 and 27 (April 2002 to January 2006) using data acquired by the 2001 Mars Odyssey Neutron Spectrometer. Time-dependent maps of the column abundance of seasonal CO 2 surface ice poleward of 60?? latitude in both hemispheres are determined from spatially deconvolved,...
Using the Sonoran Desert test site to monitor the long-term radiometric stability of the Landsat TM/ETM+ and Terra MODIS sensors
A. Angal, X. Xiong, T. Choi, G. Chander, A. Wu
2009, Conference Paper, Proceedings of SPIE - The International Society for Optical Engineering
Pseudo-invariant ground targets have been extensively used to monitor the long-term radiometric calibration stability of remote sensing instruments. The NASA MODIS Characterization Support Team (MCST), in collaboration with members from the U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center, has previously demonstrated the use of pseudo-invariant ground...
An ecological risk assessment of the acute and chronic effects of the herbicide clopyralid to rainbow trout (Oncorhynchus mykiss)
J.F. Fairchild, A.L. Allert, K.P. Feltz, K.J. Nelson, J.A. Valle
2009, Archives of Environmental Contamination and Toxicology (57) 725-731
Clopyralid (3,6-dichloro-2-pyridinecarboxylic acid) is a pyridine herbicide frequently used to control invasive, noxious weeds in the northwestern United States. Clopyralid exhibits low acute toxicity to fish, including the rainbow trout (Oncorhynchus mykiss) and the threatened bull trout (Salvelinus confluentus). However, there are no published chronic toxicity...
Effects of spatial heterogeneity on butterfly species richness in Rocky Mountain National Park, CO, USA
S. Kumar, S.E. Simonson, T.J. Stohlgren
2009, Biodiversity and Conservation (18) 739-763
We investigated butterfly responses to plot-level characteristics (plant species richness, vegetation height, and range in NDVI [normalized difference vegetation index]) and spatial heterogeneity in topography and landscape patterns (composition and configuration) at multiple spatial scales. Stratified random sampling was used to collect data on butterfly species richness from seventy-six 20...
Estimating survival of precocial chicks during the prefledging period using a catch-curve analysis and count-based age-class data
C.P. McGowan, J.J. Millspaugh, M.R. Ryan, C.D. Kruse, G. Pavelka
2009, Journal of Field Ornithology (80) 79-87
Estimating reproductive success for birds with precocial young can be difficult because chicks leave nests soon after hatching and individuals or broods can be difficult to track. Researchers often turn to estimating survival during the prefledging period and, though effective, mark-recapture based approaches are not always feasible due to cost,...
The speciation of aqueous zinc(II) bromide solutions to 500 °C and 900 MPa determined using Raman spectroscopy
Kenji Mibe, I-Ming Chou, Alan J. Anderson, Robert A. Mayanovic, William A. Bassett
2009, Chemical Geology (259) 48-53
A Raman spectral study was carried out on 3 solutions of varying concentration and bromide/zinc ratios. Spectra were collected at 11 different temperature-pressure conditions ranging from ambient to 500????C-0.9??GPa. Raman band assignments for zinc(II) bromide species reported in previous studies were used to determine the relative concentrations of ZnBr42-, ZnBr3-,...
A test and re-estimation of Taylor's empirical capacity-reserve relationship
K. R. Long
2009, Natural Resources Research (18) 57-63
In 1977, Taylor proposed a constant elasticity model relating capacity choice in mines to reserves. A test of this model using a very large (n = 1,195) dataset confirms its validity but obtains significantly different estimated values for the model coefficients. Capacity is somewhat inelastic with respect to reserves, with...
Diets of aquatic birds reflect changes in the Lake Huron ecosystem
Craig E. Hebert, D.V. Chip Weseloh, Abode Idrissi, Michael T. Arts, Edward F. Roseman
2009, Aquatic Ecosystem Health & Management (12) 37-44
Human activities have affected the Lake Huron ecosystem, in part, through alterations in the structure and function of its food webs. Insights into the nature of food web change and its ecological ramifications can be obtained through the monitoring of high trophic level predators such as aquatic birds. Often, food...
Removal of organic wastewater contaminants in septic systems using advanced treatment technologies
J.D. Wilcox, J.M. Bahr, C.J. Hedman, J.D.C. Hemming, M.A.E. Barman, K. R. Bradbury
2009, Journal of Environmental Quality (38) 149-156
The detection of pharmaceuticals and other organic wastewater contaminants (OWCs) in ground water and surface-water bodies has raised concerns about the possible ecological impacts of these compounds on nontarget organisms. On-site wastewater treatment systems represent a potentially significant route of entry for organic contaminants to the environment. In this study,...
Effects of chemical immobilization on survival of African buffalo in the Kruger National Park
W.C. Oosthuizen, P.C. Cross, J.A. Bowers, C. Hay, M.R. Ebinger, P. Buss, M. Hofmeyr, E.Z. Cameron
2009, Journal of Wildlife Management (73) 149-153
Capturing, immobilizing, and fitting radiocollars are common practices in studies of large mammals, but success is based on the assumptions that captured animals are representative of the rest of the population and that the capture procedure has negligible effects. We estimated effects of chemical immobilization on mortality rates of African...
Geomorphology, stability and mobility of the Currituck slide
J. Locat, H. Lee, Uri S. ten Brink, D. Twichell, E. Geist, M. Sansoucy
2009, Marine Geology (264) 28-40
Over the last 100,000??years, the U.S. Atlantic continental margin has experienced various types of mass movements some of which are believed to have taken place at times of low sea level. At one of these times of low sea level a significant trigger caused a major submarine mass movement off...
A simplified water temperature model for the Colorado River below Glen Canyon Dam
S.A. Wright, C.R. Anderson, N. Voichick
2009, River Research and Applications (25) 675-686
Glen Canyon Dam, located on the Colorado River in northern Arizona, has affected the physical, biological and cultural resources of the river downstream in Grand Canyon. One of the impacts to the downstream physical environment that has important implications for the aquatic ecosystem is the transformation of the thermal regime...
Database for earthquake strong motion studies in Italy
G. Scasserra, J.P. Stewart, R. E. Kayen, G. Lanzo
2009, Journal of Earthquake Engineering (13) 852-881
We describe an Italian database of strong ground motion recordings and databanks delineating conditions at the instrument sites and characteristics of the seismic sources. The strong motion database consists of 247 corrected recordings from 89 earthquakes and 101 recording stations. Uncorrected recordings were drawn from public web sites and processed...
Regional variations in water quality and relationships to soil and bedrock weathering in the southern Sacramento Valley, California, USA
R. B. Wanty, M. B. Goldhaber, J.M. Morrison, L. Lee
2009, Applied Geochemistry (24) 1512-1523
Regional patterns in ground- and surface-water chemistry of the southern Sacramento Valley in California were evaluated using publicly available geochemical data from the US Geological Survey's National Water Information System (NWIS). Within the boundaries of the study area, more than 2300 ground-water analyses and more than 20,000 surface-water analyses were...
