Status review of the Marbled Murrelet (Brachyramphus marmoratus) in Alaska and British Columbia
John F. Piatt, K.J. Kuletz, A.E. Burger, Scott A. Hatch, Vicki L. Friesen, T.P. Birt, Mayumi L. Arimitsu, G.S. Drew, A.M.A. Harding, K.S. Bixler
2007, Open-File Report 2006-1387
The Marbled Murrelet (Brachyramphus marmoratus) is a small, diving seabird inhabiting inshore waters of the Northeastern Pacific Ocean. This species feeds on small, schooling fishes and zooplankton, and nests primarily on the moss-covered branches of large, old-growth conifers, and also, in some parts of its range, on the ground. We...
The National Streamflow Statistics Program: A Computer Program for Estimating Streamflow Statistics for Ungaged Sites
Kernell G. Ries III, J. B. With sections by Atkins, P.R. Hummel, Matthew J. Gray, R. Dusenbury, M.E. Jennings, W.H. Kirby, H. C. Riggs, V.B. Sauer, W.O. Thomas Jr.
2007, Techniques and Methods 4-A6
The National Streamflow Statistics (NSS) Program is a computer program that should be useful to engineers, hydrologists, and others for planning, management, and design applications. NSS compiles all current U.S. Geological Survey (USGS) regional regression equations for estimating streamflow statistics at ungaged sites in an easy-to-use interface that operates on...
Reconnaissance of arsenic concentrations in ground water from bedrock and unconsolidated aquifers in eight northern-tier counties of Pennsylvania
Dennis J. Low, Daniel G. Galeone
2007, Open-File Report 2006-1376
Samples of ground water for analysis of total-arsenic concentrations were collected in eight counties--Potter, Tioga, Bradford, Susquehanna, Wayne, Pike, Sullivan, and Wyoming--and from eight bedrock formations (bedrock aquifers) and overlying glacial aquifers in the north-central and northeastern parts of Pennsylvania in July 2005 and from March through June 2006. The...
High-resolution airborne gravity imaging over James Ross Island (West Antarctica)
T.A. Jordan, Fausto Ferraccioli, P.C. Jones, J.L. Smellie, M. Ghidella, H. F. J. Corr, A.F. Zakrajsek
2007, Open-File Report 2007-1047-SRP-060
James Ross Island (JRI) exposes a Miocene-Recent alkaline basaltic volcanic complex that developed in a back-arc, east of the northern Antarctic Peninsula. JRI has been the focus of several geological studies because it provides a window on Neogene magmatic processes and paleoenvironments. However, little is known about its internal structure....
Main Andean sinistral shear along the Cooper Bay Dislocation Zone, South Georgia?
M.L. Curtis
2007, Open-File Report 2007-1047-SRP-034
The Cooper Bay Dislocation Zone (CBDZ) represents a major NW-SE trending tectonic boundary within the island of South Georgia that juxtaposes components of a Middle Jurassic to mid-Cretaceous island-arc and back-arc- basin system. New detailed structural data from the southern end of the dislocation zone reveal that earliest displacement along the boundary appears...
Extensive debris flow deposits on the eastern Wilkes Land margin: a key to changing glacial regimes
C. Escutia, F. Donda, F.J. Lobo, M. Tanahashi
2007, Open-File Report 2007-1047-SRP-026
Glacial sequences deposited on the base-of-slope and upper continental rise off the eastern Wilkes Land margin show that depositional systems vary with time. During the early Oligocene to middle-late Miocene times glacial sequences are dominated by extensive glacigenic debris flow deposits (GDFs) that have lens or wedge shaped external geometries and internal chaotic...
The cultural, socio-economic and ecological determinants of avian influenza and its spread
Leslie A. Dierauf, Lonnie J. King, Steven Salzberg, S. Ip, Marguerite Pappaioanou, Sharon Kemerer, Robert A. Cook, A. Townsend Peterson
David E. Blockstein, Kelly M. McManus, editor(s)
2007, Conference Paper, Integrating environment and human health: A report of the Seventh National Conference on Science, Policy and the Environment
No abstract available....
The FORE-SCE model: a practical approach for projecting land cover change using scenario-based modeling
Terry L. Sohl, Kristi Sayler, Mark A. Drummond, Thomas R. Loveland
2007, Journal of Land Use Science (2) 103-126
A wide variety of ecological applications require spatially explicit, historic, current, and projected land use and land cover data. The U.S. Land Cover Trends project is analyzing contemporary (1973–2000) land-cover change in the conterminous United States. The newly developed FORE-SCE model used Land Cover Trends data and theoretical, statistical, and...
Geometric correction and digital elevation extraction using multiple MTI datasets
Jeffrey A. Mercier, Robert A. Schowengerdt, James C. Storey, Jody L. Smith
2007, Photogrammetric Engineering and Remote Sensing (73) 133-142
Digital Elevation Models (DEMs) are traditionally acquired from a stereo pair of aerial photographs sequentially captured by an airborne metric camera. Standard DEM extraction techniques can be naturally extended to satellite imagery, but the particular characteristics of satellite imaging can cause difficulties. The spacecraft ephemeris with respect to the ground...
Foraging behaviors of Surf Scoters and White-Winged Scoters during spawning of Pacific herring
Daniel Esler, Sean Boyd
2007, Condor (109) 216-222
Winter diets of Surf (Melanitta perspicillata) and White-winged Scoters (M. fusca) are composed primarily of bivalves. During spawning of Pacific herring (Clupea pallasi) in early spring, scoters shift their diets to herring eggs. Using radio-telemetry, we contrasted scoter foraging behaviors between winter and herring spawning periods. Scoters increased their dive...
Investigating the Environmental Effects of Agriculture Practices on Natural Resources: Scientific Contributions of the U.S. Geological Survey to Enhance the Management of Agricultural Landscapes
Water Resources Division, U.S. Geological Survey
2007, Fact Sheet 2007-3001
The U.S. Geological Survey (USGS) enhances and protects the quality of life in the United States by advancing scientific knowledge to facilitate effective management of hydrologic, biologic, and geologic resources. Results of selected USGS research and monitoring projects in agricultural landscapes are presented in this Fact Sheet. Significant environmental and...
Ground-Water Quality of the Northern High Plains Aquifer, 1997, 2002-04
Jennifer S. Stanton, Sharon L. Qi
2007, Scientific Investigations Report 2006-5138
An assessment of ground-water quality in the northern High Plains aquifer was completed during 1997 and 2002-04. Ground-water samples were collected at 192 low-capacity, primarily domestic wells in four major hydrogeologic units of the northern High Plains aquifer-Ogallala Formation, Eastern Nebraska, Sand Hills, and Platte River Valley. Each well was...
Growth rates of young-of-year shovelnose sturgeon in the Upper Missouri River
P. J. Braaten, D.B. Fuller
2007, Journal of Applied Ichthyology (23) 506-515
Information on growth during the larval and young-of-year life stages in natural river environments is generally lacking for most sturgeon species. In this study, methods for estimating ages and quantifying growth were developed for field-sampled larval and young-of-year shovelnose sturgeon Scaphirhynchus platorynchus in the upper Missouri River. First, growth was assessed by...
Model calibration and issues related to validation, sensitivity analysis, post-audit, uncertainty evaluation and assessment of prediction data needs
Claire R. Tiedeman, Mary C. Hill
2007, Book chapter, Groundwater: Resource Evaluation, Augmentation, Contamination, Restoration, Modeling and Management
When simulating natural and engineered groundwater flow and transport systems, one objective is to produce a model that accurately represents important aspects of the true system. However, using direct measurements of system characteristics, such as hydraulic conductivity, to construct a model often produces simulated values that poorly match observations of...
Antarctic ice-rafted detritus (IRD) in the South Atlantic: Indicators of iceshelf dynamics or ocean surface conditions?
Simon H.H. Nielsen, D.A. Hodell
2007, Open-File Report 2007-1047-SRP-020
Ocean sediment core TN057-13PC4/ODP1094, from the Atlantic sector of the Southern Ocean, contains elevated lithogenic material in sections representing the last glacial period compared to the Holocene. This ice-rafted detritus is mainly comprised of volcanic glass and ash, but has a significant input of what was previously interpreted as quartz...
3D Visualization of Earthquake Focal Mechanisms Using ArcScene
Keith A. Labay, Peter J. Haeussler
2007, Data Series 241
We created a new tool, 3D Focal Mechanisms (3DFM), for viewing earthquake focal mechanism symbols three dimensionally. This tool operates within the Environmental Systems Research Institute (ESRI®) GIS software ArcScene® 9.x. The program requires as input a GIS point dataset of earthquake locations containing strike, dip, and rake values for...
Regional Water-Resources Studies in Nevada
Eva M. Bauer, Shannon C. Watermolen
2007, Fact Sheet 2007-3006
Introduction: Water-resources information for the State of Nevada should be readily accessible to community planners and the general public in a user-friendly web environment and should be actively managed and maintained with accurate historic and current hydrologic data. The USGS, in cooperation with State of Nevada and local government agencies,...
Summary of Survival Data from Juvenile Coho Salmon in the Klamath River, Northern California, 2006
John W. Beeman
2007, Open-File Report 2007-1023
Little is known about the survival of ESA-listed juvenile coho salmon during their seaward migration in the lower Klamath River. In 2006, the Bureau of Reclamation funded a study to estimate the survival of radio-tagged juvenile coho salmon in the Klamath River downstream of Iron Gate Dam. A series of...
Zircon U-Pb Ages from an Ultra-High Temperature Metapelite, Rauer Group, East Antarctica: Implications for Overprints by Grenvillian and Pan-African Events
Yanbin Wang, Laixi Tong, Dunyi Liu
2007, Open-File Report 2007-1047-SRP-023
SHRIMP U-Pb dating of zircon from an ultra-high temperature (UHT, ~1000 °C) granulite-facies metapelite from the Rauer Group, Mather Peninsula, east Antarctica, has yielded evidence for two episodes of metamorphic zircon growth, at ~1.00 Ga and ~530 Ma, and two episodes of magmatism in the source region for the protolith...
U.S. Geological Survey Georgia Water Science Center and City of Brunswick–Glynn County Cooperative Water Program— Summary of activities, July 2005 through June 2006
Gregory S. Cherry
2007, Open-File Report 2006-1368
Since 1959, the U.S. Geological Survey has conducted a cooperative water resources program (CWP) with the City of Brunswick and Glynn County in the Brunswick, Georgia, area. Since the late 1950s, the salinity of ground water in the Upper Floridan aquifer near downtown Brunswick, Georgia, has been increasing, and its...
Geostatistical Modeling of Sediment Abundance in a Heterogeneous Basalt Aquifer at the Idaho National Laboratory, Idaho
John A. Welhan, Renee L. Farabaugh, Melissa J. Merrick, Steven R. Anderson
2007, Scientific Investigations Report 2006-5316
The spatial distribution of sediment in the eastern Snake River Plain aquifer was evaluated and modeled to improve the parameterization of hydraulic conductivity (K) for a subregional-scale ground-water flow model being developed by the U.S. Geological Survey. The aquifer is hosted within a layered series of permeable basalts within which...
First Record of Corisella inscripta (Uhler) (Heteroptera: Corixidae) from North Dakota
Bruce A. Hanson, David M. Mushet, Ned Euliss, Stephen W. Chordas III
2007, Prairie Naturalist (39) 107-110
Corisella inscripta is a water boatman species that was reported in H. B. Hungerford's (1948) seminal monograph as occurring throughout Mexico and nine western states of the United States. Subsequently, additional records of C. inscripta have been reported for British Columbia in Canada (Maw et al. 2000) and for Montana (Roemhild 1976), Arkansas...
Relatively simple through-going fault planes at large-earthquake depth may be concealed by the surface complexity of strike-slip faults
Russell W. Graymer, Victoria E. Langenheim, Robert W. Simpson, Robert C. Jachens, David A. Ponce
2007, Geological Society, London, Special Publications (290) 189-201
At the surface, strike-slip fault stepovers, including abrupt fault bends, are typically regions of complex, often disconnected faults. This complexity has traditionally led geologists studying the hazard of active faults to consider such stepovers as important fault segment boundaries, and to give lower weight to earthquake scenarios that involve rupture...
Type region of the Ione Formation (Eocene), central California: Stratigraphy, paleogeography, and relation to auriferous gravels
Scott Creely, Eric R. Force
2007, Open-File Report 2006-1378
The middle Eocene Ione Formation extends over 200 miles (320 km) along the western edge of the Sierra Nevada. Our study was concentrated in the type region, 30 miles (48 km) along strike. There a bedrock ridge forms the seaward western side of the Ione depositional tract, defining a subbasin...
New Rb-Sr mineral ages temporally link plume events with accretion at the margin of Gondwana
M.J. Flowerdew, J.S. Daly, T.R. Riley
2007, Open-File Report 2007-1047-SRP-012
Five of six Rb-Sr muscovite mineral isochron ages from the Scotia Metamorphic Complex of the South Orkney Islands, West Antarctica, average 190 ± 4 Ma. The muscovite ages are interpreted to date foliation-formation and thus also accretion and subduction at the Gondwana margin. Coincident picrite and ferropicrite magmatism, indicative of...
