Seismicity of the Earth 1900-2010 eastern margin of the Australia plate
Harley M. Benz, Matthew Herman, Arthur C. Tarr, Gavin P. Hayes, Kevin P. Furlong, Antonio H. Villasenor, Richard L. Dart, Susan Rhea
2011, Open-File Report 2010-1083-I
The eastern margin of the Australia plate is one of the most seismically active areas of the world due to high rates of convergence between the Australia and Pacific plates. In the region of New Zealand, the 3,000 km long Australia-Pacific plate boundary extends from south of Macquarie Island to...
Characterizing the performance of ecosystem models across time scales: A spectral analysis of the North American Carbon Program site‐level synthesis
Michael C. Dietze, Rodrigo Vargas, Andrew D. Richardson, Paul C. Stoy, Ryan Anderson, M. A. Arain, I. Baker, T. Andrew Black, Jing M. Chen, Philippe Ciais, Lawrence B. Flanagan, Christopher M. Gough, Robert Grant, David Hollinger, R. C. Izaurralde, C.J. Kucharik, P. Lafleur, Shuguang Liu, E. Lokupitiya, Y. Luo, J.W. Munger, Changhui Peng, Benjamin Poulter, David T. Price, D. Ricciuto, William J. Riley, A. Sahoo, Kevin Schaefer, Andrew E. Suyker, Hanqin Tian, Christina Tonitto, Hans Verbeeck, Shashi B. Verma, W. Wang, Ensheng Weng
2011, Journal of Geophysical Research: Biogeosciences (116)
[1] Ecosystem models are important tools for diagnosing the carbon cycle and projecting its behavior across space and time. Despite the fact that ecosystems respond to drivers at multiple time scales, most assessments of model performance do not discriminate different time scales. Spectral methods, such as wavelet analyses, present an...
Status and understanding of groundwater quality in the San Diego Drainages Hydrogeologic Province, 2004: California GAMA Priority Basin Project
Michael T. Wright, Kenneth Belitz
2011, Scientific Investigations Report 2011-5154
Groundwater quality in the approximately 3,900-square-mile (mi2) San Diego Drainages Hydrogeologic Province (hereinafter San Diego) study unit was investigated from May through July 2004 as part of the Priority Basin Project of the Groundwater Ambient Monitoring and Assessment (GAMA) Program. The study unit is located in southwestern California in the...
Groundwater quality in the San Diego Drainages Hydrogeologic Province, California
Michael T. Wright, Kenneth Belitz
2011, Fact Sheet 2011-3111
More than 40 percent of California's drinking water is from groundwater. To protect this vital resource, the State of California created the Groundwater Ambient Monitoring and Assessment (GAMA) Program. The Priority Basin Project of the GAMA Program provides a comprehensive assessment of the State's groundwater quality and increases public access...
Seismicity of the Earth 1900-2010 New Guinea and vicinity
Harley M. Benz, Matthew Herman, Arthur C. Tarr, Gavin P. Hayes, Kevin P. Furlong, Antonio H. Villasenor, Richard L. Dart, Susan Rhea
2011, Open-File Report 2010-1083-H
There have been 22 M7.5+ earthquakes recorded in the New Guinea region since 1900. The dominant earthquake mechanisms are thrust and strike slip, associated with the arc-continent collision and the relative motions between numerous local microplates. The largest earthquake in the region was a M8.2 shallow thrust fault event in...
Seismicity of the Earth 1900-2010 Australia plate and vicinity
Harley M. Benz, Matthew Herman, Arthur C. Tarr, Gavin P. Hayes, Kevin P. Furlong, Antonio H. Villasenor, Richard L. Dart, Susan Rhea
2011, Open-File Report 2010-1083-G
This map shows details of the Australia plate and vicinity not presented in Tarr and others (2010). The boundary of the Australia plate includes all fundamental plate boundary components: mid-ocean ridges, subduction zones, arc-continent collisions, and large-offset transform faults. Along the southern edge of the plate the mid-ocean ridge separates...
Percent recoveries of anthropogenic organic compounds with and without the addition of ascorbic acid to preserve finished-water samples containing free chlorine, 2004-10
Joshua F. Valder, Gregory C. Delzer, David A. Bender, Curtis V. Price
2011, Open-File Report 2011-1295
This report presents finished-water matrix-spike recoveries of 270 anthropogenic organic compounds with and without the addition of ascorbic acid to preserve water samples containing free chlorine. Percent recoveries were calculated using analytical results from a study conducted during 2004-10 for the National Water-Quality Assessment (NAWQA) Program of the U.S. Geological...
Teratogenic efects of injected methylmercury on avian embryos
Gary Heinz, David J. Hoffman, Jon D. Klimstra, Katherine R. Stebbins, Shannon L. Kondrad, Carol A. Erwin
2011, Environmental Toxicology and Chemistry (30) 1593-1598
Controlled laboratory studies with game farm mallards (Anas platyrhynchos) and chickens (Gallus gallus) have demonstrated that methylmercury can cause teratogenic effects in birds, but studies with wild species of birds are lacking. To address this need, doses of methylmercury chloride were injected into the eggs of 25 species of birds,...
Temporal variation in bird and resource abundance across an elevational gradient in Hawaii
Patrick J. Hart, Bethany L. Woodworth, Richard J. Camp, Kathryn G. Turner, Katherine McClure, Katherine Goodall, Carlene Henneman, Caleb Spiegel, Jaymi Lebrun, Erik Tweed, Michael Samuel
2011, The Auk (128) 113-126
We documented patterns of nectar availability and nectarivorous bird abundance over ~3 years at nine study sites across an 1,800-m elevational gradient on Hawaii Island to investigate the relationship between resource variation and bird abundance. Flower density (flowers ha-1) and nectar energy content were measured across the gradient for the...
Temporal changes in spatial patterns of submersed macrophytes in two impounded reaches of the Upper Mississippi River, USA, 1998-2009
Nathan R. De Jager, Yao Yin
2011, River Systems (19) 35-47
We examined temporal changes in spatial patterns of submersed aquatic macrophytes during a recent three-fold increase in macrophyte abundance and in response to the cumulative effects of management actions (island construction and water level management) and changes in regional environmental conditions (turbidity) in two navigation pools of the Upper Mississippi...
Temporal observations of bright soil exposures at Gusev crater, Mars
M.S. Rice, J.F. Bell III, E.A. Cloutis, J.J. Wray, Kenneth E. Herkenhoff, R. Sullivan, J. R. Johnson, R.B. Anderson
2011, Journal of Geophysical Research (116)
The Mars Exploration Rover Spirit has discovered bright soil deposits in its wheel tracks that previously have been confirmed to contain ferric sulfates and/or opaline silica. Repeated Pancam multispectral observations have been acquired at four of these deposits to monitor spectral and textural changes over time during exposure to Martian...
Tamarisk biocontrol using tamarisk beetles: Potential consequences for riparian birds in the southwestern United States
Eben H. Paxton, Tad C. Theimer, Mark K. Sogge
2011, The Condor (113) 255-265
The tamarisk beetle (Diorhabda spp.), a non-native biocontrol agent, has been introduced to eradicate tamarisk (Tamarix spp.), a genus of non-native tree that has become a dominant component of riparian woodlands in the southwestern United States. Tamarisk beetles have the potential to spread widely and defoliate large expanses of tamarisk...
Oxidative dissolution of biogenic uraninite in groundwater at Old Rifle, CO
Kate M. Campbell, Harish Veeramani, Kai-Uwe Ulrich, Lisa Y. Blue, Dianiel E. Giammar, Rizlan Bernier-Latmani, Joanne E. Stubbs, Elena Suvorova, Steve Yabusaki, Juan S. Lezama-Pacheco, Apurva Mehta, Philip E. Long, John R. Bargar
2011, Environmental Science & Technology (45) 8748-8754
Reductive bioremediation is currently being explored as a possible strategy for uranium-contaminated aquifers such as the Old Rifle site (Colorado). The stability of U(IV) phases under oxidizing conditions is key to the performance of this procedure. An in situ method was developed to study oxidative dissolution of biogenic uraninite (UO2),...
Nitrate in the Mississippi River and its tributaries, 1980 to 2008: Are we making progress?
Lori A. Sprague, Robert M. Hirsch, Brent T. Aulenbach
2011, Environmental Science & Technology (45) 7209-7216
Changes in nitrate concentration and flux between 1980 and 2008 at eight sites in the Mississippi River basin were determined using a new statistical method that accommodates evolving nitrate behavior over time and produces flow-normalized estimates of nitrate concentration and flux that are independent of random variations in streamflow. The...
Testing coral-based tropical cyclone reconstructions: An example from Puerto Rico
K. Halimeda Kilbourne, Ryan P. Moyer, Terrence M. Quinn, Andrea G. Grottoli
2011, Palaeogeography, Palaeoclimatology, Palaeoecology (307) 90-97
Complimenting modern records of tropical cyclone activity with longer historical and paleoclimatological records would increase our understanding of natural tropical cyclone variability on decadal to centennial time scales. Tropical cyclones produce large amounts of precipitation with significantly lower δ18O values than normal precipitation, and hence may be geochemically identifiable as...
Historical catch, age structure, sizes, and relative growth for an introduced population of blue catfish in Lake Oconee, GA
Cecil A. Jennings, Michael D. Homer Jr.
Paul H. Michaletz, Vincent H. Travnichek, editor(s)
2011, Conference Paper, Conservation, ecololgy, and management of catfish: The second international symposium. American Fisheries Society Symposium 77
No abstract available....
U.S. Geological Survey Karst Interest Group Proceedings, Fayetteville, Arkansas, April 26-29, 2011
Eve L. Kuniansky, editor(s)
2011, Scientific Investigations Report 2011-5031
Karst aquifer systems are present throughout parts of the United States and some of its territories and are developed in carbonate rocks (primarily limestone and dolomite) that span the entire geologic time frame. The depositional environments, diagenetic processes, and post-depositional tectonic events that form carbonate rock aquifers are varied and...
Soils Data Related to the 1999 FROSTFIRE Burn
K.L. Manies, J.W. Harden, R. Ottmar
2011, Open-File Report 2011-1216
This report describes the sample collection and processing for U.S. Geological Survey efforts at FROSTFIRE, an experimental burn that occurred in Alaska in 1999. Data regarding carbon, water, and energy dynamics pre-fire, during, and post-fire were obtained in this landscape-scale prescribed burn. U.S. Geological Survey investigators measured changes in the...
U.S. Geological Survey 2011 assessment of undiscovered oil and gas resources of the Cook Inlet region, south-central Alaska
Richard G. Stanley, Brenda S. Pierce, David W. Houseknecht
2011, Open-File Report 2011-1237
The U.S. Geological Survey (USGS) has completed an assessment of the volumes of undiscovered, technically recoverable oil and gas resources in conventional and continuous accumulations in Cook Inlet. The assessment used a geology-based methodology and results from new scientific research by the USGS and the State of Alaska, Department of...
Gravity data from the San Pedro River Basin, Cochise County, Arizona
Jeffrey R. Kennedy, Daniel Winester
2011, Open-File Report 2011-1287
The U.S. Geological Survey, Arizona Water Science Center in cooperation with the National Oceanic and Atmospheric Administration, National Geodetic Survey has collected relative and absolute gravity data at 321 stations in the San Pedro River Basin of southeastern Arizona since 2000. Data are of three types: observed gravity values and...
Trends and causes of historical wetland loss, Sabine National Wildlife Refuge, southwest Louisiana
Julie Bernier, Robert A. Morton, Kyle W. Kelso
2011, Open-File Report 2011-1169
Prior U.S. Geological Survey studies (Open-File Reports 2005-1216 and 2009-1158) examined historical land- and water-area changes and estimated magnitudes of land subsidence and erosion at 10 wetland sites in the Mississippi River delta plain. The present study extends that work by analyzing interior wetland loss and relative magnitudes of subsidence...
Summary of hydrologic testing of the Floridan aquifer system at Fort Stewart, Georgia
Gerard Gonthier
2011, Open-File Report 2011-1020
Two test wells were completed at Fort Stewart, GA, in January and February 2010 to investigate the potential of using the Lower Floridan aquifer as a source of water to satisfy anticipated increases in water use. One well was completed in the Lower Floridan aquifer at a depth of 1,255...
A survey of U.S. Fish and Wildlife Service employees regarding topics for distance education-Summary report to respondents
Joan M. Ratz, Rudy M. Shuster, Ann M. Marcy
2011, Open-File Report 2011-1021
This report provides a summary of responses to the questions included in the U.S. Fish and Wildlife Service (FWS) National Conservation Training Center (NCTC) Distance Education survey conducted from January 26, 2010, to February 8, 2010. The survey included questions for two studies sponsored by the Division of Education Outreach...
Borehole geophysical and flowmeter data for eight boreholes in the vicinity of Jim Woodruff Lock and Dam, Lake Seminole, Jackson County, Florida
John S. Clarke, Michael D. Hamrick, O. Gary Holloway
2011, Open-File Report 2011-1254
Borehole geophysical logs and flowmeter data were collected in April 2011 from eight boreholes to identify the depth and orientation of cavernous zones within the Miocene Tampa Limestone in the vicinity of Jim Woodruff Lock and Dam in Jackson County, Florida. These data are used to assess leakage near the...
Water-quality conditions near the confluence of the Snake and Boise Rivers, Canyon County, Idaho
Molly S. Wood, Alexandra Etheridge
2011, Scientific Investigations Report 2011-5217
Total Maximum Daily Loads (TMDLs) have been established under authority of the Federal Clean Water Act for the Snake River-Hells Canyon reach, on the border of Idaho and Oregon, to improve water quality and preserve beneficial uses such as public consumption, recreation, and aquatic habitat. The TMDL sets targets for...
