Groundwater availability of the Denver Basin aquifer system, Colorado
Suzanne S. Paschke, editor(s)
2011, Professional Paper 1770
The Denver Basin aquifer system is a critical water resource for growing municipal, industrial, and domestic uses along the semiarid Front Range urban corridor of Colorado. The confined bedrock aquifer system is located along the eastern edge of the Rocky Mountain Front Range where the mountains meet the Great...
The Hydrogeology of the San Juan Mountains Chapter 5
Jonathan S. Caine, Anna B. Wilson
Robert Blair, George Bracksieck, editor(s)
2011, Book chapter, The Eastern San Juan Mountains Their Ecology, Geology, and Human History
Knowledge of the occurrence, storage, and flow of groundwater in mountainous regions is limited by the lack of integrated data from wells, streams, springs, and climate. In his comprehensive treatment of the hydrogeology of the San Luis Valley, Huntley (1979) hypothesized that the underlying, fractured volcanic bedrock of the San...
Assessing controls on perched saturated zones beneath the Idaho Nuclear Technology and Engineering Center, Idaho
Benjamin B. Mirus, Kim S. Perkins, John R. Nimmo
2011, Scientific Investigations Report 2011-5222
Waste byproducts associated with operations at the Idaho Nuclear Technology and Engineering Center (INTEC) have the potential to contaminate the eastern Snake River Plain (ESRP) aquifer. Recharge to the ESRP aquifer is controlled largely by the alternating stratigraphy of fractured volcanic rocks and sedimentary interbeds within the overlying vadose zone...
The 25 October 2010 Mentawai tsunami earthquake, from real-time discriminants, finite-fault rupture, and tsunami excitation
Andrew V. Newman, Gavin P. Hayes, Yong Wei, Jaime Convers
2011, Geophysical Research Letters (38)
The moment magnitude 7.8 earthquake that struck offshore the Mentawai islands in western Indonesia on 25 October 2010 created a locally large tsunami that caused more than 400 human causalities. We identify this earthquake as a rare slow‐source tsunami earthquake based on: 1) disproportionately large tsunami waves; 2) excessive...
Testing founder effect speciation: Divergence population genetics of the Spoonbills Platalea regia and Pl. minor (Threskiornithidae, Aves)
Carol K.L. Yeung, Pi-Wen Tsai, R. Terry Chesser, Rong-Chien Lin, Cheng-Te Yao, Xiu-Hua Tian, Shou-Hsien Li
2011, Molecular Biology and Evolution (28) 473-482
Although founder effect speciation has been a popular theoretical model for the speciation of geographically isolated taxa, its empirical importance has remained difficult to evaluate due to the intractability of past demography, which in a founder effect speciation scenario would involve a speciational bottleneck in the emergent species and the...
Spatial capture-recapture models for search-encounter data
J. Andrew Royle, Marc Kery, Jerome Guelat
2011, Methods in Ecology and Evolution (2) 602-611
1. Spatial capture–recapture models make use of auxiliary data on capture location to provide density estimates for animal populations. Previously, models have been developed primarily for fixed trap arrays which define the observable locations of individuals by a set of discrete points. 2. Here, we develop a class of models...
Patterns of morphological variation amongst semifossorial shrews in the highlands of Guatemala, with the description of a new species (Mammalia, Soricomorpha, Soricidae)
Neal Woodman
2011, Zoological Journal of the Linnean Society (163) 1267-1288
Members of the Cryptotis goldmani group of small-eared shrews (Mammalia, Soricomorpha, Soricidae) represent a clade within the genus that is characterized by modifications of the forelimb that include broadened forefeet, elongated and broadened foreclaws, and massive humeri with enlarged processes. These modifications are consistent with greater adaptation to their semifossorial...
Assessment of potential effects of water produced from coalbed natural gas development on macroinvertebrate and algal communities in the Powder River and Tongue River, Wyoming and Montana, 2010
David A. Peterson, Eric G. Hargett, David L. Feldman
2011, Open-File Report 2011-1294
Ongoing development of coalbed natural gas in the Powder River structural basin in Wyoming and Montana led to formation of an interagency aquatic task group to address concerns about the effects of the resulting production water on biological communities in streams of the area. Ecological assessments, made from 2005–08 under...
Results of time-domain electromagnetic soundings in Miami-Dade and southern Broward Counties, Florida
David V. Fitterman, Scott T. Prinos
2011, Open-File Report 2011-1299
Time-domain electromagnetic (TEM) soundings were made in Miami-Dade and southern Broward Counties to aid in mapping the landward extent of saltwater in the Biscayne aquifer. A total of 79 soundings were collected in settings ranging from urban to undeveloped land, with some of the former posing problems of land access...
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...
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...
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...
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...
TOPMODEL simulations of streamflow and depth to water table in Fishing Brook Watershed, New York, 2007-09
Elizabeth A. Nystrom, Douglas A. Burns
2011, Scientific Investigations Report 2011-5190
TOPMODEL, a physically based, variable-source area rainfall-runoff model, was used to simulate streamflow and depth to water table for the period January 2007-September 2009 in the 65.6 square kilometers of Fishing Brook Watershed in northern New York. The Fishing Brook Watershed is located in the headwaters of the Hudson River...
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...
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...
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...
Groundwater conditions in the Brunswick-Glynn County area, Georgia, 2009
Gregory S. Cherry, Michael F. Peck, Jaime A. Painter, Welby L. Stayton
2011, Scientific Investigations Report 2011-5087
The Upper Floridan aquifer is contaminated with saltwater in a 2-square-mile area of downtown Brunswick, Georgia. The presence of this saltwater has limited the development of the groundwater supply in the Glynn County area. Hydrologic, geologic, and water-quality data are needed to effectively manage water resources. Since 1959, the U.S....
Factors influencing riverine fish assemblages in Massachusetts
David S. Armstrong, Todd A. Richards, Sara B. Levin
2011, Scientific Investigations Report 2011-5193
The U.S. Geological Survey, in cooperation with the Massachusetts Department of Conservation and Recreation, Massachusetts Department of Environmental Protection, and the Massachusetts Department of Fish and Game, conducted an investigation of fish assemblages in small- to medium-sized Massachusetts streams. The objective of this study was to determine relations between fish-assemblage...
Estimated hydrologic budgets of kettle-hole ponds in coastal aquifers of southeastern Massachusetts
Donald A. Walter, John P. Masterson
2011, Scientific Investigations Report 2011-5137
Kettle-hole ponds in southeastern Massachusetts are in good hydraulic connection to an extensive coastal aquifer system that includes the Plymouth-Carver aquifer system on the mainland and aquifers underlying Cape Cod. The ponds receive water from, and contribute water to, the underlying glacial aquifer; ponds also receive water from precipitation and...
Derived crop management data for the LandCarbon Project
Gail Schmidt, Shu-Guang Liu, Jennifer Oeding
2011, Open-File Report 2011-1303
The LandCarbon project is assessing potential carbon pools and greenhouse gas fluxes under various scenarios and land management regimes to provide information to support the formulation of policies governing climate change mitigation, adaptation and land management strategies. The project is unique in that spatially explicit maps of annual land cover...
Assessing the vulnerability of public-supply wells to contamination—Edwards aquifer near San Antonio, Texas
Martha L. Jagucki, MaryLynn Musgrove, Richard J. Lindgren, Lynne Fahlquist, Sandra M. Eberts
2011, Fact Sheet 2011-3142
This fact sheet highlights findings from the vulnerability study of a public-supply well field in San Antonio, Texas. The well field consists of six production wells that tap the Edwards aquifer. Typically, one or two wells are pumped at a time, yielding an average total of 20-21 million gallons per...
