Assessment of undiscovered copper resources associated with the Permian Kupferschiefer, Southern Permian Basin, Europe
Michael L. Zientek, Slawomir Oszczepalski, Heather L. Parks, James D. Bliss, Gregor Borg, Stephen E. Box, Paul Denning, Timothy S. Hayes, Volker Spieth, Cliff D. Taylor
2015, Scientific Investigations Report 2010-5090-U
This study synthesizes available information and estimates the location and quantity of undiscovered copper associated with a late Permian bituminous shale, the Kupferschiefer, of the Southern Permian Basin in Europe. The purpose of this study is to (1) delineate permissive areas (tracts) where undiscovered reduced-facies sediment-hosted stratabound copper deposits could...
Concentrations of hormones, pharmaceuticals and other micropollutants in groundwater affected by septic systems in New England and New York
Patrick J. Phillips, Christopher Schubert, Denise M. Argue, Irene J. Fisher, Edward T. Furlong, William T. Foreman, James L. Gray, Ann T. Chalmers
2015, Science of the Total Environment (512-513) 43-54
Septic-system discharges can be an important source of micropollutants (including pharmaceuticals and endocrine active compounds) to adjacent groundwater and surface water systems. Groundwater samples were collected from well networks tapping glacial till in New England (NE) and sandy surficial aquifer New York (NY) during one sampling round in 2011. The...
Development of a HEC-RAS temperature model for the North Santiam River, northwestern Oregon
Adam J. Stonewall, Norman L. Buccola
2015, Open-File Report 2015-1006
A one-dimensional, unsteady streamflow and temperature model (HEC-RAS) of the North Santiam and Santiam Rivers was developed by the U.S. Geological Survey to be used in conjunction with previously developed two-dimensional hydrodynamic water-quality models (CE-QUAL-W2) of Detroit and Big Cliff Lakes upstream of the study area. In conjunction with the...
The effects of sample scheduling and sample numbers on estimates of the annual fluxes of suspended sediment in fluvial systems
Arthur J. Horowitz, Robin T. Clarke, Gustavo Henrique Merten
2015, Hydrological Processes (29) 531-543
Since the 1970s, there has been both continuing and growing interest in developing accurate estimates of the annual fluvial transport (fluxes and loads) of suspended sediment and sediment-associated chemical constituents. This study provides an evaluation of the effects of manual sample numbers (from 4 to 12 year−1) and sample scheduling (random-based,...
Evaluation of selected static methods used to estimate element mobility, acid-generating and acid-neutralizing potentials associated with geologically diverse mining wastes
Philip L. Hageman, Robert R. Seal, Sharon F. Diehl, Nadine M. Piatak, Heather Lowers
2015, Applied Geochemistry (57) 125-139
A comparison study of selected static leaching and acid–base accounting (ABA) methods using a mineralogically diverse set of 12 modern-style, metal mine waste samples was undertaken to understand the relative performance of the various tests. To complement this study, in-depth mineralogical studies were conducted in order to elucidate the relationships...
Mortality estimation from carcass searches using the R-package carcass: a tutorial
Franzi Korner-Nievergelt, Oliver Behr, Robert Brinkmann, Matthew A. Etterson, Manuela M. P. Huso, Daniel Dalthorp, Pius Korner-Nievergelt, Tobias Roth, Ivo Niermann
2015, Wildlife Biology (21) 30-43
This article is a tutorial for the R-package carcass. It starts with a short overview of common methods used to estimate mortality based on carcass searches. Then, it guides step by step through a simple example. First, the proportion of animals that fall into the search area is estimated. Second,...
Distribution and dynamics of mangrove forests of South Asia
Chandra Giri, Jordan Long, Sawaid Abbas, R. Mani Murali, Faisal M. Qamer, Bruce Pengra, David Thau
2015, Journal of Environmental Management (148) 10-111
Mangrove forests in South Asia occur along the tidal sea edge of Bangladesh, India, Pakistan, and Sri Lanka. These forests provide important ecosystem goods and services to the region's dense coastal populations and support important functions of the biosphere. Mangroves are under threat from both natural and anthropogenic stressors; however...
Estimated annual agricultural pesticide use for counties of the conterminous United States, 2008-12
Nancy T. Baker, Wesley W. Stone
2015, Data Series 907
Annual county-level pesticide use was estimated for 423 herbicides, insecticides, and fungicides applied to agricultural crops grown in the conterminous United States during 2008–12. For all States except California, pesticide-use data were compiled from proprietary surveys of farm operations located within U.S. Department of Agriculture Crop Reporting Districts (CRDs). Surveyed...
Elk monitoring in Mount Rainier and Olympic national parks: 2008-2011 synthesis report
Kurt J. Jenkins, Paul C. Griffin, Patricia J. Happe, Mason E. Reid, David J. Vales, Barbara J. Moeller, Michelle Tirhe, Scott McCorquodale, Katherine Beirne, John Boetsch, William Baccus, Bruce C. Lubow
2015, Natural Resource Report NPS/NCCN/NRR - 2015/904
In 2008, the USGS collaborated with the NPS, the Muckleshoot and Puyallup Indian Tribes, and WDFW to develop a protocol tor monitor changes in abundance, population composition, and spatial distribution of elk on summer ranges in MORA and OLYM and winter ranges in OLYM. We developed double-observer sightability (DO-S) models...
A summary of the benthic-invertebrate and fish-community data from streams in the Indianapolis metropolitan area, Indiana, 1981-2012
David C. Voelker, Aubrey R. Bunch, Edward G. Dobrowolski, Megan E. Shoda
2015, Scientific Investigations Report 2014-5225
Intermittently, during 1981–2012, the U.S. Geological Survey sampled sites in the White River and several tributaries in the Indianapolis metropolitan area of Indiana for benthic invertebrates and fish communities. During 1981–87, one study focused on benthic-invertebrate data collection at three sites along the White River. During 1994–96, 21 sites were...
Fluid pressure responses for a Devil's Slide-like system: problem formulation and simulation
Matthew A. Thomas, Keith Loague, Clifford I. Voss
2015, Hydrological Processes (29) 1450-1465
This study employs a hydrogeologic simulation approach to investigate subsurface fluid pressures for a landslide-prone section of the central California, USA, coast known as Devil's Slide. Understanding the relative changes in subsurface fluid pressures is important for systems, such as Devil's Slide, where slope creep can be interrupted by episodic...
Implications of the circumpolar genetic structure of polar bears for their conservation in a rapidly warming Arctic
Elizabeth L. Peacock, Sarah A. Sonsthagen, Martyn E. Obbard, Andrei N. Boltunov, Eric V. Regehr, Nikita Ovsyanikov, Jon Aars, Stephen N. Atkinson, George K. Sage, Andrew G. Hope, Eve Zeyl, Lutz Bachmann, Dorothee Ehrich, Kim T. Scribner, Steven C. Amstrup, Stanislav Belikov, Erik W. Born, Andrew E. Derocher, Ian Stirling, Mitchell K. Taylor, Øystein Wiig, David Paetkau, Sandra L. Talbot
2015, PLoS ONE (10)
We provide an expansive analysis of polar bear (Ursus maritimus) circumpolar genetic variation during the last two decades of decline in their sea-ice habitat. We sought to evaluate whether their genetic diversity and structure have changed over this period of habitat decline, how their current genetic patterns compare with past...
U.S. Geological Survey groundwater toolbox, a graphical and mapping interface for analysis of hydrologic data (version 1.0): user guide for estimation of base flow, runoff, and groundwater recharge from streamflow data
Paul M. Barlow, William L. Cunningham, Tong Zhai, Mark Gray
2015, Techniques and Methods 3-B10
This report is a user guide for the streamflow-hydrograph analysis methods provided with version 1.0 of the U.S. Geological Survey (USGS) Groundwater Toolbox computer program. These include six hydrograph-separation methods to determine the groundwater-discharge (base-flow) and surface-runoff components of streamflow—the Base-Flow Index (BFI; Standard and Modified), HYSEP (Fixed Interval, Sliding...
Data regarding hydraulic fracturing distributions and treatment fluids, additives, proppants, and water volumes applied to wells drilled in the United States from 1947 through 2010
Tanya J. Gallegos, Brian A. Varela
2015, Data Series 868
Comprehensive, published, and publicly available data regarding the extent, location, and character of hydraulic fracturing in the United States are scarce. The objective of this data series is to publish data related to hydraulic fracturing in the public domain. The spreadsheets released with this data series contain derivative datasets aggregated...
Trends in hydraulic fracturing distributions and treatment fluids, additives, proppants, and water volumes applied to wells drilled in the United States from 1947 through 2010: data analysis and comparison to the literature
Tanya J. Gallegos, Brian A. Varela
2015, Scientific Investigations Report 2014-5131
Hydraulic fracturing is presently the primary stimulation technique for oil and gas production in low-permeability, unconventional reservoirs. Comprehensive, published, and publicly available information regarding the extent, location, and character of hydraulic fracturing in the United States is scarce. This national spatial and temporal analysis of data on nearly 1 million...
Coastal Change Processes Project data report for observations near Fire Island, New York, January to April 2012
Brandy N. Armstrong, John C. Warner, Jeffrey H. List, Marinna A. Martini, Ellyn T. Montgomery, George Voulgaris, Peter A. Traykovski
2015, Open-File Report 2014-1159
An oceanographic field study during January through April 2012 investigated processes that control the sediment-transport dynamics near Fire Island, New York. This report describes the project background, field program, instrumentation configuration, and locations of the sensors deploymed. The data collected and supporting meteorological observations are presented as time series plots...
Erratum to: Estimates of vital rates for a declining loggerhead turtle (Caretta caretta) subpopulation: implications for management
Margaret M. Lamont, Ikuko Fujisaki, Raymond R. Carthy
2015, Marine Biology (162) 491-491
Erratum to: Mar Biol (2014) 161:2659–2668 DOI 10.1007/s00227-014-2537-0 The Open Robust Model methods used for analysis in this study were developed by Kendall and Bjorkland (2001) and Kendall (2010). The language used in this manuscript to describe formatting and implementation of data for these analyses was derived heavily from Phillips et...
Central Appalachian basin natural gas database: distribution, composition, and origin of natural gases
Yomayra A. Roman Colon, Leslie F. Ruppert
2015, Open-File Report 2014-1207
The U.S. Geological Survey (USGS) has compiled a database consisting of three worksheets of central Appalachian basin natural gas analyses and isotopic compositions from published and unpublished sources of 1,282 gas samples from Kentucky, Maryland, New York, Ohio, Pennsylvania, Tennessee, Virginia, and West Virginia. The database includes field and reservoir...
Flood-inundation maps and wetland restoration suitability index for the Blue River and selected tributaries, Kansas City, Missouri, and vicinity, 2012
David C. Heimann, Brian P. Kelly, Seth E. Studley
2015, Scientific Investigations Report 2014-5180
Digital flood-inundation maps for a 39.7-mile reach of the Blue River and selected tributaries (Brush Creek, Indian Creek, and Dyke Branch) at Kansas City, Missouri, and vicinity, were created by the U.S. Geological Survey (USGS) in cooperation with the City of Kansas City, Missouri. The flood-inundation maps, accessed through the...
Geological sampling data and benthic biota classification: Buzzards Bay and Vineyard Sound, Massachusetts
Seth D. Ackerman, Adrienne L. Pappal, Emily C. Huntley, Dann S. Blackwood, William C. Schwab
2015, Open-File Report 2014-1221
Sea-floor sample collection is an important component of a statewide cooperative mapping effort between the U.S. Geological Survey (USGS) and the Massachusetts Office of Coastal Zone Management (CZM). Sediment grab samples, bottom photographs, and video transects were collected within Vineyard Sound and Buzzards Bay in 2010 aboard the research vesselConnecticut....
A crustal structure model of the Beaufort-Mackenzie Margin, southern Canada Basin
Gordon N. Oakey, Richard W. Saltus, John W. Shimeld
2015, Conference Paper, OTC Arctic Technology Conference Proceedings
Canada and the United States collaborated in geophysical survey operations in the Amerasia Basin from 2007 to 2011 using the Canadian icebreaker CCGS Louis S. St. Laurent and the US icebreaker USCGC Healy. Over 15000 km of bathymetry, sub-bottom profiles, and 16-channel seismic reflection data were acquired over the Canada...
Robust and resistant semivariogram modelling using a generalized bootstrap
Ricardo A. Olea, E. Pardo-Iguzquiza, P. A. Dowd
2015, Journal of the Southern African Institute of Mining and Metallurgy (115) 37-44
The bootstrap is a computer-intensive resampling method for estimatingthe uncertainty of complex statistical models. We expand on anapplication of the bootstrap for inferring semivariogram parameters andtheir uncertainty. The model fitted to the median of the bootstrap distributionof the experimental semivariogram is proposed as an estimator ofthe semivariogram. The proposed application...
Climatic controls of aboveground net primary production in semi-arid grasslands along a latitudinal gradient portend low sensitivity to warming
Whitney Mowll, Dana M. Blumenthal, Karie Cherwin, Anine Smith, Amy J. Symstad, Lance Vermeire, Scott L. Collins, Melinda D. Smith, Alan K. Knapp
2015, Oecologia (177) 959-969
Although climate models forecast warmer temperatures with a high degree of certainty, precipitation is the primary driver of aboveground net primary production (ANPP) in most grasslands. Conversely, variations in temperature seldom are related to patterns of ANPP. Thus forecasting responses to warming is a challenge, and raises the question: how...
Cokriging of compositional balances including a dimension reduction and retrieval of original units
V. Pawlowsky-Glahn, J. J. Egozcue, Ricardo A. Olea, E Pardo-Igúzquiza
2015, Journal of the Southern African Institute of Mining and Metallurgy (115) 59-72
Compositional data constitutes a special class of quantitative measurements involving parts of a whole. The sample space has an algebraic-geometric structure different from that of real-valued data. A subcomposition is a subset of all possible parts. When compositional data values include geographical locations, they are also regionalized variables. In the...
Foraging habits in a generalist predator: sex and age influence habitat selection and resource use among bottlenose dolphins (Tursiops truncatus)
Sam Rossman, Elizabeth Berens McCabe, Nelio B. Barros, Hasand Gandhi, Peggy H. Ostrom, Craig A. Stricker, Randall S. Wells
2015, Marine Mammal Science (31) 155-168
This study examines resource use (diet, habitat use, and trophic level) within and among demographic groups (males, females, and juveniles) of bottlenose dolphins (Tursiops truncatus). We analyzed the δ13C and δ15N values of 15 prey species constituting 84% of the species found in stomach contents. We used these data to...
