Stress, deformation, conservation, and rheology: a survey of key concepts in continuum mechanics
J. J. Major
2013, Book chapter, Mountain and Hillslope Geomorphology: Volume 7 in Treatise on Geomorphology
This chapter provides a brief survey of key concepts in continuum mechanics. It focuses on the fundamental physical concepts that underlie derivations of the mathematical formulations of stress, strain, hydraulic head, pore-fluid pressure, and conservation equations. It then shows how stresses are linked to strain and rates of distortion through...
Archive of U.S. Geological Survey selected single-beam bathymetry datasets, 1969-2000
Heather A. Schreppel, Carolyn H. Degnan, Shawn V. Dadisman, Dan R. Metzger
2013, Data Series 757
New national programs, as well as natural and man-made disasters, have raised awareness about the need to find new and improved ways to share information about the coastal and marine environment with a wide-ranging public audience. The U.S. Geological Survey (USGS) Coastal and Marine Geology Program (CMGP) has begun a...
Geodatabase and characteristics of springs within and surrounding the Trinity aquifer outcrops in northern Bexar County, Texas, 2010--11
Allan K. Clark, Diana E. Pedraza, Robert R. Morris, Travis J. Garcia
2013, Data Series 750
The U.S. Geological Survey, in cooperation with the Trinity Glen Rose Groundwater Conservation District, the Edwards Aquifer Authority, and the San Antonio River Authority, developed a geodatabase of springs within and surrounding the Trinity aquifer outcrops in a 331-square-mile study area in northern Bexar County, Texas. The data used to...
Lateglacial and Holocene climate, disturbance and permafrost peatland dynamics on the Seward Peninsula, western Alaska
Stephanie D. Hunt, Zicheng Yu, Miriam C. Jones
2013, Quaternary Science Reviews (63) 42-58
Northern peatlands have accumulated large carbon (C) stocks, acting as a long-term atmospheric C sink since the last deglaciation. How these C-rich ecosystems will respond to future climate change, however, is still poorly understood. Furthermore, many northern peatlands exist in regions underlain by permafrost, adding to the challenge of projecting...
Exotic plant colonization and occupancy within riparian areas of the Interior Columbia River and Upper Missouri River basins, USA
Robert K. Al-Chokhachy, Andrew M. Ray, Brett B. Roper, Eric Archer
2013, Wetlands (33) 409-420
Exotic plant invasions into riparia often result in shifts in vegetative composition, altered stream function, and cascading effects to biota at multiple scales. Characterizing the distribution patterns of exotic plants is an important step in directing targeted research to identify mechanisms of invasion and potential management strategies. In this study,...
Choices in recreational water quality monitoring: new opportunities and health risk trade-offs
Meredith B. Nevers, Muruleedhara N. Byappanahalli, Richard L. Whitman
2013, Environmental Science & Technology (47) 3073-3081
With the recent release of new recreational water quality monitoring criteria, there are more options for regulatory agencies seeking to protect beachgoers from waterborne pathogens. Included are methods that can reduce analytical time, providing timelier estimates of water quality, but the application of these methods has not been examined at...
Explaining local-scale species distributions: relative contributions of spatial autocorrelation and landscape heterogeneity for an avian assemblage
Brady J. Mattsson, Elise F. Zipkin, Beth Gardner, Peter J. Blank, John R. Sauer, J. Andrew Royle
2013, PLoS ONE (8)
Understanding interactions between mobile species distributions and landcover characteristics remains an outstanding challenge in ecology. Multiple factors could explain species distributions including endogenous evolutionary traits leading to conspecific clustering and endogenous habitat features that support life history requirements. Birds are a useful taxon for examining hypotheses about the relative importance...
Local-area-enhanced, 2.5-meter resolution natural-color and color-infrared satellite-image mosaics of the Nuristan mineral district in Afghanistan
Philip A. Davis, Laura E. Cagney, Scott A. Arko, Michelle L. Harbin
Philip A. Davis, editor(s)
2013, Data Series 709-X
The U.S. Geological Survey (USGS), in cooperation with the U.S. Department of Defense Task Force for Business and Stability Operations, prepared databases for mineral-resource target areas in Afghanistan. The purpose of the databases is to (1) provide useful data to ground-survey crews for use in performing detailed assessments of the...
Assessing movement and sources of mortality of juvenile catostomids using passive integrated transponder tags, Upper Klamath Lake, Oregon - Summary of 2012 effort
Summer M. Burdick
2013, Open-File Report 2013-1062
Executive Summary Survival of juvenile endangered Lost River and shortnose suckers is thought to limit recruitment into the adult populations and ultimately limit the recovery of these species in Upper Klamath Lake, Oregon. Although many hypotheses exist about the sources of mortality, the contribution of each speculated source of mortality has...
Anthropogenic impacts to the recovery of the Mexican gray wolf with a focus on trapping-related incidents
Trey T. Turnbull, James W. Cain III, Gary W. Roemer
2013, Wildlife Society Bulletin (37) 311-318
Concerns regarding the potential negative impacts of regulated furbearer trapping to reintroduced Mexican gray wolves (Canis lupus baileyi), led to an executive order prohibiting trapping in the New Mexico, USA, portion of the Blue Range Wolf Recovery Area. This ban was to last for 6 months and required an evaluation...
Overview of groundwater quality in the Piceance Basin, western Colorado, 1946--2009
J.C. Thomas, P.B. McMahon
2013, Scientific Investigations Report 2012-5198
Groundwater-quality data from public and private sources for the period 1946 to 2009 were compiled and put into a common data repository for the Piceance Basin. The data repository is available on the web at http://rmgsc.cr.usgs.gov/cwqdr/Piceance/index.shtml. A subset of groundwater-quality data from the repository was compiled, reviewed, and checked for...
Potential population-level effects of increased haulout-related mortality of Pacific walrus calves
Mark S. Udevitz, Rebecca L. Taylor, Joel L. Garlich-Miller, Lori T. Quakenbush, Jonathan A. Snyder
2013, Polar Biology (36) 291-298
Availability of summer sea ice has been decreasing in the Chukchi Sea during recent decades, and increasing numbers of Pacific walruses have begun using coastal haulouts in late summer during years when sea ice retreats beyond the continental shelf. Calves and yearlings are particularly susceptible to being crushed during disturbance...
Development and characterization of 21 polymorphic microsatellite markers for the barren-ground shrew, Sorex ugyunak (Mammalia: Sorcidae), through next-generation sequencing, and cross-species amplification in the masked shrew, S. cinereus
Sarah A. Sonsthagen, G. Kevin Sage, Megan C. Fowler, Andrew G. Hope, J.A. Cook, Sandra L. Talbot
2013, Conservation Genetics Resources (5) 315-318
We used next generation shotgun sequencing to develop 21 novel microsatellite markers for the barren-ground shrew (Sorex ugyunak), which were polymorphic among individuals from northern Alaska. The loci displayed moderate allelic diversity (averaging 6.81 alleles per locus) and heterozygosity (averaging 70 %). Two loci deviated from Hardy–Weinberg equilibrium (HWE)...
Evidence that life history characteristics of wild birds influence infection rates and exposure to influenza A viruses
Craig R. Ely, Jeffrey S. Hall, Joel A. Schmutz, John M. Pearce, John Terenzi, James S. Sedinger, S. Ip
2013, PLoS ONE (8)
We report on life history characteristics, temporal, and age-related effects influencing the frequency of occurrence of avian influenza (AI) viruses in four species of migratory geese breeding on the Yukon-Kuskokwim Delta, Alaska. Emperor geese (Chen canagica), cackling geese (Branta hutchinsii), greater white-fronted geese (Anser albifrons), and black brant (Branta bernicla),...
An assessment of hydrothermal alteration in the Santiaguito lava dome complex, Guatemala: implications for dome collapse hazards
Jessica L. Ball, Eliza S. Calder, Bernard E. Hubbard, Marc L. Bernstein
2013, Bulletin of Volcanology (75) 676-676
A combination of field mapping, geochemistry, and remote sensing methods has been employed to determine the extent of hydrothermal alteration and assess the potential for failure at the Santiaguito lava dome complex, Guatemala. The 90-year-old complex of four lava domes has only experienced relatively small and infrequent dome collapses in...
Lead isotope determinations from sulfide mineral occurrences--Russian Far East
Stan E. Church, Nikolai A. Goryachev, Vladimir I. Shpikerman
2013, Data Series 743
The lead isotope database for sulfide deposits and occurrences in the Russian Far East was funded by the Mineral Resources Program, U.S. Geological Survey (USGS) in conjunction with the collaborative studies of mineral resources by the Russian Academy of Sciences and the U. S. Geological Survey (Nokleberg and others, 1996)....
Movements and dive patterns of short-finned pilot whales (Globicephala macrorhynchus) released from a mass stranding in the Florida Keys
Randall S. Wells, Erin M. Fougeres, Arthur G. Cooper, Robert O. Stevens, Micah Brodsky, Robert Lingenfelser, Chris Dold, David C. Douglas
2013, Aquatic Mammals (39) 61-72
Short-finned pilot whales (Globicephala macrorhynchus) are among the most common cetaceans to engage in mass strandings in the southeastern United States. Because these are primarily pelagic, continental shelf-edge animals, much of what is known about this species has derived from mass stranding events. Post-release monitoring via satellite-linked telemetry was conducted...
Local-area-enhanced, 2.5-meter resolution natural-color and color-infrared satellite-image mosaics of the Ghunday-Achin mineral district in Afghanistan, in Davis, P.A, compiler, Local-area-enhanced, high-resolution natural-color and color-infrared satellite-image mosaics of mineral districts in Afghanistan
Philip A. Davis, Scott A. Arko, Michelle L. Harbin
Philip A. Davis, editor(s)
2013, Data Series 709-W
The U.S. Geological Survey (USGS), in cooperation with the U.S. Department of Defense Task Force for Business and Stability Operations, prepared databases for mineral-resource target areas in Afghanistan. The purpose of the databases is to (1) provide useful data to ground-survey crews for use in performing detailed assessments of the...
U.S. Geological Survey science for the Wyoming Landscape Conservation Initiative: 2011 annual report
Zachary H. Bowen, Cameron L. Aldridge, Patrick J. Anderson, Timothy J. Assal, Laura Biewick, Steven W. Blecker, Gregory K. Boughton, Natasha B. Carr, Anna D. Chalfoun, Geneva W. Chong, Melanie L. Clark, Jay E. Diffendorfer, Bradley C. Fedy, Katharine Foster, Steven L. Garman, Stephanie Germaine, Matthew G. Hethcoat, JoAnn Holloway, Collin G. Homer, Matthew J. Kauffman, Douglas Keinath, Natalie Latysh, Daniel J. Manier, Robert R. McDougal, Cynthia P. Melcher, Kirk A. Miller, Jessica Montag, Edward M. Olexa, Christopher J. Potter, Spencer Schell, Sarah L. Shafer, David B. Smith, Lisa L. Stillings, Michael J. Sweat, Michele L. Tuttle, Anna B. Wilson
2013, Open-File Report 2013-1033
This is the fourth report produced by the U.S. Geological Survey (USGS) for the Wyoming Landscape Conservation Initiative (WLCI) to detail annual work activities. In FY2011, there were 37 ongoing, completed, or new projects conducted under the five major multi-disciplinary science and technical-assistance activities: (1) Baseline Synthesis, (2) Targeted Monitoring...
Patterns of social association in the franciscana, Pontoporia blainvillei
Randall S. Wells, Pablo Bordino, David C. Douglas
2013, Marine Mammal Science (29) E520-E528
Little is known from living animals about the social patterns of the franciscana, Pontoporia blainvillei, a small dolphin inhabiting a narrow strip of coastal waters off Argentina, Uruguay, and Brazil. These dolphins tend to be found in small groups, typically composed of two or three individuals (Bordino et al. 1999)....
Use of the Soil and Water Assessment Tool (SWAT) for simulating hydrology and water quality in the Cedar River Basin, Iowa, 2000--10
Kasey J. Hutchinson, Daniel E. Christiansen
2013, Scientific Investigations Report 2013-5002
The U.S. Geological Survey, in cooperation with the Iowa Department of Natural Resources, used the Soil and Water Assessment Tool to simulate streamflow and nitrate loads within the Cedar River Basin, Iowa. The goal was to assess the ability of the Soil and Water Assessment Tool to estimate streamflow and...
Abundance, size distributions and trace-element binding of organic and iron-rich nanocolloids in Alaskan rivers, as revealed by field-flow fractionation and ICP-MS
Bjorn Stolpe, Laodong Guo, Alan M. Shiller, George R. Aiken
2013, Geochimica et Cosmochimica Acta (105) 221-239
Water samples were collected from six small rivers in the Yukon River basin in central Alaska to examine the role of colloids and organic matter in the transport of trace elements in Northern high latitude watersheds influenced by permafrost. Concentrations of dissolved organic carbon (DOC), selected elements (Al, Si, Ca,...
Progress toward establishing a national assessment of water availability and use
William M. Alley, Eric J. Evenson, Nancy L. Barber, Breton W. Bruce, Kevin F. Dennehy, Mary Freeman, Ward O. Freeman, Jeffrey M. Fischer, William B. Hughes, Jonathan G. Kennen, Julie E. Kiang, Kelly O. Maloney, MaryLynn Musgrove, Barbara E. Ralston, Steven Tessler, James P. Verdin
2013, Circular 1384
The Omnibus Public Land Management Act of 2009 (Public Law 111-11) was passed into law on March 30, 2009. Subtitle F, also known as the SECURE Water Act, calls for the establishment of a "national water availability and use assessment program" within the U.S. Geological Survey (USGS). A major driver...
MODIS-informed greenness responsesto daytime land surface temperaturefluctuations and wildfire disturbancesin the Alaskan Yukon River Basin
Zhengxi Tan, Shu-Guang Liu, Calli B. Jenkerson, Jennifer Oeding, Bruce K. Wylie, Jennifer R. Rover, Claudia J. Young
2013, International Journal of Remote Sensing (34) 2187-2199
Pronounced climate warming and increased wildfire disturbances are known to modify forest composition and control the evolution of the boreal ecosystem over the Yukon River Basin (YRB) in interior Alaska. In this study, we evaluate the post-fire green-up rate using the normalized difference vegetation index (NDVI) derived from 250 m...
Predictive occurrence models for coastal wetland plant communities: delineating hydrologic response surfaces with multinomial logistic regression
Gregg A. Snedden, Gregory D. Steyer
2013, Estuarine, Coastal and Shelf Science (118) 11-23
Understanding plant community zonation along estuarine stress gradients is critical for effective conservation and restoration of coastal wetland ecosystems. We related the presence of plant community types to estuarine hydrology at 173 sites across coastal Louisiana. Percent relative cover by species was assessed at each site near the end of...
