Magnetotelluric survey to locate the Archean-Proterozoic suture zone in the northeastern Great Basin, Nevada, Utah, and Idaho
Jay A. Sampson, Brian D. Rodriguez
2013, Open-File Report 2013-1252
North-central Nevada contains a large amount of gold in linear belts, the origin of which is not fully understood. During July 2008, September 2009, and August 2010, the U.S. Geological Survey, as part of the Assessment Techniques for Concealed Mineral Resources project, collected twenty-three magnetotelluric soundings along two profiles in...
Using isotopes for design and monitoring of artificial recharge systems
International Atomic Energy Agency
2013, IAEA TECDOC 1723
Over the past years, the IAEA has provided support to a number of Member States engaged in the implementation of hydrological projects dealing with the design and monitoring of artificial recharge ( A R ) systems, primarily situated in arid and semiarid regions. AR is defined as any engineered system...
North America
Mark D. Schwartz, Elisabeth G. Beaubien, Theresa Crimmins, Jake Weltzin
Mark D. Schwartz, editor(s)
2013, Book chapter, Phenology: An integrative environmental science
Plant phenological observations and networks in North America have been largely local and regional in extent until recent decades. In the USA, cloned plant monitoring networks were the exception to this pattern, with data collection spanning the late 1950s until approximately the early 1990s. Animal observation networks, especially for birds...
Surface water quality in streams and rivers: Scaling, and climate change
John Loperfido
2013, Book chapter, Comprehensive water quality and purification
This chapter explores spatial and temporal scaling and the impact of climate change on four basic water quality parameters: temperature, pH, dissolved oxygen, and suspended sediment. An introduction describing the conditions and changes in these water quality parameters is presented. Temporal scaling of water quality parameters is discussed on diel...
Estimating nitrate concentrations in groundwater at selected wells and springs in the surficial aquifer system and Upper Floridan aquifer, Dougherty Plain and Marianna Lowlands, Georgia, Florida, and Alabama, 2002-50
Christy A. Crandall, Brian G. Katz, Marian P. Berndt
2013, Scientific Investigations Report 2013-5150
Groundwater from the surficial aquifer system and Upper Floridan aquifer in the Dougherty Plain and Marianna Lowlands in southwestern Georgia, northwestern Florida, and southeastern Alabama is affected by elevated nitrate concentrations as a result of the vulnerability of the aquifer, irrigation water-supply development, and intensive agricultural land use. The region...
Bedrock geologic and joint trend map of the Pinardville quadrangle, Hillsborough County, New Hampshire
William C. Burton, Thomas R. Armstrong
2013, Open-File Report 2013-1027
The bedrock geology of the Pinardville quadrangle includes the Massabesic Gneiss Complex, exposed in the core of a regional northeast-trending anticlinorium, and highly deformed metasedimentary rocks of the Rangeley Formation, exposed along the northwest limb of the anticlinorium. Both formations were subjected to high-grade metamorphism and partial melting: the Rangeley...
Uniform California earthquake rupture forecast, version 3 (UCERF3): the time-independent model
Edward H. Field, Glenn P. Biasi, Peter Bird, Timothy E. Dawson, Karen R. Felzer, David D. Jackson, Kaj M. Johnson, Thomas H. Jordan, Christopher Madden, Andrew J. Michael, Kevin R. Milner, Morgan T. Page, Thomas Parsons, Peter M. Powers, Bruce E. Shaw, Wayne R. Thatcher, Ray J. Weldon II, Yuehua Zeng, Working Group on California Earthquake Probabilities
2013, Open-File Report 2013-1165
In this report we present the time-independent component of the Uniform California Earthquake Rupture Forecast, Version 3 (UCERF3), which provides authoritative estimates of the magnitude, location, and time-averaged frequency of potentially damaging earthquakes in California. The primary achievements have been to relax fault segmentation assumptions and to include multifault ruptures,...
The music of earthquakes and Earthquake Quartet #1
Andrew J. Michael
2013, Book chapter, Konrad Smolenski�s S.T.R.H.
Earthquake Quartet #1, my composition for voice, trombone, cello, and seismograms, is the intersection of listening to earthquakes as a seismologist and performing music as a trombonist. Along the way, I realized there is a close relationship between what I do as a scientist and what I do as...
Mercury speciation and mobilization in a wastewater-contaminated groundwater plume
Carl H. Lamborg, Doug B. Kent, Gretchen J. Swarr, Kathleen M. Munson, Tristan Kading, Alison E. O’Connor, Gillian M. Fairchild, Denis R. LeBlanc, Heather A. Wiatrowski
2013, Environmental Science & Technology (47) 13239-13249
We measured the concentration and speciation of mercury (Hg) in groundwater down-gradient from the site of wastewater infiltration beds operated by the Massachusetts Military Reservation, western Cape Cod, Massachusetts. Total mercury concentrations in oxic, mildly acidic, uncontaminated groundwater are 0.5–1 pM, and aquifer sediments have 0.5–1 ppb mercury. The plume...
Geomorphology and groundwater origin of amphitheater-shaped gullies at Fort Gordon, Georgia, 2010-2012
James Landmeyer, John B. Wellborn
2013, Open-File Report 2013-1230
Seven amphitheater-shaped gullies at valley heads in the northern part of Fort Gordon, Georgia, were identified by personnel from Fort Gordon and the U.S. Geological Survey during a field investigation of environmental contamination near the cantonment area between 2008 and 2010. Between 2010 and 2012, the amphitheater-shaped gullies were photographed,...
New host and distributional records for Cryptosporidium sp. (Apicomplexa: Cryptosporidiidae) from lizards (Sauria: Gekkonidae, Scincidae) from the Cook Islands and Vanuatu, South Pacific
Chris T. McAllister, Donald W. Duszynski, Robert N. Fisher
2013, Comparative Parasitology (80) 297-300
Between 1991 and 1993, 295 lizards, comprising 21 species in 2 families (Gekkonidae, Scincidae) from the Cook Islands, Fiji, Palau, Takapoto, and Vanuatu in the South Pacific, were examined for Cryptosporidium oocysts. Only 6 lizards (2%) were found to be passing Cryptosporidium oocysts in their feces, including 2 of 30...
The effects of artificial recharge on groundwater levels and water quality in the west hydrogeologic unit of the Warren subbasin, San Bernardino County, California
Christina L. Stamos, Peter Martin, Rhett R. Everett, John A. Izbicki
2013, Scientific Investigations Report 2013-5088
Between the late 1940s and 1994, groundwater levels in the Warren subbasin, California, declined by as much as 300 feet because pumping exceeded sparse natural recharge. In response, the local water district, Hi-Desert Water District, implemented an artificial-recharge program in early 1995 using imported water from the California State Water...
The 3D Elevation Program: summary for California
William J. Carswell Jr.
2013, Fact Sheet 2013-3056
Elevation data are essential to a broad range of applications, including forest resources management, wildlife and habitat management, national security, recreation, and many others. For the State of California, elevation data are critical for infrastructure and construction management; natural resources conservation; flood risk management; wildfire management, planning, and response; agriculture...
Geologic map of the Mount Sherman 7.5' quadrangle, Lake and Park Counties, Colorado
Robert G. Bohannon, Chester A. Ruleman
2013, Scientific Investigations Map 3271
The Mount Sherman 7.5- minute quadrangle is located along the crest of the Mosquito Range in between Leadville and Fairplay, Colorado. There are eleven 13,000-foot peaks and one fourteener, Mount Sherman, within the quadrangle. General elevations range from 10,400–14,036 feet (3,200–4,278 meters). The western half of the quadrangle primarily consists...
Genetics, recruitment, and migration patterns of Arctic Cisco (Coregonus autumnalis) in the Colville River, Alaska and Mackenzie River, Canada
Christian E. Zimmerman, Andrew M. Ramey, S. Turner, Franz J. Mueter, S. Murphy, Jennifer L. Nielsen
2013, Polar Biology (36) 1543-1555
Arctic cisco Coregonus autumnalis have a complex anadromous life history, many aspects of which remain poorly understood. Some life history traits of Arctic cisco from the Colville River, Alaska, and Mackenzie River basin, Canada, were investigated using molecular genetics, harvest data, and otolith microchemistry. The Mackenzie hypothesis, which suggests that...
Crustal-scale recycling in caldera complexes and rift zones along the Yellowstone hotspot track: O and Hf isotopic evidence in diverse zircons from voluminous rhyolites of the Picabo volcanic field, Idaho
Dana L. Drew, Ilya N. Bindeman, Kathryn E. Watts, Axel K. Schmitt, Bin Fu, Michael McCurry
2013, Earth and Planetary Science Letters (381) 63-77
Rhyolites of the Picabo volcanic field (10.4–6.6 Ma) in eastern Idaho are preserved as thick ignimbrites and lavas along the margins of the Snake River Plain (SRP), and within a deep (>3 km) borehole near the central axis of the Yellowstone hotspot track. In this study we present new O...
Spatial, seasonal, and source variability in the stable oxygen and hydrogen isotopic composition of tap waters throughout the USA
Jurate M. Landwehr, Tyler B. Coplen, David W. Stewart
2013, Hydrological Processes
To assess spatial, seasonal, and source variability in stable isotopic composition of human drinking waters throughout the entire USA, we have constructed a database of δ18O and δ2H of US tap waters. An additional purpose was to create a publicly available dataset useful for evaluating the forensic applicability of these...
Animal migration and risk of spread of viral infections
Diann J. Prosser, Jessica L. Nagel, John Y. Takekawa
Sunit K. Singh, editor(s)
2013, Book chapter, Viral infections and global change
The potential contribution of migration towards the spread of disease is as varied as the ecology of the pathogens themselves and their host populations. This chapter outlines multiple examples of viral diseases in animal populations and their mechanisms of viral spread. Many species of insects, mammals, fish, and birds exhibit...
Factors controlling floc settling velocity along a longitudinal estuarine transect
A.J. Manning, David H. Schoellhamer
Patrick L. Barnard, Bruce E. Jaffe, David H. Schoellhamer, editor(s)
2013, Marine Geology (345) 266-280
A 147 km longitudinal transect of flocculated cohesive sediment properties in San Francisco Bay (SFB) was conducted on June 17th, 2008. Our aim was to determine the factors that control floc settling velocity along the longitudinal axis of the estuary. The INSSEV-LF video system was used to measure floc diameters...
Structured decision making
Michael C. Runge, J. Barry Grand, Michael S. Mitchell
Paul R. Krausman, James W. III Cain, editor(s)
2013, Book chapter, Wildlife management and conservation: Contemporary principles and practices
Wildlife management is a decision-focused discipline. It needs to integrate traditional wildlife science and social science to identify actions that are most likely to achieve the array of desires society has surrounding wildlife populations. Decision science, a vast field with roots in economics, operations research, and psychology, offers a rich...
Groundwater ages and mixing in the Piceance Basin natural gas province, Colorado
Peter B. McMahon, Judith C. Thomas, Andrew G. Hunt
2013, Environmental Science & Technology (47) 13250-13257
Reliably identifying the effects of energy development on groundwater quality can be difficult because baseline assessments of water quality completed before the onset of energy development are rare and because interactions between hydrocarbon reservoirs and aquifers can be complex, involving both natural and human processes. Groundwater age and mixing data...
A landscape-based assessment of climate change vulnerability for all native Hawaiian plants
Lucas B. Fortini, Jonathan Price, James Jacobi, Adam Vorsino, Jeff Burgett, Kevin W. Brinck, Fred Amidon, Steve Miller, Sam `Ohukani`ohi`a Gon III, Gregory Koob, Eben H. Paxton
2013, Report, Hawaii Cooperative Studies Unit Technical Report
In Hawaiʽi and elsewhere, research efforts have focused on two main approaches to determine the potential impacts of climate change on individual species: estimating species vulnerabilities and projecting responses of species to expected changes. We integrated these approaches by defining vulnerability as the inability of species to exhibit any of...
Comparison of sediment supply to San Francisco Bay from watersheds draining the Bay Area and the Central Valley of California
L.J. McKee, M. Lewicki, David H. Schoellhamer, Neil K. Ganju
Patrick L. Barnard, Bruce E. Jaffe, David H. Schoellhamer, editor(s)
2013, Marine Geology (345) 47-62
Quantifying suspended sediment loads is important for managing the world's estuaries in the context of navigation, pollutant transport, wetland restoration, and coastal erosion. To address these needs, a comprehensive analysis was completed on sediment supply to San Francisco Bay from fluvial sources. Suspended sediment, optical backscatter, velocity data near the...
Climate-change impacts on ecological systems: Introduction to a US assessment
Nancy B. Grimm, Michelle D Staudinger, Amanda Staudt, Shawn L. Carter, F. Stuart Chapin III, Peter Kareiva, Mary Ruckelshaus, Bruce A. Stein
2013, Frontiers in Ecology and the Environment (11) 456-464
As part of the 2014 US National Climate Assessment, over 60 subject‐matter experts from government agencies, academia, nongovernmental organizations, and the private sector assessed the current and projected impacts of climate change on ecosystems, biodiversity, and ecosystem services. Here, we introduce and provide context for the papers included in this...
Dredging and contaminant exposure to tree swallows nesting on the upper Mississippi River
Thomas W. Custer, Paul M. Dummer, Christine M. Custer, David Warburton
2013, Environmental Monitoring and Assessment (185) 9043-9053
n 2008 and 2009, dredge material from the Mississippi River in Pool 8 south of Brownsville, Minnesota was used to construct nearby islands. Chemical analysis of sediment in 2001 and 2002 in the area to be dredged indicated detectable concentrations of organic and inorganic contaminants. Tree swallows (Tachycineta bicolor), whose...
