GFDL's ESM2 global coupled climate-carbon Earth System Models. Part I: physical formulation and baseline simulation characteristics
John P. Dunne, Jasmin G. John, Alistair J. Adcroft, Stephen M. Griffies, Robert W. Hallberg, Elena Shevalikova, Ronald J. Stouffer, William Cooke, Krista A. Dunne, Matthew J. Harrison, John P. Krasting, Sergey L. Malyshev, P. C. D. Milly, Peter J. Phillipps, Lori A. Sentman, Bonita L. Samuels, Michael J. Spelman, Michael Winton, Andrew T. Wittenberg, Niki Zadeh
2012, Journal of Climate (25) 6646-6665
We describe the physical climate formulation and simulation characteristics of two new global coupled carbon-climate Earth System Models, ESM2M and ESM2G. These models demonstrate similar climate fidelity as the Geophysical Fluid Dynamics Laboratory's previous CM2.1 climate model while incorporating explicit and consistent carbon dynamics. The two models differ exclusively in...
Coal-tar-based pavement sealcoat and PAHs: implications for the environment, human health, and stormwater management
Barbara Mahler, Peter C. Van Metre, Judy L. Crane, Alison W. Watts, Mateo Scoggins, E. Spencer Williams
2012, Environmental Science & Technology (46) 3039-3045
Coal-tar-based sealcoat products, widely used in the central and eastern U.S. on parking lots, driveways, and even playgrounds, are typically 20−35% coal-tar pitch, a known human carcinogen that contains about 200 polycyclic aromatic hydrocarbon (PAH) compounds. Research continues to identify environmental compartments—including stormwater runoff, lake sediment, soil, house dust, and...
Probability and volume of potential postwildfire debris flows in the 2012 High Park Burn Area near Fort Collins, Colorado
Kristine L. Verdin, Jean A. Dupree, John G. Elliott
2012, Open-File Report 2012-1148
This report presents a preliminary emergency assessment of the debris-flow hazards from drainage basins burned by the 2012 High Park fire near Fort Collins in Larimer County, Colorado. Empirical models derived from statistical evaluation of data collected from recently burned basins throughout the intermountain western United States were used to...
Map showing extent of glaciation in the Eagle quadrangle, east-central Alaska
Florence R. Weber, Frederic H. Wilson
2012, Open-File Report 2012-1138
This map covers the Eagle 1:250,000-scale quadrangle in the northeastern part of the Yukon-Tanana Upland in Alaska. It shows the extent of five major glacial advances, former glacial lakes, and present fragmented terrace deposits related to the advances. The Yukon-Tanana Upland is an area of about 116,550 km2 between the...
Preliminary surficial geologic map of the Newberry Springs 30' x 60' quadrangle, California
G. A. Phelps, D. R. Bedford, D. J. Lidke, D. M. Miller, K. M. Schmidt
2012, Open-File Report 2011-1044
The Newberry Springs 30' x 60' quadrangle is located in the central Mojave Desert of southern California. It is split approximately into northern and southern halves by I-40, with the city of Barstow at its western edge and the town of Ludlow near its eastern edge. The map area spans...
Processes affecting geochemistry and contaminant movement in the middle Claiborne aquifer of the Mississippi embayment aquifer system
Brian G. Katz, James A. Kingsbury, Heather L. Welch, Roland W. Tollett
2012, Environmental Earth Sciences (65) 1759-1780
Groundwater chemistry and tracer-based age data were used to assess contaminant movement and geochemical processes in the middle Claiborne aquifer (MCA) of the Mississippi embayment aquifer system. Water samples were collected from 30 drinking-water wells (mostly domestic and public supply) and analyzed for nutrients, major ions, pesticides, volatile organic compounds...
Geohydrology of Big Bear Valley, California: phase 1--geologic framework, recharge, and preliminary assessment of the source and age of groundwater
Lorraine E. Flint, Justin Brandt, Allen H. Christensen, Alan L. Flint, Joseph Hevesi, Robert Jachens, Justin T. Kulongoski, Peter Martin, Michelle Sneed
2012, Scientific Investigations Report 2012-5100
The Big Bear Valley, located in the San Bernardino Mountains of southern California, has increased in population in recent years. Most of the water supply for the area is pumped from the alluvial deposits that form the Big Bear Valley groundwater basin. This study was conducted to better understand the...
Estimating the Cumulative Ecological Effect of Local Scale Landscape Changes in South Florida
Dianna M. Hogan, William Labiosa, Leonard Pearlstine, David Hallac, David Strong, Paul Hearn, Richard Bernknopf
2012, Environmental Management (49) 502-515
Ecosystem restoration in south Florida is a state and national priority centered on the Everglades wetlands. However, urban development pressures affect the restoration potential and remaining habitat functions of the natural undeveloped areas. Land use (LU) planning often focuses at the local level, but a better understanding of the cumulative...
Geology along Mosca Pass Trail, Great Sand Dunes National Park and Preserve, Colorado
David A. Lindsey, Terry L. Klein, Andrew Valdez, Robert J. Webster
2012, Circular 1374
Mosca Pass Trail takes the hiker on a journey into the Earth's crust. Here you can see the results of tremendous tectonic forces that bend and tear rocks apart and raise mountain ranges. The trail begins near the Sangre de Cristo fault, which separates the Sangre de Cristo Range from...
Surficial geologic map of the Ivanpah 30' x 60' quadrangle, San Bernardino County, California, and Clark County, Nevada
David M. Miller
2012, Scientific Investigations Map 3206
This map was prepared as part of a suite of surficial geologic maps covering the northern Mojave Desert to investigate neotectonic features and map soils of relevance for ecological properties. The map covers an area of the eastern Mojave Desert that includes the Cinder Cones, Cima Dome, Ivanpah Valley, and...
Reflections on our Model Validation editorial
John D. Bredehoeft, Leonard F. Konikow
2012, Ground Water (50) 493-495
This reprinted editorial from 1993 helps to celebrate the legacy of ideas that have influenced generations of hydrogeologists. Drs. Bredehoeft and Konikow kindly provided the following reflections on their editorial....
Transtensional deformation and structural control of contiguous but independent magmatic systems: Mono-Inyo Craters, Mammoth Mountain, and Long Valley Caldera, California
P. Riley, B. Tikoff, Wes Hildreth
2012, Geosphere (8) 740-751
The Long Valley region of eastern California (United States) is the site of abundant late Tertiary–present magmatism, including three geochemically distinct stages of magmatism since ca. 3 Ma: Mammoth Mountain, the Mono-Inyo volcanic chain, and Long Valley Caldera. We propose two tectonic models, one explaining the Mammoth Mountain–Mono-Inyo magmatism and...
A conceptual model of the hydrogeologic framework, geochemistry, and groundwater-flow system of the Edwards-Trinity and related aquifers in the Pecos County region, Texas
Johnathan R. Bumgarner, Gregory P. Stanton, Andrew Teeple, Jonathan V. Thomas, Natalie A. Houston, Jason Payne, MaryLynn Musgrove
2012, Scientific Investigations Report 2012-5124
A conceptual model of the hydrogeologic framework, geochemistry, and groundwater-flow system of the Edwards-Trinity and related aquifers, which include the Pecos Valley, Igneous, Dockum, Rustler, and Capitan Reef aquifers, was developed as the second phase of a groundwater availability study in the Pecos County region in west Texas. The first...
Groundwater flow and water budget in the surficial and Floridan aquifer systems in east-central Florida
Nicasio Sepulveda, Claire R. Tiedeman, Andrew M. O’Reilly, Jeffery B. Davis, Patrick Burger
2012, Open-File Report 2012-1132
A numerical transient model of the surficial and Floridan aquifer systems in east-central Florida was developed to (1) increase the understanding of water exchanges between the surficial and the Floridan aquifer systems, (2) assess the recharge rates to the surficial aquifer system from infiltration through the unsaturated zone and (3)...
Chesapeake Bay Watershed - Protecting the Chesapeake Bay and its rivers through science, restoration, and partnership
Water Resources Division, U.S. Geological Survey
2012, General Information Product 142
The Chesapeake Bay, the Nation's largest estuary, has been degraded due to the impact of human-population increase, which has doubled since 1950, resulting in degraded water quality, loss of habitat, and declines in populations of biological communities. Since the mid-1980s, the Chesapeake Bay Program (CBP), a multi-agency partnership which includes...
Brook trout movement in response to temperature, flow, and thermal refugia within a complex Appalachian riverscape
J. Todd Petty, Jeff L. Hansbarger, Brock M. Huntsman, Patricia M. Mazik
2012, Transactions of the American Fisheries Society (141) 1060-1073
We quantified movements of brook trout Salvelinus fontinalis and brown trout Salmo trutta in a complex riverscape characterized by a large, open-canopy main stem and a small, closed-canopy tributary in eastern West Virginia, USA. Our objectives were to quantify the overall rate of trout movement and relate movement behaviors to...
Characterization of intrabasin faulting and deformation for earthquake hazards in southern Utah Valley, Utah, from high-resolution seismic imaging
William J. Stephenson, Jack K. Odum, Robert A. Williams, John H. McBride, Iris Tomlinson
2012, Bulletin of the Seismological Society of America (102) 524-540
We conducted active and passive seismic imaging investigations along a 5.6-km-long, east–west transect ending at the mapped trace of the Wasatch fault in southern Utah Valley. Using two-dimensional (2D) P-wave seismic reflection data, we imaged basin deformation and faulting to a depth of 1.4 km and developed a detailed interval...
Geologic cross section C-C' through the Appalachian basin from Erie County, north-central Ohio, to the Valley and Ridge province, Bedford County, south-central Pennsylvania
Robert T. Ryder, Michael H. Trippi, Christopher S. Swezey, Robert D. Crangle Jr., Rebecca S. Hope, Elisabeth L. Rowan, Erika E. Lentz
2012, Scientific Investigations Map 3172
Geologic cross section C-C' is the third in a series of cross sections constructed by the U.S. Geological Survey (USGS) to document and improve understanding of the geologic framework and petroleum systems of the Appalachian basin. Cross section C-C' provides a regional view of the structural and stratigraphic framework of...
Development of computational fluid dynamics--habitat suitability (CFD-HSI) models to identify potential passage--Challenge zones for migratory fishes in the Penobscot River
Alexander J. Haro, Robert W. Dudley, Michael Chelminski
2012, Fact Sheet 2012-3073
A two-dimensional computational fluid dynamics-habitat suitability (CFD–HSI) model was developed to identify potential zones of shallow depth and high water velocity that may present passage challenges for five anadromous fish species in the Penobscot River, Maine, upstream from two existing dams and as a result of the proposed future removal...
Exposure and effects of perfluoroalkyl compounds on tree swallows nesting at Lake Johanna in east central Minnesota, USA
Christine M. Custer, Thomas W. Custer, Heiko L. Schoenfuss, Beth H. Poganski, Laura Solem
2012, Reproductive Toxicology (33) 556-562
Tree swallow (Tachycineta bicolor) samples were collected at a reference lake and a nearby lake (Lake Johanna) in east central Minnesota, USA contaminated with perfluorinated carboxylic and sulfonic acids. Tissues were analyzed for a suite of 13 perfluoroalkyl compounds (PFCs) to quantify exposure and to determine if there was an...
An alternative hypothesis for the mid-Paleozoic Antler orogeny in Nevada
Keith B. Ketner
2012, Professional Paper 1790
A great volume of Mississippian orogenic deposits supports the concept of a mid-Paleozoic orogeny in Nevada, and the existence and timing of that event are not questioned here. The nature of the orogeny is problematic, however, and new ideas are called for. The cause of the Antler orogeny, long ascribed...
Evaluation of 3-trifluoromethyl-4-nitrophenol (TFM) residues following a lampricide treatment as a risk assessment to the endangered piping plover
Michael A. Boogaard, Terrance D. Hubert, Jeffry A. Bernardy, Cheryl A. Kaye, Gregg A. Baldwin
2012, Journal of Great Lakes Research (38) 362-367
To evaluate the risk to the federally endangered piping plover (Charadrius melodus) from exposure to 3-trifluoromethyl-4-nitrophenol (TFM) during a sea lamprey control treatment we collected and analyzed a series of water, sediment, and aquatic invertebrate samples for the presence of TFM before, during, and after treatment of the Little Two...
The 2008 U.S. Geological Survey national seismic hazard models and maps for the central and eastern United States
Mark D. Petersen, Arthur D. Frankel, Stephen C. Harmsen, Charles S. Mueller, Oliver S. Boyd, Nicolas Luco, Russell L. Wheeler, Kenneth S. Rukstales, Kathleen M. Haller
2012, GSA Special Papers (493) 246-257
In this paper, we describe the scientific basis for the source and ground-motion models applied in the 2008 National Seismic Hazard Maps, the development of new products that are used for building design and risk analyses, relationships between the hazard maps and design maps used in building codes, and potential...
A 28,000 year history of vegetation and climate from Lower Red Rock Lake, Centennial Valley, Southwestern Montana, USA
Stephanie Ann Mumma, Cathy Whitlock, Kenneth Pierce
2012, Palaeogeography, Palaeoclimatology, Palaeoecology (326-328) 30-41
A sediment core extending to 28,000 cal yr BP from Lower Red Rock Lake in the Centennial Valley of southwestern Montana provides new information on the nature of full-glacial vegetation as well as a history of late-glacial and Holocene vegetation and climate in a poorly studied region. Prior to 17,000...
Organic geochemistry and petrology of subsurface Paleocene-Eocene Wilcox and Claiborne Group coal beds, Zavala County, Maverick Basin, Texas, USA
Paul C. Hackley, Peter D. Warwick, Robert W. Hook, Hossein Alimi, Maria Mastalerz, Sharon M. Swanson
2012, Organic Geochemistry (46) 137-153
Coal samples from a coalbed methane exploration well in northern Zavala County, Maverick Basin, Texas, were characterized through an integrated analytical program. The well was drilled in February, 2006 and shut in after coal core desorption indicated negligible gas content. Cuttings samples from two levels in the Eocene Claiborne Group...
