Application of a watershed model (HSPF) for evaluating sources and transport of pathogen indicators in the Chino Basin drainage area, San Bernardino County, California
Joseph A. Hevesi, Lorraine E. Flint, Clinton D. Church, Gregory O. Mendez
2011, Scientific Investigations Report 2009-5219
A watershed model using Hydrologic Simulation Program-FORTRAN (HSPF) was developed for the urbanized Chino Basin in southern California to simulate the transport of pathogen indicator bacteria, evaluate the flow-component and land-use contributions to bacteria contamination and water-quality degradation throughout the basin, and develop a better understanding of the potential effects...
Environmental flow allocation and statistics calculator
Christopher P. Konrad
2011, Open-File Report 2011-1166
The Environmental Flow Allocation and Statistics Calculator (EFASC) is a computer program that calculates hydrologic statistics based on a time series of daily streamflow values. EFASC will calculate statistics for daily streamflow in an input file or will generate synthetic daily flow series from an input file based on rules...
Geochemistry of hydrothermal fluids from the PACMANUS, Northeast Pual and Vienna Woods hydrothermal fields, Manus Basin, Papua New Guinea
Eoghan P. Reeves, Jeffrey S. Seewald, Peter Saccocia, Wolfgang Bach, Paul R. Craddock, Wayne C Shanks, Sean P. Sylva, Emily Walsh, Thomas Pichler, Martin Rosner
2011, Geochimica et Cosmochimica Acta (75) 1088-1123
Processes controlling the composition of seafloor hydrothermal fluids in silicic back-arc or near-arc crustal settings remain poorly constrained despite growing evidence for extensive magmatic–hydrothermal activity in such environments. We conducted a survey of vent fluid compositions from two contrasting sites in the Manus back-arc basin, Papua New Guinea, to examine...
Simulation of the shallow groundwater-flow system near Mole Lake, Forest County, Wisconsin
Michael N. Fienen, Paul F. Juckem, Randall J. Hunt
2011, Scientific Investigations Report 2011-5080
The shallow groundwater system near Mole Lake, Forest County, Wis. was simulated using a previously calibrated regional model. The previous model was updated using newly collected water-level measurements and refinements to surface-water features. The updated model was then used to calculate the area contributing recharge for one existing and two...
Mapping perennial vegetation cover in the Mojave Desert
Cynthia S.A. Wallace
2011, Fact Sheet 2011-3077
Scientists with the U.S. Geological Survey's Western Geographic Science Center have recently created a regional map of perennial vegetation cover for the Mojave Desert. The scientists used existing field data collected for a variety of previous studies and satellite data available for free through USGS archives to create a calibrated...
Diel biogeochemical processes in terrestrial waters
David A. Nimick, Chris Gammons
2011, Chemical Geology (283) 1-2
Many biogeochemical processes in rivers and lakes respond to the solar photocycle and produce persistent patterns of measureable phenomena that exhibit a day–night, or 24-h, cycle. Despite a large body of recent literature, the mechanisms responsible for these diel fluctuations are widely debated, with a growing consensus that combinations...
Three types of gas hydrate reservoirs in the Gulf of Mexico identified in LWD data
Myung Woong Lee, Timothy S. Collett
2011, Book, Proceedings of the 7th International Conference on Gas Hydrates
High quality logging-while-drilling (LWD) well logs were acquired in seven wells drilled during the Gulf of Mexico Gas Hydrate Joint Industry Project Leg II in the spring of 2009. These data help to identify three distinct types of gas hydrate reservoirs: isotropic reservoirs in sands, vertical fractured reservoirs in shale,...
Bedform response to flow variability
Jonathan M. Nelson, Brandy L. Logan, Paul J. Kinzel, Y. Shimizu, S. Giri, R.L. Shreve, S.R. McLean
2011, Earth Surface Processes and Landforms (36) 1938-1947
Laboratory observations and computational results for the response of bedform fields to rapid variations in discharge are compared and discussed. The simple case considered here begins with a relatively low discharge over a flat bed on which bedforms are initiated, followed by a short high-flow period with double the original...
Developing seismogenic source models based on geologic fault data
Kathleen M. Haller, Roberto Basili
2011, Seismological Research Letters (82) 519-525
Calculating seismic hazard usually requires input that includes seismicity associated with known faults, historical earthquake catalogs, geodesy, and models of ground shaking. This paper will address the input generally derived from geologic studies that augment the short historical catalog to predict ground shaking at time scales of tens, hundreds, or...
Conceptualizing and communicating ecological river restoration
Robert B. Jacobson, Jim Berkley
2011, Book chapter, Stream restoration in dynamic fluvial systems
We present a general conceptual model for communicating aspects of river restoration and management. The model is generic and adaptable to most riverine settings, independent of size. The model has separate categories of natural and social-economic drivers, and management actions are envisioned as modifiers of naturally dynamic systems. The model...
Aggregation of estimated numbers of undiscovered deposits: an R-script with an example from the Chu Sarysu Basin, Kazakhtan: Chapter B in Global mineral resource assessment
John H. Schuenemeyer, Michael L. Zientek, Stephen E. Box
2011, Scientific Investigations Report 2010-5090-B
Mineral resource assessments completed by the U.S. Geological Survey during the past three decades express geologically based estimates of numbers of undiscovered mineral deposits as probability distributions. Numbers of undiscovered deposits of a given type are estimated in geologically defined regions. Using Monte Carlo simulations, these undiscovered deposit estimates are...
Modeling hydrodynamics, water temperature, and water quality in the Klamath River upstream of Keno Dam, Oregon, 2006-09
Annett B. Sullivan, Stewart A. Rounds, Michael L. Deas, Jessica R. Asbill, Roy E. Wellman, Marc A. Stewart, Matthew W. Johnston, I. Ertugrul Sogutlugil
2011, Scientific Investigations Report 2011-5105
A hydrodynamic, water temperature, and water-quality model was constructed for a 20-mile reach of the Klamath River downstream of Upper Klamath Lake, from Link River to Keno Dam, for calendar years 2006-09. The two-dimensional, laterally averaged model CE-QUAL-W2 was used to simulate water velocity, ice cover, water temperature, specific conductance,...
Hydrogeophysical investigations at Hidden Dam, Raymond, California
Burke J. Minsley, Bethany L. Burton, Scott Ikard, Michael H. Powers
2011, Journal of Environmental & Engineering Geophysics (16) 145-164
Self-potential and direct current resistivity surveys are carried out at the Hidden Dam site in Raymond, California to assess present-day seepage patterns and better understand the hydrogeologic mechanisms that likely influence seepage. Numerical modeling is utilized in conjunction with the geophysical measurements to predict variably-saturated flow through typical two-dimensional...
White-tailed deer age ratios as herd management and predator impact measures in Pennsylvania
Christopher S. Rosenberry, Andrew S. Norton, Duane R. Diefenbach, Jeannine T. Fleegle, Bret D. Wallingford
2011, Wildlife Society Bulletin (35) 461-468
A review of the Pennsylvania Game Commission's (PGC) deer management program and public concern about predator impacts on deer (Odocoileus virginianus) populations compelled the PGC to investigate the role of age ratios in developing management recommendations. Age ratios, such as proportion of juveniles in the antlerless harvest, may provide an...
Gravity lineaments of the Cocos Plate: Evidence for a thermal contraction crack origin
Marie-Helene Cormier, Kathleen D. Gans, Douglas S. Wilson
2011, Geochemistry Geophysics Geosystems (12)
Lineaments in the gravity field with wavelengths of 100–200 km affect the south-central Pacific. Because they align with absolute plate motion, it has been proposed that they reflect small-scale convection cells beneath the lithosphere that become elongated by basal shear. Alternatively, it was suggested that they reflect channelized flow of...
Amplification and dampening of soil respiration by changes in temperature variability
C.A. Sierra, M. E. Harmon, E. Thomann, S.S. Perakis, H.W. Loescher
2011, Biogeosciences (8) 951-961
Accelerated release of carbon from soils is one of the most important feed backs related to anthropogenically induced climate change. Studies addressing the mechanisms for soil carbon release through organic matter decomposition have focused on the effect of changes in the average temperature, with little attention to changes in temperature...
Combined multibeam and LIDAR bathymetry data from eastern Long Island Sound and westernmost Block Island Sound-A regional perspective
L.J. Poppe, W. W. Danforth, K.Y. McMullen, Castle E. Parker, E. F. Doran
2011, Open-File Report 2011-1003
Detailed bathymetric maps of the sea floor in Long Island Sound are of great interest to the Connecticut and New York research and management communities because of this estuary's ecological, recreational, and commercial importance. The completed, geologically interpreted digital terrain models (DTMs), ranging in area from 12 to 293 square...
Density estimation in a wolverine population using spatial capture-recapture models
J. Andrew Royle, Audrey J. Magoun, Beth Gardner, Patrick Valkenbury, Richard E. Lowell
Kevin McKelvey, editor(s)
2011, Journal of Wildlife Management (75) 604-611
Classical closed-population capture-recapture models do not accommodate the spatial information inherent in encounter history data obtained from camera-trapping studies. As a result, individual heterogeneity in encounter probability is induced, and it is not possible to estimate density objectively because trap arrays do not have a well-defined sample area. We applied...
Simulating oil droplet dispersal from the Deepwater Horizon spill with a Lagrangian approach
Elizabeth W. North, E. Eric Adams, Zachary Schlag, Christopher R. Sherwood, Ruoying He, Hoon Hyun, Scott A. Socolofsky
2011, Book chapter, Monitoring and modeling the Deepwater Horizon oil spill: A record-breaking enterprise
An analytical multiphase plume model, combined with time-varying flow and hydrographic fields generated by the 3-D South Atlantic Bight and Gulf of Mexico model (SABGOM) hydrodynamic model, were used as input to a Lagrangian transport model (LTRANS), to simulate transport of oil droplets dispersed at depth from the recent Deepwater...
Treatment of anchor pixels in the METRIC model for improved estimation of sensible and latent heat fluxes
Ramesh K. Singh, A. Irmak
2011, Hydrological Sciences Journal (56) 895-906
Reliable estimation of sensible heat flux (H) is important in energy balance models for quantifying evapotranspiration (ET). This study was conducted to evaluate the value of adding the Priestley-Taylor (PT) equation to the METRIC (Mapping Evapotranspiration at high Resolution with Internalized Calibration) model. METRIC was used to estimate energy fluxes...
Coastal subsidence in Oregon, USA during the giant Cascadia earthquake of AD 1700
A. D. Hawkes, B. P. Horton, A.R. Nelson, C. H. Vane, Y. Sawai
2011, Quaternary Science Reviews (30) 364-376
Quantitative estimates of land-level change during the giant AD 1700 Cascadia earthquake along the Oregon coast are inferred from relative sea-level changes reconstructed from fossil foraminiferal assemblages preserved within the stratigraphic record. A transfer function, based upon a regional training set of modern sediment samples from Oregon estuaries, is calibrated...
Agricultural herbicide transport in a first-order intermittent stream, Nebraska, USA
J. R. Vogel, J.I. Linard
2011, Applied Engineering in Agriculture (27) 63-74
The behavior of herbicides in surface waters is a function of many variables, including scale of the watershed, physical and chemical properties of the herbicide, physical and chemical properties of the soil, rainfall intensity, and time of year. In this study, the transport of 6 herbicides and 12 herbicide degradates...
Analysis of dam-passage survival of yearling and subyearling Chinook salmon and juvenile steelhead at The Dalles Dam, Oregon, 2010
John W. Beeman, Tobias J. Kock, Russell W. Perry, Steven G. Smith
2011, Open-File Report 2011-1162
We performed a series of analyses of mark-recapture data from a study at The Dalles Dam during 2010 to determine if model assumptions for estimation of juvenile salmonid dam-passage survival were met and if results were similar to those using the University of Washington's newly developed ATLAS software. The study...
Computer programs for forward and inverse modeling of acoustic and electromagnetic data
Karl J. Ellefsen
2011, Open-File Report 2011-1124
A suite of computer programs was developed by U.S. Geological Survey personnel for forward and inverse modeling of acoustic and electromagnetic data. This report describes the computer resources that are needed to execute the programs, the installation of the programs, the program designs, some tests of their accuracy, and some...
USGS science for the Nation's changing coasts; shoreline change assessment
E. Robert Thieler, Cheryl J. Hapke
2011, Fact Sheet 2011-3074
The coastline of the United States features some of the most popular tourist and recreational destinations in the world and is the site of intense residential, commercial, and industrial development. The coastal zone also has extensive and pristine natural areas, with diverse ecosystems providing essential habitat and resources that support...
