Hydraulic Property and Soil Textural Classification Measurements for Rainier Mesa, Nevada Test Site, Nevada
Brian A. Ebel, John R. Nimmo
2010, Open-File Report 2009-1264
This report presents particle size analysis, field-saturated hydraulic conductivity measurements, and qualitative descriptions of surficial materials at selected locations at Rainier Mesa, Nevada. Measurements and sample collection were conducted in the Rainier Mesa area, including unconsolidated sediments on top of the mesa, an ephemeral wash channel near the mesa edge,...
The Western Airborne Contaminant Assessment Project (WACAP): An interdisciplinary evaluation of the impacts of airborne contaminants in Western U.S. National Parks
Dixon H. Landers, Staci Massey Simonich, Daniel A. Jaffe, Linda Geiser, Donald H. Campbell, Adam R. Schwindt, Carl Schreck, Michael Kent, Will Hafner, Howard E. Taylor, Kimberly J. Hageman, Sasha Usenko, Luke Ackerman, Jill Schrlau, Neil Rose, Tamara Blett, Marilyn M. Erway
2010, Environmental Science and Technology (44) 855-859
The concept of a nature reserve such as a National Park is to maintain a location for the enjoyment and study of a pristine environment. However, many pollutants are now known to spread far and wide from their (point[s] of) origin. To grasp the extent of pervasive and boundary-less pollution,...
40Ar/39Ar dating of Silurian and late Devonian cleavages in lower greenschist-facies rocks in the Westminster terrane, Maryland, USA
R. P. Wintsch, Michael J. Kunk, Brian Mulvey, C. Scott Southworth
2010, GSA Bulletin (122) 658-677
40Ar/39Ar dating of muscovite, biotite, and K-feldspar combined with microstructural analysis of lower greenschist-facies, polymetamorphic, phyllitic rocks, and marbles were successfully used to decipher the thermal and tectonic histories of the Westminster and adjacent terranes in western Maryland. The presence of unreset detrital muscovite in some samples demonstrates that temperatures...
Environmental fate of Ra in cation-exchange regeneration brine waste disposed to septic tanks, New Jersey Coastal Plain, USA: migration to the water table
Zoltan Szabo, Eric Jacobsen, Thomas F. Kraemer, Bahman Parsa
2010, Journal of Environmental Radioactivity (101) 33-44
Fate of radium (Ra) in liquid regeneration brine wastes from water softeners disposed to septic tanks in the New Jersey Coastal Plain was studied. Before treatment, combined Ra (226Ra plus 228Ra) concentrations (maximum, 1.54 Bq L−1) exceeded the 0.185 Bq L−1 Maximum Contaminant Level in 4 of 10 studied domestic-well waters (median pH,...
Modeling migratory energetics of Connecticut River American shad (Alosa sapidissima): implications for the conservation of an iteroparous anadromous fish
Theodore Castro-Santos, Benjamin H. Letcher
2010, Canadian Journal of Fisheries and Aquatic Sciences (67) 806-830
We present a simulation model in which individual adult migrant American shad (Alosa sapidissima) ascend the Connecticut River and spawn, and survivors return to the marine environment. Our approach synthesizes bioenergetics, reproductive biology, and behavior to estimate the effects of migratory distance and delays...
The role of material properties in the cratering record of young platy-ridged lava on Mars
Colin M. Dundas, Laszlo P. Keszthelyi, Veronica J. Bray, Alfred S. McEwen
2010, Geophysical Research Letters (37) 1-5
Platy‐ridged surfaces in the Elysium Planitia region of Mars exhibit different crater densities on rafted plates and polygonally patterned areas between them. Rather than being indicative of different ages, these differences provide insight into the variable strength of different types of lava surface. The sizes of small craters, and the...
Historical arroyo formation: Documentation of magnitude and timing of historical changes using repeat photography
Robert H. Webb, Richard Hereford
Robert H. Webb, Diane E. Boyer, Raymond M. Turner, editor(s)
2010, Book chapter, Repeat photography: Methods and applications in the natural sciences
Vegetation of eastern Unalaska Island, Aleutian Islands, Alaska
Stephen S. Talbot, Wilfred B. Schofield, Sandra L. Talbot, Fred J.A. Daniels
2010, Botany (88) 366-388
Plant communities of Unalaska Island in the eastern Aleutian Islands of western Alaska, and their relationship to environmental variables, were studied using a combined Braun-Blanquet and multivariate approach. Seventy relevés represented the range of structural and compositional variation in the matrix of vegetation and landform zonation. Eleven major community types...
To reactivate or not to reactivate: nature and varied behavior of structural inheritance in the Proterozoic basement of the Eastern Colorado mineral belt over 1.7 billion years of earth history
Jonathan S. Caine, John Ridley, Zachary R. Wessel
2010, GSA Field Guides (18) 119-140
The eastern central Front Range of the Rocky Mountains in Colorado has long been a region of geologic interest because of Laramide-age hydrothermal polymetallic vein-related ores. The region is characterized by a well-exposed array of geologic structures associated with ductile and brittle deformation, which record crustal strain over 1.7 billion...
Attributes for NHDplus Catchments (Version 1.1) for the Conterminous United States: Population Density, 2000
Michael Wieczorek, Andrew E. LaMottem
2010, Data Series 490-19
This data set represents the average population density, in number of people per square kilometer multiplied by 10 for the year 2000, compiled for every catchment of NHDPlus for the conterminous United States. The source data set is the 2000 Population Density by Block Group for the Conterminous United States...
Subevents of long-period seismicity: implications for hydrothermal dynamics during the 2004-2008 eruption of Mount St. Helens
Robin S. Matoza, Bernard A. Chouet
2010, Journal of Geophysical Research (115)
One of the most striking aspects of seismicity during the 2004–2008 eruption of Mount St. Helens (MSH) was the precise regularity in occurrence of repetitive long-period (LP) or “drumbeat” events over sustained time periods. However, this precise regularity was not always observed, and at times the temporal occurrence of LP...
Attributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: Physiographic Provinces
Michael Wieczorek, Andrew E. LaMotte
2010, Data Series 490-18
This dataset represents the area of each physiographic province (Fenneman and Johnson, 1946) in square meters, compiled for every catchment of NHDPlus for the conterminous United States. The source data are from Fenneman and Johnson's Physiographic Provinces of the United States, which is based on 8 major divisions, 25...
Learning to recognize volcanic non-eruptions
Michael P. Poland
2010, Geology (38) 287-288
An important goal of volcanology is to answer the questions of when, where, and how a volcano will erupt—in other words, eruption prediction. Generally, eruption predictions are based on insights from monitoring data combined with the history of the volcano. An outstanding example is the A.D. 1980–1986 lava dome growth...
Attributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: Nutrient Inputs from Fertilizer and Manure, Nitrogen and Phosphorus (N&P), 2002
Michael Wieczorek, Andrew E. LaMotte
2010, Data Series 490-17
This data set represents the estimated amount of nitrogen and phosphorus in kilograms for the year 2002, compiled for every catchment of NHDPlus for the conterminous United States. The source data set is County-Level Estimates of Nutrient Inputs to the Land Surface of the Conterminous United States, 1982-2001 (Ruddy and...
Attributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: Normalized Atmospheric Deposition for 2002, Nitrate (NO3)
Michael Wieczorek, Andrew E. LaMotte
2010, Data Series 490-16
This data set represents the average normalized atmospheric (wet) deposition, in kilograms, of Nitrate (NO3) for the year 2002 compiled for every catchment of NHDPlus for the conterminous United States. Estimates of NO3 deposition are based on National Atmospheric Deposition Program (NADP) measurements (B. Larsen, U.S. Geological Survey, written commun.,...
Vulnerability of white spruce tree growth in interior Alaska in response to climate variability: Dendrochronological, demographic, and experimental perspectives
A. David McGuire, Roger W. Ruess, A. Lloyd, J. Yarie, Joy S. Clein, G.P. Juday
2010, Canadian Journal of Forest Research (40) 1197-1209
This paper integrates dendrochronological, demographic, and experimental perspectives to improve understanding of the response of white spruce (Picea glauca (Moench) Voss) tree growth to climatic variability in interior Alaska. The dendrochronological analyses indicate that climate warming has led to widespread declines in white spruce growth throughout interior Alaska that have...
Attributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: NLCD 2001 Land Use and Land Cover
Michael Wieczorek, Andrew E. LaMotte
2010, Data Series 490-15
This data set represents the estimated area of land use and land cover from the National Land Cover Dataset 2001 (LaMotte, 2008), compiled for every catchment of NHDPlus for the conterminous United States. The source data set represents land use and land cover for the conterminous United States for 2001....
Real-time decision support systems: the famine early warning system network
Christopher C. Funk, James P. Verdin
2010, Book chapter, Satellite rainfall applications for surface hydrology
A multi-institutional partnership, the US Agency for International Development’s Famine Early Warning System Network (FEWS NET) provides routine monitoring of climatic, agricultural, market, and socioeconomic conditions in over 20 countries. FEWS NET supports and informs disaster relief decisions that impact millions of people and involve billions of dollars. In this...
Attributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: Normalized Atmospheric Deposition for 2002, Ammonium (NH4)
Michael Wieczorek, Andrew E. LaMotte
2010, Data Series 490-14
This data set represents the average normalized atmospheric (wet) deposition, in kilograms, of Ammonium (NH4) for the year 2002 compiled for every catchment of NHDPlus for the conterminous United States. Estimates of NH4 deposition are based on National Atmospheric Deposition Program (NADP) measurements (B. Larsen, U.S. Geological Survey, written commun.,...
Early warning of rainfall-induced shallow landslides and debris flows in the USA
Rex L. Baum, Jonathan W. Godt
2010, Landslides (7) 259-272
The state of knowledge and resources available to issue alerts of precipitation-induced landslides vary across the USA. Federal and state agencies currently issue warnings of the potential for shallow, rapidly moving landslides and debris flows in a few areas along the Pacific coast and for areas affected by Atlantic hurricanes....
Averaging and sampling for magnetic-observatory hourly data
Jeffrey J. Love, V.C. Tsai, Jennifer L. Gannon
2010, Annales Geophysicae (28) 2079-2096
A time and frequency-domain analysis is made of the effects of averaging and sampling methods used for constructing magnetic-observatory hourly data values. Using 1-min data as a proxy for continuous, geomagnetic variation, we construct synthetic hourly values of two standard types: instantaneous "spot" measurements and simple 1-h "boxcar" averages. We...
Attributes for NHDPlus Catchments (Version 1.1): Level 3 Nutrient Ecoregions, 2002
Michael Wieczorek, Andrew E. LaMotte
2010, Data Series 490-13
This data set represents the area of each level 3 nutrient ecoregion in square meters, compiled for every catchment of NHDPlus for the conterminous United States. The source data are from the 2002 version of the U.S. Environmental Protection Agency's (USEPA) Aggregations of Level III Ecoregions for National Nutrient...
Movie‐maps of low‐latitude magnetic storm disturbance
Jeffrey J. Love, Jennifer L. Gannon
2010, Space Weather (8) 1-21
We present 29 movie‐maps of low‐latitude horizontal‐intensity magnetic disturbance for the years 1999–2006: 28 recording magnetic storms and 1 magnetically quiescent period. The movie‐maps are derived from magnetic vector time series data collected at up to 25 ground‐based observatories. Using a technique similar to that used in the calculation of Dst,...
Measuring sediment accretion in early tidal marsh restoration
John Y. Takekawa, Isa Woo, Nicole D. Athearn, Scott A. Demers, Rachel J. Gardiner, William M. Perry, Neil K. Ganju, Gregory Shellenbarger, David H. Schoellhamer
2010, Wetlands Ecology and Management
Sediment accretion is a critical indicator of initial progress in tidal marsh restoration. However, it is often difficult to measure early deposition rates, because the bottom surface is usually obscured under turbid, tidally-influenced waters. To accurately measure early sediment deposition in marshes, we developed an echosounder system consisting of a...
U.S. Geological Survey external quality-assurance project report to the National Atmospheric Deposition Program / National Trends Network and Mercury Deposition Network, 2007-08
Gregory A. Wetherbee, Natalie E. Latysh, Tanya A. Chesney
2010, Report
The U.S. Geological Survey (USGS) used six distinct programs to provide external quality-assurance monitoring for the National Atmospheric Deposition Program / National Trends Network (NTN) and Mercury Deposition Network (MDN) during 2007-08. The field-audit program assessed the effects of onsite exposure, sample handling, and shipping on the chemistry of NTN...
