A model‐data intercomparison of CO2 exchange across North America: Results from the North American Carbon Program site synthesis
Christopher R. Schwalm, Christopher A. Williams, Kevin Schaefer, Ryan Anderson, M. A. Arain, I. Baker, Alan Barr, T. Andrew Black, Guangsheng Chen, Jing M. Chen, Philippe Ciais, Kenneth J. Davis, Lianhong Gu, David Hollinger, R. C. Izaurralde, Chris Kucharik, P. Lafleur, Beverly E. Law, Longhui Li, Zhengpeng Li, Shuguang Liu, E. Lokupitiya, Y. Luo, Siyan Ma, Hank A. Margolis, Roser Matamala, Harry McCaughey, Russell K. Monson, Walter C. Oechel, Changhui Peng, Benjamin Poulter, David T. Price, Dan M. Riciutto, William Riley, A. Sahoo, M. Sprintsin, J. Sun, H. Tian, Christina Tonitto, Hans Verbeeck, Shashi B. Verma
2010, Journal of Geophysical Research: Biogeosciences (115)
Our current understanding of terrestrial carbon processes is represented in various models used to integrate and scale measurements of CO2 exchange from remote sensing and other spatiotemporal data. Yet assessments are rarely conducted to determine how well models simulate carbon processes across vegetation types and environmental conditions. Using standardized data from...
Digital map of the aquifer boundary for the High Plains aquifer in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming
Sharon Qi
2010, Data Series 543
This digital data set represents the extent of the High Plains aquifer in the central United States. The extent of the High Plains aquifer covers 174,000 square miles in eight states: Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming. This data set represents a compilation of information...
Encounters of aircraft with volcanic ash clouds: A compilation of known incidents, 1953-2009
Marianne Guffanti, Thomas J. Casadevall, Karin Budding
2010, Data Series 545
Information about reported encounters of aircraft with volcanic ash clouds from 1953 through 2009 has been compiled to document the nature and scope of risks to aviation from volcanic activity. The information, gleaned from a variety of published and other sources, is presented in database and spreadsheet formats; the compilation...
Surficial geologic map of the Heath-Northfield-Southwick-Hampden 24-quadrangle area in the Connecticut Valley region, west-central Massachusetts
Janet Radway Stone, Mary L. DiGiacomo-Cohen
2010, Open-File Report 2006-1260-G
The surficial geologic map layer shows the distribution of nonlithified earth materials at land surface in an area of 24 7.5-minute quadrangles (1,238 mi2 total) in west-central Massachusetts. Across Massachusetts, these materials range from a few feet to more than 500 ft in thickness. They overlie bedrock, which crops out...
Freshwater bacteria are stoichiometrically flexible with a nutrient composition similar to seston
James B. Cotner, Edward K. Hall, J. Thad Scott, Mikal Heldal
2010, Frontiers in Microbiology (1)
Although aquatic bacteria are assumed to be nutrient-rich, they out-compete other foodweb osmotrophs for nitrogen (N) and phosphorus (P) an apparent contradiction to resource ratio theory. This paradox could be resolved if aquatic bacteria were demonstrated to be nutrient-poor relative other portions of the planktonic food web. In a survey...
Framework for ecological monitoring on lands of Alaska National Wildlife Refuges and their partners
Andrea Woodward, Erik A. Beever
2010, Open-File Report 2010-1300
National Wildlife Refuges in Alaska and throughout the U.S. have begun developing a spatially comprehensive monitoring program to inform management decisions, and to provide data to broader research projects. In an era of unprecedented rates of climate change, monitoring is essential to detecting, understanding, communicating and mitigating climate-change effects on...
Assessment of arsenic concentrations in domestic well water, by town, in Maine 2005-09
M.G. Nielsen, P.J. Lombard, L.F. Schalk
2010, Scientific Investigations Report 2010-5199
Prior studies have established that approximately 10 percent of domestic wells in Maine have arsenic levels greater than the U.S. Environmental Protection Agency maximum contaminant limit (10 micrograms per liter (ug/L)). Of even greater concern are multiple discoveries of wells with very high arsenic levels (> 500 ug/L) in several...
Water resources of Monroe County, New York, water years 2003-08: Streamflow, constituent loads, and trends in water quality
Brett A. Hayhurst, William F. Coon, David A.V. Eckhardt
2010, Scientific Investigations Report 2010-5216
This report, the sixth in a series published since 1994, presents analyses of hydrologic data in Monroe County for the period October 2002 through September 2008. Streamflows and water quality were monitored at nine sites by the Monroe County Department of Health and the U.S. Geological Survey. Streamflow yields (flow...
Potentiometric surface of the Upper Patapsco aquifer in southern Maryland, September 2009
Stephen E. Curtin, David C. Andreasen, Andrew W. Staley
2010, Open-File Report 2010-1205
This report presents a map showing the potentiometric surface of the upper Patapsco aquifer in the Patapsco Formation of Early Cretaceous age in Southern Maryland during September 2009. The map is based on water-level measurements in 65 wells. The highest measured water level was 118 feet above sea level near...
The difference between the potentiometric surfaces of the Upper Patapsco aquifer in southern Maryland, September 1990 and September 2009
Stephen E. Curtin, David C. Andreasen, Andrew W. Staley
2010, Open-File Report 2010-1206
This report presents a map showing the change in the potentiometric surface of the upper Patapsco aquifer in the Patapsco Formation of Early Cretaceous age in Southern Maryland between September 1990 and September 2009. The map, based on water level differences obtained from 33 wells, shows that during the 19-year...
The Difference Between the Potentiometric Surfaces of the Magothy Aquifer in Southern Maryland, September 1975 and September 2009
Stephen E. Curtin, David C. Andreasen, Andrew W. Staley
2010, Open-File Report 2010-1204
This report presents a map showing the change in the potentiometric surface of the Magothy aquifer in the Magothy Formation of Late Cretaceous age in Southern Maryland between September 1975 and September 2009. The map, based on water level differences obtained from 48 wells, shows that during the 34-year period,...
Potentiometric Surface of the Patuxent Aquifer in Southern Maryland, September 2009
Stephen E. Curtin, David C. Andreasen, Andrew W. Staley
2010, Open-File Report 2010-1209
This report presents a map showing the potentiometric surface of the Patuxent aquifer in the Patuxent Formation of Early Cretaceous age in Southern Maryland during September 2009. The map is based on water-level measurements in 42 wells. The highest measured water level was 169 feet above sea level in the...
The Difference Between the Potentiometric Surfaces of the Aquia Aquifer in Southern Maryland, September 1982 and September 2009
Stephen E. Curtin, David C. Andreasen, Andrew W. Staley
2010, Open-File Report 2010-1202
This report presents a map showing the change in the potentiometric surface of the Aquia aquifer in the Aquia Formation of Paleocene age in Southern Maryland between September 1982 and September 2009. The map, based on water level differences obtained from 49 wells, shows that the potentiometric surface during the...
Improved USGS methodology for assessing continuous petroleum resources
Ronald R. Charpentier, Troy A. Cook
2010, Data Series 547
This report presents an improved methodology for estimating volumes of continuous (unconventional) oil and gas resources within the United States and around the world. The methodology is based on previously developed U.S. Geological Survey methodologies that rely on well-scale production data. Improvements were made primarily to how the uncertainty about...
Potentiometric Surface of the Magothy Aquifer in Southern Maryland, September 2009
Stephen E. Curtin, David C. Andreasen, Andrew W. Staley
2010, Open-File Report 2010-1203
This report presents a map showing the potentiometric surface of the Magothy aquifer in the Magothy Formation of Late Cretaceous age in Southern Maryland during September 2009. The map is based on water-level measurements in 66 wells. The highest measured water level was 85 feet above sea level near the...
Potentiometric Surface of the Lower Patapsco Aquifer in Southern Maryland, September 2009
Stephen E. Curtin, David C. Andreasin, Andrew W. Staley
2010, Open-File Report 2010-1207
This report presents a map showing the potentiometric surface of the lower Patapsco aquifer in the Patapsco Formation of Early Cretaceous age in Southern Maryland during September 2009. The map is based on water-level measurements in 64 wells. The highest measured water level was 110 feet above sea level near...
Social Values for Ecosystem Services (SolVES): using GIS to include social values information in ecosystem services assessments
B.C. Sherrouse, D.J. Semmens
2010, Fact Sheet 2010-3118
Ecosystem services can be defined in various ways; simply put, they are the benefits provided by nature, which contribute to human well-being. These benefits can range from tangible products such as food and fresh water to cultural services such as recreation and esthetics. As the use of these benefits continues...
Hydrologic Data for Deep Creek Lake and Selected Tributaries, Garrett County, Maryland, 2007-08
William S.L. Banks, William J. Davies, Allen C. Gellis, Andrew E. LaMotte, Wendy S. McPherson, Daniel J. Soeder
2010, Open-File Report 2010-1092
Introduction Recent and ongoing efforts to develop the land in the area around Deep Creek Lake, Garrett County, Maryland, are expected to change the volume of sediment moving toward and into the lake, as well as impact the water quality of the lake and its many tributaries. With increased development,...
Occurrence and Distribution of Organic Wastewater Compounds in Rock Creek Park, Washington, D.C., 2007-08
Daniel J. Phelan, Cherie V. Miller
2010, Scientific Investigations Report 2010-5162
The U.S. Geological Survey, and the National Park Service Police Aviation Group, conducted a high-resolution, low-altitude aerial thermal infrared survey of the Washington, D.C. section of Rock Creek Basin within the Park boundaries to identify specific locations where warm water was discharging from seeps or pipes to the creek. Twenty-three...
Estimation of selected streamflow statistics for a network of low-flow partial-record stations in areas affected by Base Realignment and Closure (BRAC) in Maryland
Kernell G. Ries III, Ken Eng
2010, Scientific Investigations Report 2010-5170
The U.S. Geological Survey, in cooperation with the Maryland Department of the Environment, operated a network of 20 low-flow partial-record stations during 2008 in a region that extends from southwest of Baltimore to the northeastern corner of Maryland to obtain estimates of selected streamflow statistics at the station locations. The...
Calculation of aftershock accumulation from observed postseismic deformation: M6 2004 Parkfield, California, earthquake
James C. Savage
2010, Geophysical Research Letters (37) 1-4
[1] The postseismic stress accumulation τ(t) over the interval 0.004 to 880 days following the 2004 Parkfield earthquake (M6) can be inferred from GPS measurements of postseismic deformation. The stress relaxation τ(t) − τ′lt, where τ′l is the interseismic loading rate and t is the time after the earthquake, plotted as a function of the number of...
Occurrence of Escherichia coli in the Cuyahoga River in the Cuyahoga Valley National Park, Ohio
Amie M. G. Brady, Meg B. Plona
2010, Fact Sheet 2010-3068
There are several measures of the 'cleanliness' of a natural body of water, including concentrations of indicator bacteria, anthropogenic chemicals (chemicals derived from human activities), and nutrients, such as nitrogen and phosphorous. Escherichia coli (E. coli) is a bacterium that lives in the intestinal tract of warm-blooded animals, such as...
Quantifying effects of climate change on the snowmelt-dominated groundwater resources of northern New England
Robert W. Dudley, Glenn A. Hodgkins, James B. Shanley, Thomas J. Mack
2010, Fact Sheet 2010-3104
Recent U.S. Geological Survey (USGS) climate studies in New England have shown substantial evidence of hydrologic changes during the last 100 years, including trends toward earlier snowmelt runoff, decreasing occurrence of river ice, and decreasing winter snowpack. These studies are being expanded to include investigation of trends in groundwater levels...
Report of the IAU Working Group on cartographic coordinates and rotational elements: 2009
Brent A. Archinal, Michael F. A’Hearn, Edward Bowell, Al Conrad, Guy J. Consolmagno, Regis Courtin, Toshio Fukushima, Daniel Hestroffer, James L. Hilton, Georgij A. Krasinsky, Gregory Neumann, Jurgen Oberst, P. Kenneth Seidelmann, Philip Stooke, David J. Tholen, Peter C. Thomas, Iwan P. Williams
2010, Celestial Mechanics and Dynamical Astronomy (109) 101-135
Every three years the IAU Working Group on Cartographic Coordinates and Rotational Elements revises tables giving the directions of the poles of rotation and the prime meridians of the planets, satellites, minor planets, and comets. This report takes into account the IAU Working Group for Planetary System Nomenclature (WGPSN) and...
Southeast Ecological Science Center
Rachel J. Pawlitz
2010, Fact Sheet 2010-3111
Aquatic ecosystems, from deep sea reefs and coastal marshes to freshwater springs and wetlands, are home to diverse assemblages of life. These commercially and ecologically important systems are part of our national heritage, and are often treasured places or refuges that protect rare or threatened species. In the water-rich Southeastern...
