Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16780
Reconnaissance investigation of the alluvial gold deposits in the North Takhar Area of Interest, Takhar Province, Afghanistan
This study is a reconnaissance assessment of the alluvial gold deposits of the North Takhar Area of Interest (AOI) in Takhar Province, Afghanistan. Soviet and Afghan geologists collected data and calculated the gold deposit reserves in Takhar Province in the 1970s, prior to the development of satellite-based remote-sensing platforms and new methods of geomorphic mapping. The purpose of this study
Authors
Peter G. Chirico, Katherine C. Malpeli, Thomas W. Moran
Reconnaissance investigation of the placer gold deposits in the Zarkashan Area of Interest, Ghazni Province, Afghanistan
This study is a reconnaissance investigation of the placer gold deposits in the Zarkashan Area of Interest (AOI) in Ghazni Province, Afghanistan. Detailed investigations of the Zarkashan gold deposits were conducted by Soviet and Afghan geologists in the 1960s and 1970s, prior to the development of satellite-based remote-sensing platforms and new methods of geomorphic mapping. The purpose of this
Authors
Katherine C. Malpeli, Peter G. Chirico, Isabel H. McLoughlin
Carolinas Coastal Change Processes Project data report for nearshore observations at Cape Hatteras, North Carolina
An oceanographic field study conducted in February 2010 investigated processes that control nearshore flow and sediment transport dynamics at Cape Hatteras, North Carolina. This report describes the project background, field program, instrumentation setup, and locations of the sensor deployments. The data collected, and supporting meteorological and streamflow observations, are presented as time-s
Authors
Brandy N. Armstrong, John C. Warner, George Voulgaris, Jeffrey H. List, Robert Thieler, Marinna A. Martini, Ellyn T. Montgomery, Jesse E. McNinch, Jeffrey W. Book, Kevin Haas
Method to support Total Maximum Daily Load development using hydrologic alteration as a surrogate to address aquatic life impairment in New Jersey streams
More than 300 ambient monitoring sites in New Jersey have been identified by the New Jersey Department of Environmental Protection (NJDEP) in its integrated water-quality monitoring and assessment report (that is, the 305(b) Report on general water quality and 303(d) List of waters that do not support their designated uses) as being impaired with respect to aquatic life; however, no unambiguous st
Authors
Jonathan Kennen, Melissa L. Riskin, Pamela A. Reilly, Susan J. Colarullo
A deposit model for magmatic iron-titanium-oxide deposits related to Proterozoic massif anorthosite plutonic suites
This descriptive model for magmatic iron-titanium-oxide (Fe-Ti-oxide) deposits hosted by Proterozoic age massif-type anorthosite and related rock types presents their geological, mineralogical, geochemical, and geoenvironmental attributes. Although these Proterozoic rocks are found worldwide, the majority of known deposits are found within exposed rocks of the Grenville Province, stretching from s
Authors
Laurel G. Woodruff, Suzanne W. Nicholson, David L. Fey
Shallow geology, seafloor texture, and physiographic zones of the Inner Continental Shelf from Nahant to northern Cape Cod Bay, Massachusetts
The Massachusetts inner continental shelf between Nahant and northern Cape Cod Bay has been profoundly affected by the occupation and retreat of glacial ice sheets and relative sea-level change during the Quaternary. Marine geologic mapping of this area is a component of a statewide cooperative effort involving the U.S. Geological Survey and the Massachusetts Office of Coastal Zone Management. Int
Authors
Elizabeth A. Pendleton, Wayne E. Baldwin, Walter A. Barnhardt, Seth D. Ackerman, David S. Foster, Brian D. Andrews, William C. Schwab
Velocity, water-quality, and bathymetric surveys of the Grays Landing and Maxwell Navigation Pools, and Selected Tributaries to the Monongahela River, Pennsylvania, 2010–11
The U.S. Geological Survey (USGS) conducted velocity, water-quality, and bathymetric surveys from spring 2010 to summer 2011 in the Grays Landing and Maxwell navigation pools of the Monongahela River, Pennsylvania, and selected tributaries in response to elevated levels of total dissolved solids (TDS) recorded in early September 2009. Velocity data were collected using an Acoustic Doppler Current
Authors
Scott A. Hoffman, Mark A. Roland, Luther Schalk, John W. Fulton
Monitoring to assess progress toward meeting the total maximum daily load for phosphorus in the Assabet River, Massachusetts: phosphorus loads, 2008 through 2010
Wastewater discharges to the Assabet River contribute substantial amounts of phosphorus, which support accumulations of nuisance aquatic plants that are most evident in the river’s impounded reaches during the growing season. To restore the Assabet River’s water quality and aesthetics, the U.S. Environmental Protection Agency required the major wastewater-treatment plants in the drainage basin to
Authors
Marc J. Zimmerman, Jennifer G. Savoie
Water resources and shale gas/oil production in the Appalachian Basin: critical issues and evolving developments
Unconventional natural gas and oil resources in the United States are important components of a national energy program. While the Nation seeks greater energy independence and greener sources of energy, Federal agencies with environmental responsibilities, state and local regulators and water-resource agencies, and citizens throughout areas of unconventional shale gas development have concerns abo
Authors
William M. Kappel, John H. Williams, Zoltan Szabo
Using multi-species occupancy models in structured decision making on managed lands
Land managers must balance the needs of a variety of species when manipulating habitats. Structured decision making provides a systematic means of defining choices and choosing among alternative management options; implementation of a structured decision requires quantitative approaches to predicting consequences of management on the relevant species. Multi-species occupancy models provide a con
Authors
John R. Sauer, Peter J. Blank, Elise F. Zipkin, Jane E. Fallon, Frederick W. Fallon
Sustainably connecting children with nature: an exploratory study of nature play area visitor impacts and their management
Parks are developing nature play areas to improve children's health and “connect” them with nature. However, these play areas are often located in protected natural areas where managers must balance recreation with associated environmental impacts. In this exploratory study, we sought to describe these impacts. We also investigated which ages, gender, and play group sizes most frequently caused im
Authors
Matthew H.E.M. Browning, Jeffrey L. Marion, Timothy G. Gregoire
Demographics of reintroduced populations: estimation, modeling, and decision analysis
Reintroduction can be necessary for recovering populations of threatened species. However, the success of reintroduction efforts has been poorer than many biologists and managers would hope. To increase the benefits gained from reintroduction, management decision making should be couched within formal decision-analytic frameworks. Decision analysis is a structured process for informing decision ma
Authors
Sarah J. Converse, Clinton T. Moore, Doug P. Armstrong