Conference Papers
Science Quality and Integrity
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.
Filter Total Items: 5518
Use of multi-offset borehole-radar reflection method in fractured crystalline bedrock at Mirror Lake, Grafton County, New Hampshire Use of multi-offset borehole-radar reflection method in fractured crystalline bedrock at Mirror Lake, Grafton County, New Hampshire
Multi-offset, single-hole, borehole-radar reflection surveys were conducted at the U.S. Geological Survey Fractured Rock Research Site at Mirror Lake, in Grafton County, New Hampshire. The study was conducted to evaluate the benefits of applying multi-offset seismic processing techniques to borehole-radar reflection surveys in fractured rock. The multi-offset reflection surveys were...
Authors
John W. Lane, F.P. Haeni, Roelof J. Versteeg
Use of time-lapse attenuation-difference radar tomography methods to monitor saline tracer transport in fractured crystalline bedrock Use of time-lapse attenuation-difference radar tomography methods to monitor saline tracer transport in fractured crystalline bedrock
No abstract available.
Authors
John W. Lane, F.P. Haeni, Frederick D. Day-Lewis
Assessing groundwater vulnerability using logistic regression Assessing groundwater vulnerability using logistic regression
Determining the likelihood that groundwater contains elevated concentrations of contaminants can help water resource managers protect drinking water supplies. For example, this information is useful for selecting new sites for drinking water sources and designing more cost-effective monitoring strategies for existing sources. Groundwater vulnerability has typically been assessed using...
Authors
Anthony J. Tesoriero, E. L. Inkpen, Frank D. Voss
Both contaminants and habitat limit Neosho madtom (Noturus Placidus) numbers in the Spring River, a midwestern warmwater stream effected by runoff from historic zinc and lead mining Both contaminants and habitat limit Neosho madtom (Noturus Placidus) numbers in the Spring River, a midwestern warmwater stream effected by runoff from historic zinc and lead mining
No abstract available.
Authors
Mark L. Wildhaber, Ann L. Allert, Christopher J. Schmitt
Character of the middle Nonlithophysal Zone of the Topopah Spring Tuff at Yucca Mountain Character of the middle Nonlithophysal Zone of the Topopah Spring Tuff at Yucca Mountain
No abstract available.
Authors
David C. Buesch, R.W. Spengler
Detailed correlation of lithostratigraphic and borehole geophysical log data for identifying contacts at Yucca Mountain Detailed correlation of lithostratigraphic and borehole geophysical log data for identifying contacts at Yucca Mountain
No abstract available.
Authors
David C. Buesch, R.W. Spengler
Development of a technically consistent, qualified lithostratigraphic data base for the Yucca Mountain Project Development of a technically consistent, qualified lithostratigraphic data base for the Yucca Mountain Project
Studies of Yucca Mountain, Nevada, as a potential geologic nuclear-waste repository began in the late 1970s and continued to 1988 when the U. S. Nuclear Regulatory Commission determined that the quality assurance (QA) programs in place were not adequate and demanded restructuring to a new QA program. The new QA program was accepted in 1989, but many activities did not resume until new...
Authors
David C. Buesch, R.W. Spengler, M.S. Witkowski, S.M. Keller
Organochlorine pesticides, PCBs, and mercury in Osprey (Pandion haliaetus) eggs from the Upper Volga River, Russia Organochlorine pesticides, PCBs, and mercury in Osprey (Pandion haliaetus) eggs from the Upper Volga River, Russia
No abstract available
Authors
Charles J. Henny, V.M. Galushin, A.V. Kuznetsov
Origins and development of the west-central Florida barrier island system: Interpretations of the past and recommendations for the future Origins and development of the west-central Florida barrier island system: Interpretations of the past and recommendations for the future
No abstract available.
Authors
G. Gelfenbaum, G. R. Brooks, R. A. Davis, L. J. Doyle, A. E. Gibbs, A. C. Hine, S. D. Locker, D.C. Twichell, Robert H. Weisberg
Oxic limestone drains for treatment of dilute, acidic mine drainage Oxic limestone drains for treatment of dilute, acidic mine drainage
Limestone treatment systems can be effective for remediation of acidic mine drainage (AMD) that contains moderate concentrations of dissolved O2 , Fe3+ , or A13+ (1‐5 mg‐L‐1 ). Samples of water and limestone were collected periodically for 1 year at inflow, outflow, and intermediate points within underground, oxic limestone drains (OLDs) in Pennsylvania to evaluate the transport of...
Authors
Charles A. Cravotta
The influence of transportation corridors on the movement of pronghorn antelope over a fragmented landscape in northern Arizona The influence of transportation corridors on the movement of pronghorn antelope over a fragmented landscape in northern Arizona
No abstract available
Authors
Charles van Riper