Karen C. Rice, PhD (Former Employee)
Science and Products
Filter Total Items: 71
Trace-element concentrations in streambed sediment across the conterminous United States
Trace-element concentrations in 541 streambed-sediment samples collected from 20 study areas across the conterminous United States were examined as part of the National Water-Quality Assessment Program of the U.S. Geological Survey. Sediment samples were sieved and the <63-μm fraction was retained for determination of total concentrations of trace elements. Aluminum, iron, titanium, and organic ca
Authors
Karen C. Rice
Measuring streamflow in Virginia (1999 revision)
The U.S. Geological Survey (USGS), U.S. Department of the Interior, is the Nation's largest Earth-science information agency. Among its many responsibilities, such as map making and providing information on earthquakes and other natural hazards, the USGS provides information on the Nation's water resources. The USGS has collected and analyzed hydrologic (water-related) information for more than 10
Authors
Roger M. Moberg, Karen C. Rice, Eugene D. Powell
Use of geochemical mass balance modelling to evaluate the role of weathering in determining stream chemistry in five mid-Atlantic watersheds on different lithologies
No abstract available.
Authors
Anne K. O'Brien, Karen C. Rice, Owen P. Bricker, Margaret M. Kennedy, R. Todd Anderson
Comparison of hydrochemical tracers to estimate source contributions to peak flow in a small, forested, headwater catchment
Three-component (throughfall, soil water, groundwater) hydrograph separations at peak flow were performed on 10 storms over a 2-year period in a small forested catchment in north-central Maryland using an iterative and an exact solution. Seven pairs of tracers (deuterium and oxygen 18, deuterium and chloride, deuterium and sodium, deuterium and silica, chloride and silica, chloride and sodium, and
Authors
Karen C. Rice, George M. Hornberger
Transmission of atmospherically deposited trace elements through an undeveloped, forested Maryland watershed
Retention and transmission of atmospherically-derived major (H+, Na+, K+, Ca2+, Mg2+, HCO3-, NO3-, SO4-2, Cl-, SiO2) and trace (Al, As, Cd, Cr, Cu, Fe, Mn, Ni, Pb, Se, and Zn) species were evaluated in an undeveloped forested watershed underlain by a rather inert quartzite lithology (Bear Branch, Catoctin State Forest, Thrumont, Maryland). These comparisons were based on atmospheric input to stre
Authors
T.M. Church, J.R. Scudlark, Kathryn M. Conko, Owen P. Bricker, Karen C. Rice
Use of geochemical mass balance modelling to evaluate the role of weathering in determining stream chemistry in five mid-Atlantic watersheds on different lithologies
The importance of mineral weathering was assessed and compared for five mid-Atlantic watersheds receiving similar atmospheric inputs but underlain by differing bedrock. Annual solute mass balances and volume-weighted mean solute concentrations were calculated for each watershed for each year of record. In addition, primary and secondary mineralogy were determined for each of the watersheds through
Authors
Anne K. O'Brien, Karen C. Rice, Owen P. Bricker, Margaret M. Kennedy, R. Todd Anderson
Acid Rain
Acid deposition, or acid rain as it is more commonly referred to, has become a widely publicized environmental issue in the U.S. over the past decade. The term usually conjures up images of fish kills, dying forests, "dead" lakes, and damage to monuments and other historic artifacts. The primary cause of acid deposition is emission of S02 and NOx to the atmosphere during the combustion of fossil f
Authors
Owen P. Bricker, Karen C. Rice
Hydrologic and geochemical factors affecting the chemistry of small headwater streams in response to acidic deposition on Catoctin Mountain, north-central Maryland
Hydrologic and water-quality data were collected at a precipitation-collection station and from two small watersheds on Catoctin Mountain, north- central Maryland, as part of an investigation of episodic acidification and its effects on streamwater quality. Data were collected from June 1990 through December 1993. Descriptions of the water shed instrumentation, data-collection techniques, and labo
Authors
Karen C. Rice, Owen P. Bricker
Hydrologic and water-quality data for two small watersheds on Catoctin Mountain, North-Central Maryland, 1987-93
Hydrologic and water-quality data were collected from a precipitation-collection station and from two small watersheds on Catoctin Mountain, north-central Maryland, as part of investigations of acidic deposition and episodic acidification, and their effects on streamwater quality. Detailed descriptions of the site instrumentation in the watersheds, field data-collection techniques, and laboratory
Authors
Karen C. Rice, Margaret M. Kennedy, Christiana A. Carter, Robert T. Anderson, Owen P. Bricker
Seasonal cycles in streamwater quality on Catoctin Mountain, Maryland
In 1980, the U.S. Congress mandated the National Acid Precipitation Assessment Program (NAPAP) to study the effects of acidic precipitation (acid rain). In 1982, the U.S. Geological Survey (USGS) was selected to be the lead Federal agency under NAPAP to monitor the composition of precipitation and its effects on the environment. In 1982, the USGS began to monitor precipitation and streamwater on C
Authors
Karen C. Rice, Owen P. Bricker
Measuring streamflow in Virginia
No abstract available.
Authors
Roger M. Moberg, Karen C. Rice, Eugene D. Powell
Acid Rain
Although acid rain is fading as a political issue in the United States and funds for research in this area have largely disappeared, the acidity of rain in the Eastern United States has not changed significantly over the last decade, and it continues to be a serious environmental problem. Acid deposition (commonly called acid rain) is a term applied to all forms of atmospheric deposition of acidic
Authors
Owen P. Bricker, Karen C. Rice
Science and Products
Filter Total Items: 71
Trace-element concentrations in streambed sediment across the conterminous United States
Trace-element concentrations in 541 streambed-sediment samples collected from 20 study areas across the conterminous United States were examined as part of the National Water-Quality Assessment Program of the U.S. Geological Survey. Sediment samples were sieved and the <63-μm fraction was retained for determination of total concentrations of trace elements. Aluminum, iron, titanium, and organic ca
Authors
Karen C. Rice
Measuring streamflow in Virginia (1999 revision)
The U.S. Geological Survey (USGS), U.S. Department of the Interior, is the Nation's largest Earth-science information agency. Among its many responsibilities, such as map making and providing information on earthquakes and other natural hazards, the USGS provides information on the Nation's water resources. The USGS has collected and analyzed hydrologic (water-related) information for more than 10
Authors
Roger M. Moberg, Karen C. Rice, Eugene D. Powell
Use of geochemical mass balance modelling to evaluate the role of weathering in determining stream chemistry in five mid-Atlantic watersheds on different lithologies
No abstract available.
Authors
Anne K. O'Brien, Karen C. Rice, Owen P. Bricker, Margaret M. Kennedy, R. Todd Anderson
Comparison of hydrochemical tracers to estimate source contributions to peak flow in a small, forested, headwater catchment
Three-component (throughfall, soil water, groundwater) hydrograph separations at peak flow were performed on 10 storms over a 2-year period in a small forested catchment in north-central Maryland using an iterative and an exact solution. Seven pairs of tracers (deuterium and oxygen 18, deuterium and chloride, deuterium and sodium, deuterium and silica, chloride and silica, chloride and sodium, and
Authors
Karen C. Rice, George M. Hornberger
Transmission of atmospherically deposited trace elements through an undeveloped, forested Maryland watershed
Retention and transmission of atmospherically-derived major (H+, Na+, K+, Ca2+, Mg2+, HCO3-, NO3-, SO4-2, Cl-, SiO2) and trace (Al, As, Cd, Cr, Cu, Fe, Mn, Ni, Pb, Se, and Zn) species were evaluated in an undeveloped forested watershed underlain by a rather inert quartzite lithology (Bear Branch, Catoctin State Forest, Thrumont, Maryland). These comparisons were based on atmospheric input to stre
Authors
T.M. Church, J.R. Scudlark, Kathryn M. Conko, Owen P. Bricker, Karen C. Rice
Use of geochemical mass balance modelling to evaluate the role of weathering in determining stream chemistry in five mid-Atlantic watersheds on different lithologies
The importance of mineral weathering was assessed and compared for five mid-Atlantic watersheds receiving similar atmospheric inputs but underlain by differing bedrock. Annual solute mass balances and volume-weighted mean solute concentrations were calculated for each watershed for each year of record. In addition, primary and secondary mineralogy were determined for each of the watersheds through
Authors
Anne K. O'Brien, Karen C. Rice, Owen P. Bricker, Margaret M. Kennedy, R. Todd Anderson
Acid Rain
Acid deposition, or acid rain as it is more commonly referred to, has become a widely publicized environmental issue in the U.S. over the past decade. The term usually conjures up images of fish kills, dying forests, "dead" lakes, and damage to monuments and other historic artifacts. The primary cause of acid deposition is emission of S02 and NOx to the atmosphere during the combustion of fossil f
Authors
Owen P. Bricker, Karen C. Rice
Hydrologic and geochemical factors affecting the chemistry of small headwater streams in response to acidic deposition on Catoctin Mountain, north-central Maryland
Hydrologic and water-quality data were collected at a precipitation-collection station and from two small watersheds on Catoctin Mountain, north- central Maryland, as part of an investigation of episodic acidification and its effects on streamwater quality. Data were collected from June 1990 through December 1993. Descriptions of the water shed instrumentation, data-collection techniques, and labo
Authors
Karen C. Rice, Owen P. Bricker
Hydrologic and water-quality data for two small watersheds on Catoctin Mountain, North-Central Maryland, 1987-93
Hydrologic and water-quality data were collected from a precipitation-collection station and from two small watersheds on Catoctin Mountain, north-central Maryland, as part of investigations of acidic deposition and episodic acidification, and their effects on streamwater quality. Detailed descriptions of the site instrumentation in the watersheds, field data-collection techniques, and laboratory
Authors
Karen C. Rice, Margaret M. Kennedy, Christiana A. Carter, Robert T. Anderson, Owen P. Bricker
Seasonal cycles in streamwater quality on Catoctin Mountain, Maryland
In 1980, the U.S. Congress mandated the National Acid Precipitation Assessment Program (NAPAP) to study the effects of acidic precipitation (acid rain). In 1982, the U.S. Geological Survey (USGS) was selected to be the lead Federal agency under NAPAP to monitor the composition of precipitation and its effects on the environment. In 1982, the USGS began to monitor precipitation and streamwater on C
Authors
Karen C. Rice, Owen P. Bricker
Measuring streamflow in Virginia
No abstract available.
Authors
Roger M. Moberg, Karen C. Rice, Eugene D. Powell
Acid Rain
Although acid rain is fading as a political issue in the United States and funds for research in this area have largely disappeared, the acidity of rain in the Eastern United States has not changed significantly over the last decade, and it continues to be a serious environmental problem. Acid deposition (commonly called acid rain) is a term applied to all forms of atmospheric deposition of acidic
Authors
Owen P. Bricker, Karen C. Rice