Katie Walton-Day (Former Employee)
Science and Products
Filter Total Items: 16
No Result Found
Filter Total Items: 72
Geochemistry of sediments from coastal marshes of Louisiana Geochemistry of sediments from coastal marshes of Louisiana
As a part of the U.S. Geological Survey Global Change and Climate History Program we have been studying the biogeochemistry of coastal marshes in Terrebonne Basin, Louisiana. Louisiana has about 40 percent of the coastal wetlands in the conterminous U.S. and it is losing wetlands at one of the highest rates in the U.S. with the conversion of about 65 km2/yr of marsh to open water...
Authors
L. L. Jackson, Laurie S. Balistrieri, K. S. Smith, Katherine Walton-Day, D.L. Kirshcenman, P.S. Briggs, D.L. Fey, S. J. Sutley
U.S .Geological Survey toxic substance hydrology program: Proceedings of the technical meeting, Monterey, California, March 11-15, 1991 U.S .Geological Survey toxic substance hydrology program: Proceedings of the technical meeting, Monterey, California, March 11-15, 1991
No abstract available.
Authors
D. A. Aronson
By
Water Resources Mission Area, Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program, Central Midwest Water Science Center, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center, Central Plains Water Science Center, Reston Biogeochemical Processes in Groundwater Laboratory
Field methods for measurement of ground water redox chemical parameters Field methods for measurement of ground water redox chemical parameters
An inexpensive, versatile, and portable system is presented, which facilitates rapid field determinations of redox potentials, pH, conductivity, ferrous and total iron, nitrite, specific conductance, dissolved oxygen, and temperature. Accuracy is facilitated by on‐site measurements of most parameters using specially constructed flow‐through cells and, for several analyses, sealed reagent...
Authors
Katherine Walton-Day, Donald L. Macalady, Myron H. Brooks, Vernon T. Tate
Mechanisms controlling Cu, Fe, Mn, and Co profiles in peat of the Filson Creek Fen, northeastern Minnesota Mechanisms controlling Cu, Fe, Mn, and Co profiles in peat of the Filson Creek Fen, northeastern Minnesota
Filson Creek Fen, located in northeastern Minnesota, overlies a Cu-Ni sulfide deposit. A site in the fen was studied to evaluate the hydrogeochemical mechanisms governing the development of Fe, Mn, Co, and Cu profiles in the peat. At the study site, surface peat approximately 1 m thick is separated from the underlying mineralized bedrock by a 6–12 m thickness of lake and glaciofluvial...
Authors
K. Walton-Day, L.H. Filipek, C. S.E. Papp
US Geological Survey Toxic Substances Hydrology Program: Proceedings of the technical meeting, Phoenix, Arizona, September 26-30, 1988 US Geological Survey Toxic Substances Hydrology Program: Proceedings of the technical meeting, Phoenix, Arizona, September 26-30, 1988
Crude oil floating at the surface of a shallow aquifer of glacial outwash, near Bemidji, Minnesota, is altered by geochemical processes. Hydrocarbons from the oil are attenuated by several reactions that include aerobic and anaerobic microbial degradation. These degradation reactions result in the development of geochemical facies in the shallow groundwater system. Groundwater most...
Some effects of acid mine drainage on Clear Creek, Colorado Some effects of acid mine drainage on Clear Creek, Colorado
No abstract available.
Authors
W. H. Ficklin, K. S. Smith, Katherine Walton-Day
Non-USGS Publications**
Day, K.W., 1986, Determination of processes controlling vertical trace element distribution in Filson Creek bog, Lake County, Minnesota: Golden, Colorado School of Mines, M.S. thesis # 3149, 236 p.
Walton-Day, Katherine, 1991, Hydrology and geochemistry of a natural wetland affected by acid mine drainage, St. Kevin Gulch, Lake County, Colorado: Golden, Colorado School of Mines, Ph.D. dissertation # 4033, 299 p.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 16
No Result Found
Filter Total Items: 72
Geochemistry of sediments from coastal marshes of Louisiana Geochemistry of sediments from coastal marshes of Louisiana
As a part of the U.S. Geological Survey Global Change and Climate History Program we have been studying the biogeochemistry of coastal marshes in Terrebonne Basin, Louisiana. Louisiana has about 40 percent of the coastal wetlands in the conterminous U.S. and it is losing wetlands at one of the highest rates in the U.S. with the conversion of about 65 km2/yr of marsh to open water...
Authors
L. L. Jackson, Laurie S. Balistrieri, K. S. Smith, Katherine Walton-Day, D.L. Kirshcenman, P.S. Briggs, D.L. Fey, S. J. Sutley
U.S .Geological Survey toxic substance hydrology program: Proceedings of the technical meeting, Monterey, California, March 11-15, 1991 U.S .Geological Survey toxic substance hydrology program: Proceedings of the technical meeting, Monterey, California, March 11-15, 1991
No abstract available.
Authors
D. A. Aronson
By
Water Resources Mission Area, Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program, Central Midwest Water Science Center, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center, Central Plains Water Science Center, Reston Biogeochemical Processes in Groundwater Laboratory
Field methods for measurement of ground water redox chemical parameters Field methods for measurement of ground water redox chemical parameters
An inexpensive, versatile, and portable system is presented, which facilitates rapid field determinations of redox potentials, pH, conductivity, ferrous and total iron, nitrite, specific conductance, dissolved oxygen, and temperature. Accuracy is facilitated by on‐site measurements of most parameters using specially constructed flow‐through cells and, for several analyses, sealed reagent...
Authors
Katherine Walton-Day, Donald L. Macalady, Myron H. Brooks, Vernon T. Tate
Mechanisms controlling Cu, Fe, Mn, and Co profiles in peat of the Filson Creek Fen, northeastern Minnesota Mechanisms controlling Cu, Fe, Mn, and Co profiles in peat of the Filson Creek Fen, northeastern Minnesota
Filson Creek Fen, located in northeastern Minnesota, overlies a Cu-Ni sulfide deposit. A site in the fen was studied to evaluate the hydrogeochemical mechanisms governing the development of Fe, Mn, Co, and Cu profiles in the peat. At the study site, surface peat approximately 1 m thick is separated from the underlying mineralized bedrock by a 6–12 m thickness of lake and glaciofluvial...
Authors
K. Walton-Day, L.H. Filipek, C. S.E. Papp
US Geological Survey Toxic Substances Hydrology Program: Proceedings of the technical meeting, Phoenix, Arizona, September 26-30, 1988 US Geological Survey Toxic Substances Hydrology Program: Proceedings of the technical meeting, Phoenix, Arizona, September 26-30, 1988
Crude oil floating at the surface of a shallow aquifer of glacial outwash, near Bemidji, Minnesota, is altered by geochemical processes. Hydrocarbons from the oil are attenuated by several reactions that include aerobic and anaerobic microbial degradation. These degradation reactions result in the development of geochemical facies in the shallow groundwater system. Groundwater most...
Some effects of acid mine drainage on Clear Creek, Colorado Some effects of acid mine drainage on Clear Creek, Colorado
No abstract available.
Authors
W. H. Ficklin, K. S. Smith, Katherine Walton-Day
Non-USGS Publications**
Day, K.W., 1986, Determination of processes controlling vertical trace element distribution in Filson Creek bog, Lake County, Minnesota: Golden, Colorado School of Mines, M.S. thesis # 3149, 236 p.
Walton-Day, Katherine, 1991, Hydrology and geochemistry of a natural wetland affected by acid mine drainage, St. Kevin Gulch, Lake County, Colorado: Golden, Colorado School of Mines, Ph.D. dissertation # 4033, 299 p.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.