James A Smith
James A Smith is a Geophysicist with the Earthquake Hazards Program.
Science and Products
Filter Total Items: 89
Geology and geothermal potential of Alid volcanic center, Eritrea, Africa Geology and geothermal potential of Alid volcanic center, Eritrea, Africa
Alid volcanic center, a 700-meter-tall mountain in Eritrea, northeast Africa, straddles the axis of an active crustal-spreading center called the Danakil Depression. Boiling-temperature fumaroles are common on Alid, and their gas compositions indicate a reservoir temperature of at least 250 ??C. The history of volcanism and the high reservoir temperature indicated by the Alid fumarole...
Authors
Michael A. Clynne, Wendell A. Duffield, Robert O. Fournier, Leake W. Giorgis, Cathy J. Janik, Gabreab Kahsai, Jacob Lowenstern, Kidane W. Mariam, James G. Smith, Theoderos Tesfai
Effect of Triton X-100 on the rate of trichloroethene desorption from soil to water Effect of Triton X-100 on the rate of trichloroethene desorption from soil to water
No abstract available.
Authors
James J. Deitsch, James A. Smith
Simulating the volatilization of solvents in unsaturated soils during laboratory and field infiltration experiments Simulating the volatilization of solvents in unsaturated soils during laboratory and field infiltration experiments
This paper describes laboratory and field experiments which were conducted to study the dynamics of trichloroethylene (TCE) as it volatilized from contaminated groundwater and diffused in the presence of infiltrating water through the unsaturated soil zone to the land surface. The field experiments were conducted at the Picatinny Arsenal, which is part of the United States Geological...
Authors
H. Jean Cho, Peter R. Jaffe, James A. Smith
Geologic map of the Nabesna B-6 quadrangle, south-central Alaska Geologic map of the Nabesna B-6 quadrangle, south-central Alaska
No abstract available.
Authors
Donald H. Richter, James G. Smith, H. R. Schmoll, R. L. Smith
Sampling vadose-zone water for a volatile organic compound at Picatinny Arsenal, New Jersey Sampling vadose-zone water for a volatile organic compound at Picatinny Arsenal, New Jersey
A new method of collecting samples of unsaturated-zone water for quantitative analysis for a volatile organic compound, trichloroethene (TCE), was compared to three other, previously described sampling methodologies in the laboratory and in the field. In the laboratory, prepared water samples containing TCE in a known concentration (20 µg/L) were sampled repeatedly by using each of the...
Authors
James A. Smith, H. Jean Cho, Peter R. Jaffe, Cecilia L. MacLeod, Susan A. Koehnlein
Hydraulic conductivity of landfill liners containing benzyltriethylammonium-bentonite Hydraulic conductivity of landfill liners containing benzyltriethylammonium-bentonite
Varying weight percentages of an Ottawa sand, benzyltriethylammonium-bentonite (BTEA-clay), Wyoming bentonite (Na-clay), and water were mixed uniformly and compacted to simulate sand-and-clay liners for waste-disposal facilities. The hydraulic conductivities of the compacted soil cores were measured in triplicate. The hydraulic conductivities of cores containing 92 percent sand and 8...
Authors
James A. Smith, Pamela M. Franklin, Peter R. Jaffe
Non-USGS Publications**
**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: 89
Geology and geothermal potential of Alid volcanic center, Eritrea, Africa Geology and geothermal potential of Alid volcanic center, Eritrea, Africa
Alid volcanic center, a 700-meter-tall mountain in Eritrea, northeast Africa, straddles the axis of an active crustal-spreading center called the Danakil Depression. Boiling-temperature fumaroles are common on Alid, and their gas compositions indicate a reservoir temperature of at least 250 ??C. The history of volcanism and the high reservoir temperature indicated by the Alid fumarole...
Authors
Michael A. Clynne, Wendell A. Duffield, Robert O. Fournier, Leake W. Giorgis, Cathy J. Janik, Gabreab Kahsai, Jacob Lowenstern, Kidane W. Mariam, James G. Smith, Theoderos Tesfai
Effect of Triton X-100 on the rate of trichloroethene desorption from soil to water Effect of Triton X-100 on the rate of trichloroethene desorption from soil to water
No abstract available.
Authors
James J. Deitsch, James A. Smith
Simulating the volatilization of solvents in unsaturated soils during laboratory and field infiltration experiments Simulating the volatilization of solvents in unsaturated soils during laboratory and field infiltration experiments
This paper describes laboratory and field experiments which were conducted to study the dynamics of trichloroethylene (TCE) as it volatilized from contaminated groundwater and diffused in the presence of infiltrating water through the unsaturated soil zone to the land surface. The field experiments were conducted at the Picatinny Arsenal, which is part of the United States Geological...
Authors
H. Jean Cho, Peter R. Jaffe, James A. Smith
Geologic map of the Nabesna B-6 quadrangle, south-central Alaska Geologic map of the Nabesna B-6 quadrangle, south-central Alaska
No abstract available.
Authors
Donald H. Richter, James G. Smith, H. R. Schmoll, R. L. Smith
Sampling vadose-zone water for a volatile organic compound at Picatinny Arsenal, New Jersey Sampling vadose-zone water for a volatile organic compound at Picatinny Arsenal, New Jersey
A new method of collecting samples of unsaturated-zone water for quantitative analysis for a volatile organic compound, trichloroethene (TCE), was compared to three other, previously described sampling methodologies in the laboratory and in the field. In the laboratory, prepared water samples containing TCE in a known concentration (20 µg/L) were sampled repeatedly by using each of the...
Authors
James A. Smith, H. Jean Cho, Peter R. Jaffe, Cecilia L. MacLeod, Susan A. Koehnlein
Hydraulic conductivity of landfill liners containing benzyltriethylammonium-bentonite Hydraulic conductivity of landfill liners containing benzyltriethylammonium-bentonite
Varying weight percentages of an Ottawa sand, benzyltriethylammonium-bentonite (BTEA-clay), Wyoming bentonite (Na-clay), and water were mixed uniformly and compacted to simulate sand-and-clay liners for waste-disposal facilities. The hydraulic conductivities of the compacted soil cores were measured in triplicate. The hydraulic conductivities of cores containing 92 percent sand and 8...
Authors
James A. Smith, Pamela M. Franklin, Peter R. Jaffe
Non-USGS Publications**
**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.