James F Howle
James F Howle - California Water Science Center
Science and Products
Filter Total Items: 29
Hydrologic data for Long Valley Caldera, Mono County, California, 1994-96
Hydrologic data were collected during 1994-96 as part of the U.S. Geological Survey's long-term Volcanic Hazards Monitoring Program of the Long Valley Caldera, Mono County, California, and the Long Valley Hydrologic Advisory Committee monitoring program. Hydrologic data collected include continuous record of ground-water levels in 4 wells; instantaneous measurements of ground-water levels in 53 we
Authors
James F. Howle, Christopher D. Farrar
Vertical-deformation, water-level, microgravity, geodetic, water-chemistry, and flow-rate data collected during injection, storage, and recovery tests at Lancaster, Antelope Valley, California, September 1995 through September 1998
A series of freshwater injection, storage, and recovery tests were conducted from September 1995 through September 1998 to evaluate the feasibility of artificially recharging ground water in the Lancaster area of the Antelope Valley, California. The tests used two production wells at a well field located in the southern part of the city of Lancaster. Monitoring networks were established at or in t
Authors
Loren F. Metzger, Marti E. Ikehara, James F. Howle
Magmatic carbon dioxide emissions at Mammoth Mountain, California
Carbon dioxide (CO2) of magmatic origin is seeping out of the ground in unusual quantities at several locations around the flanks of Mammoth Mountain, a dormant volcano in Eastern California. The most recent volcanic activity on Mammoth Mountain was steam eruptions about 600 years ago, but seismic swarms and long-period earthquakes over the past decade are evidence of an active magmatic system at
Authors
Christopher D. Farrar, John M. Neil, James F. Howle
Hydrologic data for Long Valley Caldera, Mono County, California, 1987-93
Hydrologic data were collected during 1987-93 as part of the U.S. Geological Survey's long-term Volcanic Hazards Monitoring Program of the Long Valley Caldera, Mono County, California. The data are presented in graphs or tables. Data collected for the Long Valley Hydrologic Advisory Committee monitoring program also are presented. Hydrologic data collected include continuous record of ground-water
Authors
J. F. Howle, C. D. Farrar
Forest-killing diffuse CO2 emission at Mammoth Mountain as a sign of magmatic unrest
Mammoth Mountain, in the western United States, is a large dacitic volcano with a long history of volcanism that began 200 kyr ago and produced phreatic eruptions as recently as 500 ± 200 yr BP. Seismicity, ground deformation and changes in fumarole gas composition suggested an episode of shallow dyke intrusion in 1989–90. Areas of dying forest and incidents of near asphyxia in confined spaces, fi
Authors
C. D. Farrar, M. L. Sorey, William C. Evans, J. F. Howle, B.D. Kerr, B. M. Kennedy, C. -Y. King, J. R. Southon
Science and Products
Filter Total Items: 29
Hydrologic data for Long Valley Caldera, Mono County, California, 1994-96
Hydrologic data were collected during 1994-96 as part of the U.S. Geological Survey's long-term Volcanic Hazards Monitoring Program of the Long Valley Caldera, Mono County, California, and the Long Valley Hydrologic Advisory Committee monitoring program. Hydrologic data collected include continuous record of ground-water levels in 4 wells; instantaneous measurements of ground-water levels in 53 we
Authors
James F. Howle, Christopher D. Farrar
Vertical-deformation, water-level, microgravity, geodetic, water-chemistry, and flow-rate data collected during injection, storage, and recovery tests at Lancaster, Antelope Valley, California, September 1995 through September 1998
A series of freshwater injection, storage, and recovery tests were conducted from September 1995 through September 1998 to evaluate the feasibility of artificially recharging ground water in the Lancaster area of the Antelope Valley, California. The tests used two production wells at a well field located in the southern part of the city of Lancaster. Monitoring networks were established at or in t
Authors
Loren F. Metzger, Marti E. Ikehara, James F. Howle
Magmatic carbon dioxide emissions at Mammoth Mountain, California
Carbon dioxide (CO2) of magmatic origin is seeping out of the ground in unusual quantities at several locations around the flanks of Mammoth Mountain, a dormant volcano in Eastern California. The most recent volcanic activity on Mammoth Mountain was steam eruptions about 600 years ago, but seismic swarms and long-period earthquakes over the past decade are evidence of an active magmatic system at
Authors
Christopher D. Farrar, John M. Neil, James F. Howle
Hydrologic data for Long Valley Caldera, Mono County, California, 1987-93
Hydrologic data were collected during 1987-93 as part of the U.S. Geological Survey's long-term Volcanic Hazards Monitoring Program of the Long Valley Caldera, Mono County, California. The data are presented in graphs or tables. Data collected for the Long Valley Hydrologic Advisory Committee monitoring program also are presented. Hydrologic data collected include continuous record of ground-water
Authors
J. F. Howle, C. D. Farrar
Forest-killing diffuse CO2 emission at Mammoth Mountain as a sign of magmatic unrest
Mammoth Mountain, in the western United States, is a large dacitic volcano with a long history of volcanism that began 200 kyr ago and produced phreatic eruptions as recently as 500 ± 200 yr BP. Seismicity, ground deformation and changes in fumarole gas composition suggested an episode of shallow dyke intrusion in 1989–90. Areas of dying forest and incidents of near asphyxia in confined spaces, fi
Authors
C. D. Farrar, M. L. Sorey, William C. Evans, J. F. Howle, B.D. Kerr, B. M. Kennedy, C. -Y. King, J. R. Southon