David Hill (Former Employee)
Science and Products
Filter Total Items: 65
Living with a restless caldera: Long Valley, California Living with a restless caldera: Long Valley, California
No abstract available.
Authors
David Hill, Roy Bailey, Michael Sorey, James Hendley, Peter Stauffer
Earthquakes and carbon dioxide beneath Mammoth Mountain, California Earthquakes and carbon dioxide beneath Mammoth Mountain, California
No abstract available.
Authors
David Hill
Invisible CO2 gas killing trees at Mammoth Mountain, California Invisible CO2 gas killing trees at Mammoth Mountain, California
Since 1980, scientists have monitored geologic unrest in Long Valley Caldera and at adjacent Mammoth Mountain, California. After a persistent swarm of earthquakes beneath Mammoth Mountain in 1989, earth scientists discovered that large volumes of carbon dioxide (CO2) gas were seeping from beneath this volcano. This gas is killing trees on the mountain and also can be a danger to people...
Authors
Michael Sorey, Christopher Farrar, William Evans, David Hill, Roy Bailey, James Hendley, Peter Stauffer
Long-period earthquakes in the Long Valley Caldera Region, eastern California Long-period earthquakes in the Long Valley Caldera Region, eastern California
Most earthquakes occurring near Long Valley caldera since the onset of recurring swarm activity in 1980 have the broad-band signature typical of tectonic or volcano-tectonic earthquakes with impulsive, high-frequency P and S waves. With the Mammoth Mountain earthquake swarm in mid 1989, we began detecting occasional events with a marked deficiency in energy above 5 Hz, a feature typical...
Authors
Andrew M. Pitt, David Hill
The Loma Prieta, California, earthquake of October 17, 1989: Preseismic observations The Loma Prieta, California, earthquake of October 17, 1989: Preseismic observations
The October 17, 1989, Loma Prieta, Calif., Ms=7.1 earthquake provided the first opportunity in the history of fault monitoring in the United States to gather multidisciplinary preearthquake data in the near field of an M=7 earthquake. The data obtained include observations on seismicity, continuous strain, long-term ground displacement, magnetic field, and hydrology. The papers in this...
Authors
Malcolm Johnston, Jean Olson, David Hill, Anthony Fraser-Smith, Arman Bernardi, Robert Helliwell, Paul McGill, O.G. Villard, Robert Mueller, Randall White, William Ellsworth, Evelyn Roeloffs, Alan Linde, M. Gladwin, R. Gwyther, R.H.G. Hart, Michael Lisowski, James Savage, William Prescott, Jerry Svarc, Mark Murray, P.G. Silver, N. Valette-Silver, Olga Kolbek
Data report for the August 1982 seismic-refraction experiment in the Mono Craters-Long Valley region, California Data report for the August 1982 seismic-refraction experiment in the Mono Craters-Long Valley region, California
No abstract available.
Authors
Patricia Meador, David Hill
Proceedings of the Second Joint Meeting of the U.S.-Japan Conference on Natural Resources (UJNR) Panel on Earthquake Prediction Technology, July 13-17, 1981 Proceedings of the Second Joint Meeting of the U.S.-Japan Conference on Natural Resources (UJNR) Panel on Earthquake Prediction Technology, July 13-17, 1981
The Second Joint Meeting of the UJNR Panel on Earthquake Prediction Technology was held at the U.S. Geological Survey facilities in Menlo Park, California, during the week of July 13, 1981. This panel, which was established in 1978, is the newest of 17 panels under the United States/Japan Cooperative Program in National Resources (UJNR). The UJNR program is based on a 1964 cabinet-level...
Authors
David P. Hill, Keiji Nishimura
U.S. Geological Survey role in earthquake prediction U.S. Geological Survey role in earthquake prediction
Work in the Seismology Branch on the problem of earthquake prediction is based primarily on the recording and analysis of seismic (elastic) waves in the Earth generated either by earthquakes themselves or by artificial sources such as quarry blasts or explosions detonated in drill holes. At the present time this work is still very much a research effort focused largely on earthquake...
Authors
David Hill
Compilation of the data from the 1978 Hawaii seismic refraction experiment on the west flank of Mauna Loa Compilation of the data from the 1978 Hawaii seismic refraction experiment on the west flank of Mauna Loa
In October 1978 (J.D. 286), the U.S. Geological Survey (USGS) established a seismic refraction line perpendicular to the Kona coast of Hawaii (Fig. 1). The purpose of the experiment was to define the crustal structure of the Kona coast and its relationship to the tectonics of Mauna Loa volcano. This open-file report describes the experiment and presents the data without interpretation. A...
Authors
John Zucca, David Hill
A compilation of the data from the 1976 Hawaii seismic refraction experiment A compilation of the data from the 1976 Hawaii seismic refraction experiment
No abstract available.
Authors
John Zucca, David Hill, Fred Duennebier
A compilation of data from the July, 1976 Oroville, California seismic-refraction experiment A compilation of data from the July, 1976 Oroville, California seismic-refraction experiment
The August 1, 1975, Oroville, California, earthquake (Mb = 5.7) and its aftershocks focused considerable interest on current tectonic processes operating in the western foothills of the Sierra Nevada range. As part of an intensive study of this earthquake sequence, the United States Geological Survey with support from the California Department of Water Resources conducted a seismic...
Authors
Mary Spieth, David Hill
Physical constraints on sounds generated by very small earthquakes Physical constraints on sounds generated by very small earthquakes
No abstract available.
Authors
David Hill
Science and Products
Filter Total Items: 65
Living with a restless caldera: Long Valley, California Living with a restless caldera: Long Valley, California
No abstract available.
Authors
David Hill, Roy Bailey, Michael Sorey, James Hendley, Peter Stauffer
Earthquakes and carbon dioxide beneath Mammoth Mountain, California Earthquakes and carbon dioxide beneath Mammoth Mountain, California
No abstract available.
Authors
David Hill
Invisible CO2 gas killing trees at Mammoth Mountain, California Invisible CO2 gas killing trees at Mammoth Mountain, California
Since 1980, scientists have monitored geologic unrest in Long Valley Caldera and at adjacent Mammoth Mountain, California. After a persistent swarm of earthquakes beneath Mammoth Mountain in 1989, earth scientists discovered that large volumes of carbon dioxide (CO2) gas were seeping from beneath this volcano. This gas is killing trees on the mountain and also can be a danger to people...
Authors
Michael Sorey, Christopher Farrar, William Evans, David Hill, Roy Bailey, James Hendley, Peter Stauffer
Long-period earthquakes in the Long Valley Caldera Region, eastern California Long-period earthquakes in the Long Valley Caldera Region, eastern California
Most earthquakes occurring near Long Valley caldera since the onset of recurring swarm activity in 1980 have the broad-band signature typical of tectonic or volcano-tectonic earthquakes with impulsive, high-frequency P and S waves. With the Mammoth Mountain earthquake swarm in mid 1989, we began detecting occasional events with a marked deficiency in energy above 5 Hz, a feature typical...
Authors
Andrew M. Pitt, David Hill
The Loma Prieta, California, earthquake of October 17, 1989: Preseismic observations The Loma Prieta, California, earthquake of October 17, 1989: Preseismic observations
The October 17, 1989, Loma Prieta, Calif., Ms=7.1 earthquake provided the first opportunity in the history of fault monitoring in the United States to gather multidisciplinary preearthquake data in the near field of an M=7 earthquake. The data obtained include observations on seismicity, continuous strain, long-term ground displacement, magnetic field, and hydrology. The papers in this...
Authors
Malcolm Johnston, Jean Olson, David Hill, Anthony Fraser-Smith, Arman Bernardi, Robert Helliwell, Paul McGill, O.G. Villard, Robert Mueller, Randall White, William Ellsworth, Evelyn Roeloffs, Alan Linde, M. Gladwin, R. Gwyther, R.H.G. Hart, Michael Lisowski, James Savage, William Prescott, Jerry Svarc, Mark Murray, P.G. Silver, N. Valette-Silver, Olga Kolbek
Data report for the August 1982 seismic-refraction experiment in the Mono Craters-Long Valley region, California Data report for the August 1982 seismic-refraction experiment in the Mono Craters-Long Valley region, California
No abstract available.
Authors
Patricia Meador, David Hill
Proceedings of the Second Joint Meeting of the U.S.-Japan Conference on Natural Resources (UJNR) Panel on Earthquake Prediction Technology, July 13-17, 1981 Proceedings of the Second Joint Meeting of the U.S.-Japan Conference on Natural Resources (UJNR) Panel on Earthquake Prediction Technology, July 13-17, 1981
The Second Joint Meeting of the UJNR Panel on Earthquake Prediction Technology was held at the U.S. Geological Survey facilities in Menlo Park, California, during the week of July 13, 1981. This panel, which was established in 1978, is the newest of 17 panels under the United States/Japan Cooperative Program in National Resources (UJNR). The UJNR program is based on a 1964 cabinet-level...
Authors
David P. Hill, Keiji Nishimura
U.S. Geological Survey role in earthquake prediction U.S. Geological Survey role in earthquake prediction
Work in the Seismology Branch on the problem of earthquake prediction is based primarily on the recording and analysis of seismic (elastic) waves in the Earth generated either by earthquakes themselves or by artificial sources such as quarry blasts or explosions detonated in drill holes. At the present time this work is still very much a research effort focused largely on earthquake...
Authors
David Hill
Compilation of the data from the 1978 Hawaii seismic refraction experiment on the west flank of Mauna Loa Compilation of the data from the 1978 Hawaii seismic refraction experiment on the west flank of Mauna Loa
In October 1978 (J.D. 286), the U.S. Geological Survey (USGS) established a seismic refraction line perpendicular to the Kona coast of Hawaii (Fig. 1). The purpose of the experiment was to define the crustal structure of the Kona coast and its relationship to the tectonics of Mauna Loa volcano. This open-file report describes the experiment and presents the data without interpretation. A...
Authors
John Zucca, David Hill
A compilation of the data from the 1976 Hawaii seismic refraction experiment A compilation of the data from the 1976 Hawaii seismic refraction experiment
No abstract available.
Authors
John Zucca, David Hill, Fred Duennebier
A compilation of data from the July, 1976 Oroville, California seismic-refraction experiment A compilation of data from the July, 1976 Oroville, California seismic-refraction experiment
The August 1, 1975, Oroville, California, earthquake (Mb = 5.7) and its aftershocks focused considerable interest on current tectonic processes operating in the western foothills of the Sierra Nevada range. As part of an intensive study of this earthquake sequence, the United States Geological Survey with support from the California Department of Water Resources conducted a seismic...
Authors
Mary Spieth, David Hill
Physical constraints on sounds generated by very small earthquakes Physical constraints on sounds generated by very small earthquakes
No abstract available.
Authors
David Hill
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government