David Hill (Former Employee)
Science and Products
Filter Total Items: 65
Gas shale in the Rocky Mountains and beyond Gas shale in the Rocky Mountains and beyond
This guidebook includes papers on various aspects of resource evaluation, exploration, petrophysics, reservoir potential, well deliverability and drilling and completion technology. As new shale plays are explored for and developed, it is important to learn from analogs and case histories, including those from outside the Rocky Mountain region. While the emphasis is on natural gas, we...
Update on North America shale-gas exploration and development Update on North America shale-gas exploration and development
No abstract available.
Authors
David G. Hill, John B. Curtis, Paul G. Lillis
Origin, conditions, and timing of gas generation in the Lewis Shale, San Juan Basin, New Mexico Origin, conditions, and timing of gas generation in the Lewis Shale, San Juan Basin, New Mexico
No abstract available.
Authors
Neil S. Fishman, Thomas Parris, Donald L. Hall, Paul G. Lillis, Mark J. Pawlewicz
Converting NAD83 GPS Heights Into NAVD88 Elevations With LVGEOID, a Hybrid Geoid Height Model for the Long Valley Volcanic Region, California Converting NAD83 GPS Heights Into NAVD88 Elevations With LVGEOID, a Hybrid Geoid Height Model for the Long Valley Volcanic Region, California
A GPS survey of leveling benchmarks done in Long Valley Caldera in 1999 showed that the application of the National Geodetic Survey (NGS) geoid model GEOID99 to tie GPS heights to historical leveling measurements would significantly underestimate the caldera ground deformation (known from other geodetic measurements). The NGS geoid model was able to correctly reproduce the shape of the...
Authors
Maurizio Battaglia, Daniel Dzurisin, John O. Langbein, Jerry Svarc, David P. Hill
Dynamic stresses, Coulomb failure, and remote triggering Dynamic stresses, Coulomb failure, and remote triggering
Dynamic stresses associated with crustal surface waves with 15-30-sec periods and peak amplitudes 1 MPa are capable of triggering seismicity at sites remote from the generating mainshock under appropriate conditions. Coulomb failure models based on a frictional strength threshold offer one explanation for instances of rapid-onset triggered seismicity that develop during the surface-wave...
Authors
David P. Hill
Unrest in Long Valley Caldera, California, 1978-2004 Unrest in Long Valley Caldera, California, 1978-2004
Long Valley Caldera and the Mono-Inyo Domes volcanic field in eastern California lie in a left-stepping offset along the eastern escarpment of the Sierra Nevada, at the northern end of the Owens Valley and the western margin of the Basin and Range Province. Over the last 4 Ma, this volcanic field has produced multiple volcanic eruptions, including the caldera-forming eruption at 760 000...
Authors
David P. Hill
Science and Products
Filter Total Items: 65
Gas shale in the Rocky Mountains and beyond Gas shale in the Rocky Mountains and beyond
This guidebook includes papers on various aspects of resource evaluation, exploration, petrophysics, reservoir potential, well deliverability and drilling and completion technology. As new shale plays are explored for and developed, it is important to learn from analogs and case histories, including those from outside the Rocky Mountain region. While the emphasis is on natural gas, we...
Update on North America shale-gas exploration and development Update on North America shale-gas exploration and development
No abstract available.
Authors
David G. Hill, John B. Curtis, Paul G. Lillis
Origin, conditions, and timing of gas generation in the Lewis Shale, San Juan Basin, New Mexico Origin, conditions, and timing of gas generation in the Lewis Shale, San Juan Basin, New Mexico
No abstract available.
Authors
Neil S. Fishman, Thomas Parris, Donald L. Hall, Paul G. Lillis, Mark J. Pawlewicz
Converting NAD83 GPS Heights Into NAVD88 Elevations With LVGEOID, a Hybrid Geoid Height Model for the Long Valley Volcanic Region, California Converting NAD83 GPS Heights Into NAVD88 Elevations With LVGEOID, a Hybrid Geoid Height Model for the Long Valley Volcanic Region, California
A GPS survey of leveling benchmarks done in Long Valley Caldera in 1999 showed that the application of the National Geodetic Survey (NGS) geoid model GEOID99 to tie GPS heights to historical leveling measurements would significantly underestimate the caldera ground deformation (known from other geodetic measurements). The NGS geoid model was able to correctly reproduce the shape of the...
Authors
Maurizio Battaglia, Daniel Dzurisin, John O. Langbein, Jerry Svarc, David P. Hill
Dynamic stresses, Coulomb failure, and remote triggering Dynamic stresses, Coulomb failure, and remote triggering
Dynamic stresses associated with crustal surface waves with 15-30-sec periods and peak amplitudes 1 MPa are capable of triggering seismicity at sites remote from the generating mainshock under appropriate conditions. Coulomb failure models based on a frictional strength threshold offer one explanation for instances of rapid-onset triggered seismicity that develop during the surface-wave...
Authors
David P. Hill
Unrest in Long Valley Caldera, California, 1978-2004 Unrest in Long Valley Caldera, California, 1978-2004
Long Valley Caldera and the Mono-Inyo Domes volcanic field in eastern California lie in a left-stepping offset along the eastern escarpment of the Sierra Nevada, at the northern end of the Owens Valley and the western margin of the Basin and Range Province. Over the last 4 Ma, this volcanic field has produced multiple volcanic eruptions, including the caldera-forming eruption at 760 000...
Authors
David P. 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