Andrew Best Lockhart (Former Employee)
Science and Products
Seismic-monitoring changes and the remote deployment of seismic stations (seismic spider) at Mount St. Helens, 2004-2005 Seismic-monitoring changes and the remote deployment of seismic stations (seismic spider) at Mount St. Helens, 2004-2005
The instruments in place at the start of volcanic unrest at Mount St. Helens in 2004 were inadequate to record the large earthquakes and monitor the explosions that occurred as the eruption developed. To remedy this, new instruments were deployed and the short-period seismic network was modified. A new method of establishing near-field seismic monitoring was developed, using remote
Authors
Patrick J. McChesney, Marvin R. Couchman, Seth C. Moran, Andrew B. Lockhart, Kelly J. Swinford, Richard G. LaHusen
Seismicity and infrasound associated with explosions at Mount St. Helens, 2004-2005 Seismicity and infrasound associated with explosions at Mount St. Helens, 2004-2005
Six explosions occurred during 2004-5 in association with renewed eruptive activity at Mount St. Helens, Washington. Of four explosions in October 2004, none had precursory seismicity and two had explosion-related seismic tremor that marked the end of the explosion. However, seismicity levels dropped following each of the October explosions, providing the primary instrumental means for
Authors
Seth C. Moran, Patrick J. McChesney, Andrew B. Lockhart
Catalog of earthquake hypocenters at Alaskan volcanoes: January 1, 1994 through December 31, 1999 Catalog of earthquake hypocenters at Alaskan volcanoes: January 1, 1994 through December 31, 1999
The Alaska Volcano Observatory (AVO), a cooperative program of the U.S. Geological Survey, the Geophysical Institute of the University of Alaska - Fairbanks, and the Alaska Division of Geological and Geophysical Surveys, has maintained a seismic monitoring program at potentially active volcanoes in Alaska since 1988 (Power and others, 1993; Jolly and others, 1996). The primary objectives...
Authors
Arthur D. Jolly, Scott D. Stihler, John A. Power, John C. Lahr, John Paskievitch, Guy Tytgat, Steve Estes, Andrew B. Lockhart, Seth C. Moran, Stephen R. McNutt, William R. Hammond
The USGS/USAID Volcano Disaster Assistance Program; the next five years The USGS/USAID Volcano Disaster Assistance Program; the next five years
No abstract available.
Authors
C. Dan Miller, John W. Ewert, Andrew B. Lockhart
Science and Products
Seismic-monitoring changes and the remote deployment of seismic stations (seismic spider) at Mount St. Helens, 2004-2005 Seismic-monitoring changes and the remote deployment of seismic stations (seismic spider) at Mount St. Helens, 2004-2005
The instruments in place at the start of volcanic unrest at Mount St. Helens in 2004 were inadequate to record the large earthquakes and monitor the explosions that occurred as the eruption developed. To remedy this, new instruments were deployed and the short-period seismic network was modified. A new method of establishing near-field seismic monitoring was developed, using remote
Authors
Patrick J. McChesney, Marvin R. Couchman, Seth C. Moran, Andrew B. Lockhart, Kelly J. Swinford, Richard G. LaHusen
Seismicity and infrasound associated with explosions at Mount St. Helens, 2004-2005 Seismicity and infrasound associated with explosions at Mount St. Helens, 2004-2005
Six explosions occurred during 2004-5 in association with renewed eruptive activity at Mount St. Helens, Washington. Of four explosions in October 2004, none had precursory seismicity and two had explosion-related seismic tremor that marked the end of the explosion. However, seismicity levels dropped following each of the October explosions, providing the primary instrumental means for
Authors
Seth C. Moran, Patrick J. McChesney, Andrew B. Lockhart
Catalog of earthquake hypocenters at Alaskan volcanoes: January 1, 1994 through December 31, 1999 Catalog of earthquake hypocenters at Alaskan volcanoes: January 1, 1994 through December 31, 1999
The Alaska Volcano Observatory (AVO), a cooperative program of the U.S. Geological Survey, the Geophysical Institute of the University of Alaska - Fairbanks, and the Alaska Division of Geological and Geophysical Surveys, has maintained a seismic monitoring program at potentially active volcanoes in Alaska since 1988 (Power and others, 1993; Jolly and others, 1996). The primary objectives...
Authors
Arthur D. Jolly, Scott D. Stihler, John A. Power, John C. Lahr, John Paskievitch, Guy Tytgat, Steve Estes, Andrew B. Lockhart, Seth C. Moran, Stephen R. McNutt, William R. Hammond
The USGS/USAID Volcano Disaster Assistance Program; the next five years The USGS/USAID Volcano Disaster Assistance Program; the next five years
No abstract available.
Authors
C. Dan Miller, John W. Ewert, Andrew B. Lockhart