John A. Power (Former Employee)
Science and Products
Filter Total Items: 88
Capturing, preserving and digitizing legacy seismic data from the Montserrat Volcano Observatory analog seismic network, July 1995 – December 2004 Capturing, preserving and digitizing legacy seismic data from the Montserrat Volcano Observatory analog seismic network, July 1995 – December 2004
An eruption of the Soufrière Hills Volcano (SHV) on the eastern Caribbean island of Montserrat began on 18 July 1995 and continued until February 2010. Within nine days of the eruption onset, an existing four‐station analog seismic network (ASN) was expanded to 10 sites. Telemetered data from this network were recorded, processed, and archived locally using a system developed by...
Authors
Glenn Thompson, John Power, Jochen Braunmiller, Andrew Lockhart, Lloyd Lynch, Wendy McCausland, Charlotte Rowe, Thomas Shea, Randall A. White, Charles Breithaupt
Linking subsurface to surface using gas emission and melt inclusion data at Mount Cleveland volcano, Alaska Linking subsurface to surface using gas emission and melt inclusion data at Mount Cleveland volcano, Alaska
Mount Cleveland is one of Alaska's most active volcanoes, yet little is known about the magmatic system driving persistent and dynamic volcanic activity. Volcanic gas and melt inclusion (MI) data from 2016 were combined to investigate shallow magmatic processes. SO2 emission rates were between 166 and 324 t/day and the H2O/SO2 was 600 ± 53, whereas CO2 and H2S were below detection...
Authors
Cynthia Werner, Daniel J. Rasmussen, Terry Plank, Peter J. Kelly, Christoph Kern, Taryn Lopez, Jonas Gliss, John Power, Diana Roman, Pavel Izbekov, John J. Lyons
Seismic character and progression of explosive activity during the 2016-2017 eruption of Bogoslof volcano, Alaska Seismic character and progression of explosive activity during the 2016-2017 eruption of Bogoslof volcano, Alaska
Bogoslof volcano, in the central Aleutian arc, experienced a major eruption between December 2016 and August 2017 that was characterized by explosive activity (VEI 2 to 3) and the extrusion of lava domes. The Alaska Volcano Observatory tracked the activity in real-time using seismicity observed on distant stations as well as infrasound, lightning, satellite data, and occasional visual
Authors
Cheryl Searcy, John Power
Goals and development of the Alaska Volcano Observatory Seismic Network and application to forecasting and detecting volcanic eruptions Goals and development of the Alaska Volcano Observatory Seismic Network and application to forecasting and detecting volcanic eruptions
The Alaska Volcano Observatory (AVO) seismic network has been in operation since 1988 and during this time has grown from 29 to 217 seismic stations providing real-time monitoring of 32 active volcanoes in Alaska, as well as useful data for regional earthquake monitoring. Since 1988, AVO has detected 59 volcanic eruptions at Aleutian arc volcanoes, and 31 of these have been captured by...
Authors
John Power, Matthew M. Haney, Steven M Botnick, James P. Dixon, David Fee, Max Kaufman, Dane M. Ketner, John J. Lyons, Thomas Parker, John F. Paskievitch, Cyrus Read, Cheryl Searcy, Scott D. Stihler, Gabrielle Tepp, Aaron Wech
Catalog of earthquake parameters and description of seismograph and infrasound stations at Alaskan volcanoes—January 1, 2013, through December 31, 2017 Catalog of earthquake parameters and description of seismograph and infrasound stations at Alaskan volcanoes—January 1, 2013, through December 31, 2017
Between January 1, 2013, and December 31, 2017, the Alaska Volcano Observatory (AVO) located a total of 28,172 earthquakes at volcanoes in Alaska. The annual totals are 3,840, 5,819, 5,297, 6,151, and 7,065 earthquakes for the years 2013 through 2017, respectively. This represents an average of 5,634 earthquakes per year, which is comparable to the yearly number of earthquakes AVO...
Authors
James P. Dixon, Scott D. Stihler, Matthew M. Haney, John J. Lyons, Dane M. Ketner, Katherine M. Mulliken, Thomas Parker, John Power
A unified catalog of earthquake hypocenters and magnitudes at volcanoes in Alaska—1989 to 2018 A unified catalog of earthquake hypocenters and magnitudes at volcanoes in Alaska—1989 to 2018
The Alaska Volcano Observatory (AVO) has maintained an earthquake catalog since 1989 that now contains over 120,000 hypocenters and magnitudes that occurred near Alaskan volcanoes. Since 1989 the seismic instrumentation and data acquisition and processing techniques have undergone numerous changes as computer systems and seismic processing software have advanced and evolved. In this...
Authors
John Power, Paul A. Friberg, Matthew M. Haney, Thomas Parker, Scott D. Stihler, James P. Dixon
Science and Products
Filter Total Items: 88
Capturing, preserving and digitizing legacy seismic data from the Montserrat Volcano Observatory analog seismic network, July 1995 – December 2004 Capturing, preserving and digitizing legacy seismic data from the Montserrat Volcano Observatory analog seismic network, July 1995 – December 2004
An eruption of the Soufrière Hills Volcano (SHV) on the eastern Caribbean island of Montserrat began on 18 July 1995 and continued until February 2010. Within nine days of the eruption onset, an existing four‐station analog seismic network (ASN) was expanded to 10 sites. Telemetered data from this network were recorded, processed, and archived locally using a system developed by...
Authors
Glenn Thompson, John Power, Jochen Braunmiller, Andrew Lockhart, Lloyd Lynch, Wendy McCausland, Charlotte Rowe, Thomas Shea, Randall A. White, Charles Breithaupt
Linking subsurface to surface using gas emission and melt inclusion data at Mount Cleveland volcano, Alaska Linking subsurface to surface using gas emission and melt inclusion data at Mount Cleveland volcano, Alaska
Mount Cleveland is one of Alaska's most active volcanoes, yet little is known about the magmatic system driving persistent and dynamic volcanic activity. Volcanic gas and melt inclusion (MI) data from 2016 were combined to investigate shallow magmatic processes. SO2 emission rates were between 166 and 324 t/day and the H2O/SO2 was 600 ± 53, whereas CO2 and H2S were below detection...
Authors
Cynthia Werner, Daniel J. Rasmussen, Terry Plank, Peter J. Kelly, Christoph Kern, Taryn Lopez, Jonas Gliss, John Power, Diana Roman, Pavel Izbekov, John J. Lyons
Seismic character and progression of explosive activity during the 2016-2017 eruption of Bogoslof volcano, Alaska Seismic character and progression of explosive activity during the 2016-2017 eruption of Bogoslof volcano, Alaska
Bogoslof volcano, in the central Aleutian arc, experienced a major eruption between December 2016 and August 2017 that was characterized by explosive activity (VEI 2 to 3) and the extrusion of lava domes. The Alaska Volcano Observatory tracked the activity in real-time using seismicity observed on distant stations as well as infrasound, lightning, satellite data, and occasional visual
Authors
Cheryl Searcy, John Power
Goals and development of the Alaska Volcano Observatory Seismic Network and application to forecasting and detecting volcanic eruptions Goals and development of the Alaska Volcano Observatory Seismic Network and application to forecasting and detecting volcanic eruptions
The Alaska Volcano Observatory (AVO) seismic network has been in operation since 1988 and during this time has grown from 29 to 217 seismic stations providing real-time monitoring of 32 active volcanoes in Alaska, as well as useful data for regional earthquake monitoring. Since 1988, AVO has detected 59 volcanic eruptions at Aleutian arc volcanoes, and 31 of these have been captured by...
Authors
John Power, Matthew M. Haney, Steven M Botnick, James P. Dixon, David Fee, Max Kaufman, Dane M. Ketner, John J. Lyons, Thomas Parker, John F. Paskievitch, Cyrus Read, Cheryl Searcy, Scott D. Stihler, Gabrielle Tepp, Aaron Wech
Catalog of earthquake parameters and description of seismograph and infrasound stations at Alaskan volcanoes—January 1, 2013, through December 31, 2017 Catalog of earthquake parameters and description of seismograph and infrasound stations at Alaskan volcanoes—January 1, 2013, through December 31, 2017
Between January 1, 2013, and December 31, 2017, the Alaska Volcano Observatory (AVO) located a total of 28,172 earthquakes at volcanoes in Alaska. The annual totals are 3,840, 5,819, 5,297, 6,151, and 7,065 earthquakes for the years 2013 through 2017, respectively. This represents an average of 5,634 earthquakes per year, which is comparable to the yearly number of earthquakes AVO...
Authors
James P. Dixon, Scott D. Stihler, Matthew M. Haney, John J. Lyons, Dane M. Ketner, Katherine M. Mulliken, Thomas Parker, John Power
A unified catalog of earthquake hypocenters and magnitudes at volcanoes in Alaska—1989 to 2018 A unified catalog of earthquake hypocenters and magnitudes at volcanoes in Alaska—1989 to 2018
The Alaska Volcano Observatory (AVO) has maintained an earthquake catalog since 1989 that now contains over 120,000 hypocenters and magnitudes that occurred near Alaskan volcanoes. Since 1989 the seismic instrumentation and data acquisition and processing techniques have undergone numerous changes as computer systems and seismic processing software have advanced and evolved. In this...
Authors
John Power, Paul A. Friberg, Matthew M. Haney, Thomas Parker, Scott D. Stihler, James P. Dixon
*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