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Serves as an Associate Coordinator of the USGS Volcano Hazards Program, ensuring scientific direction and budget are aligned with Federal priorities while supporting guidance on program development and disaster response. Also specializes in volcano geodesy with an emphasis on geodetic methods and data collection for monitoring surface deformation changes caused by magma movement.
HVO scientists have been closely monitoring the earthquakes in Kīlauea's summit region over the past weeks. Most earthquakes have occurred at depths of 1–2 miles (2–3 kilometers) below the surface, with no upward migration detected.
HVO scientists have been closely monitoring the earthquakes in Kīlauea's summit region over the past weeks. Most earthquakes have occurred at depths of 1–2 miles (2–3 kilometers) below the surface, with no upward migration detected.
Scientists temporarily deployed a handful of temporary GPS instruments at established benchmarks in Kīlauea south caldera region to better measure ground deformation during the ongoing unrest there. Steady rates of earthquakes have persisted in this area since August 22.
Scientists temporarily deployed a handful of temporary GPS instruments at established benchmarks in Kīlauea south caldera region to better measure ground deformation during the ongoing unrest there. Steady rates of earthquakes have persisted in this area since August 22.
This photo shows one of several temporary GPS survey stations recently deployed in Kīlauea south caldera region. The instruments will record additional measurements during the ongoing heightened unrest. Patterns of earthquakes and ground deformation indicate that Kīlauea's summit is becoming increasingly pressurized.
This photo shows one of several temporary GPS survey stations recently deployed in Kīlauea south caldera region. The instruments will record additional measurements during the ongoing heightened unrest. Patterns of earthquakes and ground deformation indicate that Kīlauea's summit is becoming increasingly pressurized.
Temporary GPS survey equipment has been deployed in Kīlauea south caldera area for additional measurements during the ongoing heightened unrest there.
Temporary GPS survey equipment has been deployed in Kīlauea south caldera area for additional measurements during the ongoing heightened unrest there.
Another GPS survey benchmark being occupied on Mauna Loa. The metal disk on the ground beneath the tripod is the benchmark, which is cemented to the lava flow surface.
Another GPS survey benchmark being occupied on Mauna Loa. The metal disk on the ground beneath the tripod is the benchmark, which is cemented to the lava flow surface.
Hawaiian Volcano Observatory geophysicists are performing the annual GPS survey of Mauna Loa. Most Mauna Loa GPS campaign survey sites have been occupied every year since 1996, whereas less active volcanoes Hualālai and Haleakalā are surveyed every 3–5 years. USGS image by A. Ellis.
Hawaiian Volcano Observatory geophysicists are performing the annual GPS survey of Mauna Loa. Most Mauna Loa GPS campaign survey sites have been occupied every year since 1996, whereas less active volcanoes Hualālai and Haleakalā are surveyed every 3–5 years. USGS image by A. Ellis.
During the annual Mauna Loa GPS campaign, scientists temporarily deploy a number of GPS instruments at established benchmarks; their recorded positions can be compared with those from previous years to discern subtle patterns of ground deformation associated with volcanic activity.
During the annual Mauna Loa GPS campaign, scientists temporarily deploy a number of GPS instruments at established benchmarks; their recorded positions can be compared with those from previous years to discern subtle patterns of ground deformation associated with volcanic activity.
A USGS scientist checks the power supply at a Global Positioning System (GPS) station on Ta‘ū Island in American Samoa. The station consists of a GPS unit, which can measure changes in ground motion, placed on a tripod that is leveled and centered over a benchmark.
A USGS scientist checks the power supply at a Global Positioning System (GPS) station on Ta‘ū Island in American Samoa. The station consists of a GPS unit, which can measure changes in ground motion, placed on a tripod that is leveled and centered over a benchmark.
Photograph of a Global Positioning System (GPS) station on Ta‘ū Island in American Samoa. Solar panels and batteries in a weather-proof enclosure power the station, which consists of a GPS unit placed on a tripod that is leveled and centered over a benchmark.
Photograph of a Global Positioning System (GPS) station on Ta‘ū Island in American Samoa. Solar panels and batteries in a weather-proof enclosure power the station, which consists of a GPS unit placed on a tripod that is leveled and centered over a benchmark.
In recent weeks, HVO geophysicists have been undertaking a Global Positioning System (GPS) campaign across Kīlauea.
In recent weeks, HVO geophysicists have been undertaking a Global Positioning System (GPS) campaign across Kīlauea.
Over the past few months, HVO geophysicists have been conducting the annual high-precision Global Positioning System (GPS) survey of Kīlauea. The annual survey supplements HVO's continuous GPS monitoring stations and provides information on vertical and horizontal deformation of the ground surface.
Over the past few months, HVO geophysicists have been conducting the annual high-precision Global Positioning System (GPS) survey of Kīlauea. The annual survey supplements HVO's continuous GPS monitoring stations and provides information on vertical and horizontal deformation of the ground surface.
HVO scientists have been closely monitoring the earthquakes in Kīlauea's summit region over the past weeks. Most earthquakes have occurred at depths of 1–2 miles (2–3 kilometers) below the surface, with no upward migration detected.
HVO scientists have been closely monitoring the earthquakes in Kīlauea's summit region over the past weeks. Most earthquakes have occurred at depths of 1–2 miles (2–3 kilometers) below the surface, with no upward migration detected.
Scientists temporarily deployed a handful of temporary GPS instruments at established benchmarks in Kīlauea south caldera region to better measure ground deformation during the ongoing unrest there. Steady rates of earthquakes have persisted in this area since August 22.
Scientists temporarily deployed a handful of temporary GPS instruments at established benchmarks in Kīlauea south caldera region to better measure ground deformation during the ongoing unrest there. Steady rates of earthquakes have persisted in this area since August 22.
This photo shows one of several temporary GPS survey stations recently deployed in Kīlauea south caldera region. The instruments will record additional measurements during the ongoing heightened unrest. Patterns of earthquakes and ground deformation indicate that Kīlauea's summit is becoming increasingly pressurized.
This photo shows one of several temporary GPS survey stations recently deployed in Kīlauea south caldera region. The instruments will record additional measurements during the ongoing heightened unrest. Patterns of earthquakes and ground deformation indicate that Kīlauea's summit is becoming increasingly pressurized.
Temporary GPS survey equipment has been deployed in Kīlauea south caldera area for additional measurements during the ongoing heightened unrest there.
Temporary GPS survey equipment has been deployed in Kīlauea south caldera area for additional measurements during the ongoing heightened unrest there.
Another GPS survey benchmark being occupied on Mauna Loa. The metal disk on the ground beneath the tripod is the benchmark, which is cemented to the lava flow surface.
Another GPS survey benchmark being occupied on Mauna Loa. The metal disk on the ground beneath the tripod is the benchmark, which is cemented to the lava flow surface.
Hawaiian Volcano Observatory geophysicists are performing the annual GPS survey of Mauna Loa. Most Mauna Loa GPS campaign survey sites have been occupied every year since 1996, whereas less active volcanoes Hualālai and Haleakalā are surveyed every 3–5 years. USGS image by A. Ellis.
Hawaiian Volcano Observatory geophysicists are performing the annual GPS survey of Mauna Loa. Most Mauna Loa GPS campaign survey sites have been occupied every year since 1996, whereas less active volcanoes Hualālai and Haleakalā are surveyed every 3–5 years. USGS image by A. Ellis.
During the annual Mauna Loa GPS campaign, scientists temporarily deploy a number of GPS instruments at established benchmarks; their recorded positions can be compared with those from previous years to discern subtle patterns of ground deformation associated with volcanic activity.
During the annual Mauna Loa GPS campaign, scientists temporarily deploy a number of GPS instruments at established benchmarks; their recorded positions can be compared with those from previous years to discern subtle patterns of ground deformation associated with volcanic activity.
A USGS scientist checks the power supply at a Global Positioning System (GPS) station on Ta‘ū Island in American Samoa. The station consists of a GPS unit, which can measure changes in ground motion, placed on a tripod that is leveled and centered over a benchmark.
A USGS scientist checks the power supply at a Global Positioning System (GPS) station on Ta‘ū Island in American Samoa. The station consists of a GPS unit, which can measure changes in ground motion, placed on a tripod that is leveled and centered over a benchmark.
Photograph of a Global Positioning System (GPS) station on Ta‘ū Island in American Samoa. Solar panels and batteries in a weather-proof enclosure power the station, which consists of a GPS unit placed on a tripod that is leveled and centered over a benchmark.
Photograph of a Global Positioning System (GPS) station on Ta‘ū Island in American Samoa. Solar panels and batteries in a weather-proof enclosure power the station, which consists of a GPS unit placed on a tripod that is leveled and centered over a benchmark.
In recent weeks, HVO geophysicists have been undertaking a Global Positioning System (GPS) campaign across Kīlauea.
In recent weeks, HVO geophysicists have been undertaking a Global Positioning System (GPS) campaign across Kīlauea.
Over the past few months, HVO geophysicists have been conducting the annual high-precision Global Positioning System (GPS) survey of Kīlauea. The annual survey supplements HVO's continuous GPS monitoring stations and provides information on vertical and horizontal deformation of the ground surface.
Over the past few months, HVO geophysicists have been conducting the annual high-precision Global Positioning System (GPS) survey of Kīlauea. The annual survey supplements HVO's continuous GPS monitoring stations and provides information on vertical and horizontal deformation of the ground surface.