Ingrid A. Johanson
Ingrid is a research geophysicist at the Hawaiian Volcano Observatory. She is an expert in using GPS, as well as satellite radar data (InSAR), to measure motion of the ground surface in response to geologic events such as earthquakes and magma movement.
Science and Products
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Post-collapse gravity increase at the summit of Kīlauea Volcano, Hawaiʻi Post-collapse gravity increase at the summit of Kīlauea Volcano, Hawaiʻi
We conducted gravity surveys of the summit area of Kīlauea Volcano, Hawaiʻi, in November 2018 and March 2019, with the goal of determining whether there was any mass change at depth following the volcano's May–August 2018 caldera collapse. Surface deformation between the two surveys was minimal, but we measured a gravity increase (maximum 44 μGal) centered on the caldera that can be...
Authors
Michael P. Poland, Elske de Zeeuw-van Dalfsen, Marco Bagnardi, Ingrid A. Johanson
Magma reservoir failure and the onset of caldera collapse at Kīlauea volcano in 2018 Magma reservoir failure and the onset of caldera collapse at Kīlauea volcano in 2018
Caldera-forming eruptions are among Earths most hazardous natural phenomena, yet the architecture of subcaldera magma reservoirs and the conditions that trigger collapse are poorly understood. Observations from the formation of a 0.8cubic kilometer basaltic caldera at Klauea Volcano in 2018 included the draining of an active lava lake, which provided a window into pressure decrease in...
Authors
Kyle R. Anderson, Ingrid A. Johanson, Matthew R. Patrick, Mengyang Gu, Paul Segall, Michael P. Poland, Emily Montgomery-Brown, Asta Miklius
Mechanics of inflationary deformation during Caldera collapse: Evidence from the 2018 Kīlauea Eruption Mechanics of inflationary deformation during Caldera collapse: Evidence from the 2018 Kīlauea Eruption
During the 2018 Kilauea eruption the caldera ffloor dropped 500 meters in 62 nearly periodic events of up to 8 meters. Caldera collapse maintains pressure in the magma reservoir necessary to sustain high-rate eruptions. The 2018 collapses were accompanied by inflationary tilts and displacements, similar to observations at other basaltic calderas. Collapse is modeled in 2D by uniform slip
Authors
Paul Segall, Kyle R. Anderson, Ingrid A. Johanson, Asta Miklius
Regional Global Navigation Satellite System networks for crustal deformation monitoring Regional Global Navigation Satellite System networks for crustal deformation monitoring
Regional networks of Global Navigation Satellite System (GNSS) stations cover seismically and volcanically active areas throughout the United States. Data from these networks have been used to produce high‐precision, three‐component velocity fields covering broad geographic regions as well as position time series that track time‐varying crustal deformation. This information has...
Authors
Jessica R. Murray, Noel Bartlow, Yehuda Bock, Benjamin A. Brooks, James H. Foster, Jeffery T. Freymueller, William C. Hammond, Kathleen Hodgkinson, Ingrid A. Johanson, Alberto Lopez-Venegas, Doerte Mann, Glen Mattioli, Timothy Melbourne, David Mencin, Emily K. Montgomery-Brown, Mark Hunter Murray, Robert Smalley, Valerie Thomas
Interseismic quiescence and triggered slip of active normal faults of Kīlauea Volcano’s south flank during 2001-2018 Interseismic quiescence and triggered slip of active normal faults of Kīlauea Volcano’s south flank during 2001-2018
The mobile south flank of Kīlauea Volcano hosts two normal fault systems, the Koa'e fault system (KFS) and the Hilina fault system (HFS). In historical time, at least three M>6.5 earthquakes have occurred on the basal detachment of the Kīlauea Volcano's south flank, with the most recent being the 4 May 2018 M6.9 earthquake. Here we analyze kinematic Global Positioning System data...
Authors
Kang Wang, Hayden MacArthur, Ingrid A. Johanson, Emily K. Montgomery-Brown, Michael P. Poland, Eric Cannon, Matthew d’Alessio, Roland Bürgmann
The 2018 rift eruption and summit collapse of Kilauea Volcano The 2018 rift eruption and summit collapse of Kilauea Volcano
In 2018, Kīlauea Volcano experienced its largest lower East Rift Zone (LERZ) eruption and caldera collapse in at least 200 years. After collapse of the Pu'u 'Ō'ō vent on 30 April, magma propagated downrift. Eruptive fissures opened in the LERZ on 3 May, eventually extending ~6.8 km. A 4 May earthquake (M6.9) produced ~5 m of fault slip. Lava erupted at rates exceeding 100 m3/s...
Authors
Christina A. Neal, Steven Brantley, Loren Antolik, Janet Babb, Matthew K. Burgess, Michael Cappos, Jefferson Chang, Sarah Conway, Liliana G. Desmither, Peter Dotray, Tamar Elias, Pauline Fukunaga, Steven Fuke, Ingrid A. Johanson, Kevan Kamibayashi, James P. Kauahikaua, R. Lopaka Lee, S. Pekalib, Asta Miklius, Brian Shiro, Don Swanson, Patricia A. Nadeau, Michael H. Zoeller, P. Okubo, Carolyn Parcheta, Matthew R. Patrick, William Tollett, Frank A. Trusdell, Edward F. Younger, Emily K. Montgomery-Brown, Kyle R. Anderson, Michael P. Poland, Jessica L. Ball, Joseph A. Bard, Michelle L. Coombs, Hannah R. Dietterich, Christoph Kern, Weston Thelen, Peter Cervelli, Tim R. Orr, Bruce F. Houghton, Cheryl Gansecki, Richard Hazlett, Paul Lundgren, Angela K. Diefenbach, Allan Lerner, Greg Waite, Peter J. Kelly, Laura E. Clor, Cynthia Werner, Katherine Mulliken, Gary B. Fisher, David Damby
Science and Products
Filter Total Items: 17
No Result Found
Filter Total Items: 27
Post-collapse gravity increase at the summit of Kīlauea Volcano, Hawaiʻi Post-collapse gravity increase at the summit of Kīlauea Volcano, Hawaiʻi
We conducted gravity surveys of the summit area of Kīlauea Volcano, Hawaiʻi, in November 2018 and March 2019, with the goal of determining whether there was any mass change at depth following the volcano's May–August 2018 caldera collapse. Surface deformation between the two surveys was minimal, but we measured a gravity increase (maximum 44 μGal) centered on the caldera that can be...
Authors
Michael P. Poland, Elske de Zeeuw-van Dalfsen, Marco Bagnardi, Ingrid A. Johanson
Magma reservoir failure and the onset of caldera collapse at Kīlauea volcano in 2018 Magma reservoir failure and the onset of caldera collapse at Kīlauea volcano in 2018
Caldera-forming eruptions are among Earths most hazardous natural phenomena, yet the architecture of subcaldera magma reservoirs and the conditions that trigger collapse are poorly understood. Observations from the formation of a 0.8cubic kilometer basaltic caldera at Klauea Volcano in 2018 included the draining of an active lava lake, which provided a window into pressure decrease in...
Authors
Kyle R. Anderson, Ingrid A. Johanson, Matthew R. Patrick, Mengyang Gu, Paul Segall, Michael P. Poland, Emily Montgomery-Brown, Asta Miklius
Mechanics of inflationary deformation during Caldera collapse: Evidence from the 2018 Kīlauea Eruption Mechanics of inflationary deformation during Caldera collapse: Evidence from the 2018 Kīlauea Eruption
During the 2018 Kilauea eruption the caldera ffloor dropped 500 meters in 62 nearly periodic events of up to 8 meters. Caldera collapse maintains pressure in the magma reservoir necessary to sustain high-rate eruptions. The 2018 collapses were accompanied by inflationary tilts and displacements, similar to observations at other basaltic calderas. Collapse is modeled in 2D by uniform slip
Authors
Paul Segall, Kyle R. Anderson, Ingrid A. Johanson, Asta Miklius
Regional Global Navigation Satellite System networks for crustal deformation monitoring Regional Global Navigation Satellite System networks for crustal deformation monitoring
Regional networks of Global Navigation Satellite System (GNSS) stations cover seismically and volcanically active areas throughout the United States. Data from these networks have been used to produce high‐precision, three‐component velocity fields covering broad geographic regions as well as position time series that track time‐varying crustal deformation. This information has...
Authors
Jessica R. Murray, Noel Bartlow, Yehuda Bock, Benjamin A. Brooks, James H. Foster, Jeffery T. Freymueller, William C. Hammond, Kathleen Hodgkinson, Ingrid A. Johanson, Alberto Lopez-Venegas, Doerte Mann, Glen Mattioli, Timothy Melbourne, David Mencin, Emily K. Montgomery-Brown, Mark Hunter Murray, Robert Smalley, Valerie Thomas
Interseismic quiescence and triggered slip of active normal faults of Kīlauea Volcano’s south flank during 2001-2018 Interseismic quiescence and triggered slip of active normal faults of Kīlauea Volcano’s south flank during 2001-2018
The mobile south flank of Kīlauea Volcano hosts two normal fault systems, the Koa'e fault system (KFS) and the Hilina fault system (HFS). In historical time, at least three M>6.5 earthquakes have occurred on the basal detachment of the Kīlauea Volcano's south flank, with the most recent being the 4 May 2018 M6.9 earthquake. Here we analyze kinematic Global Positioning System data...
Authors
Kang Wang, Hayden MacArthur, Ingrid A. Johanson, Emily K. Montgomery-Brown, Michael P. Poland, Eric Cannon, Matthew d’Alessio, Roland Bürgmann
The 2018 rift eruption and summit collapse of Kilauea Volcano The 2018 rift eruption and summit collapse of Kilauea Volcano
In 2018, Kīlauea Volcano experienced its largest lower East Rift Zone (LERZ) eruption and caldera collapse in at least 200 years. After collapse of the Pu'u 'Ō'ō vent on 30 April, magma propagated downrift. Eruptive fissures opened in the LERZ on 3 May, eventually extending ~6.8 km. A 4 May earthquake (M6.9) produced ~5 m of fault slip. Lava erupted at rates exceeding 100 m3/s...
Authors
Christina A. Neal, Steven Brantley, Loren Antolik, Janet Babb, Matthew K. Burgess, Michael Cappos, Jefferson Chang, Sarah Conway, Liliana G. Desmither, Peter Dotray, Tamar Elias, Pauline Fukunaga, Steven Fuke, Ingrid A. Johanson, Kevan Kamibayashi, James P. Kauahikaua, R. Lopaka Lee, S. Pekalib, Asta Miklius, Brian Shiro, Don Swanson, Patricia A. Nadeau, Michael H. Zoeller, P. Okubo, Carolyn Parcheta, Matthew R. Patrick, William Tollett, Frank A. Trusdell, Edward F. Younger, Emily K. Montgomery-Brown, Kyle R. Anderson, Michael P. Poland, Jessica L. Ball, Joseph A. Bard, Michelle L. Coombs, Hannah R. Dietterich, Christoph Kern, Weston Thelen, Peter Cervelli, Tim R. Orr, Bruce F. Houghton, Cheryl Gansecki, Richard Hazlett, Paul Lundgren, Angela K. Diefenbach, Allan Lerner, Greg Waite, Peter J. Kelly, Laura E. Clor, Cynthia Werner, Katherine Mulliken, Gary B. Fisher, David Damby