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
Filter Total Items: 20
Campaign GPS measurements on the Island of Hawai`i collected by the Hawaiian Volcano Observatory in 2020 Campaign GPS measurements on the Island of Hawai`i collected by the Hawaiian Volcano Observatory in 2020
This dataset includes raw and rinex data from 2020 campaign gps data from the Island of Hawai`i in 2020. There was a total of 57 sites occupied. All data are included along with metadata, log sheets and raw/rinex data.
Campaign GPS measurements on the Island of Hawai'i collected by the Hawaiian Volcano Observatory in 2019 Campaign GPS measurements on the Island of Hawai'i collected by the Hawaiian Volcano Observatory in 2019
This dataset includes raw and rinex data from 2019 campaign gps data from the Island of Hawai'i in 2019. There were a total of 69 sites occupied. All data is included along with metadata, log sheets and raw/rinex data.
Filter Total Items: 28
Six-axis ground motion measurements of caldera collapse at Kīlauea Volcano, Hawaiʻi - More data, more puzzles? Six-axis ground motion measurements of caldera collapse at Kīlauea Volcano, Hawaiʻi - More data, more puzzles?
Near‐field recordings of large earthquakes and volcano‐induced events using traditional seismological instrumentation often suffer from unaccounted effects of local tilt and saturation of signals. Recent hardware advances have led to the development of the blueSeis‐3A, a very broadband, highly sensitive rotational motion sensor. We installed this sensor in close proximity to permanently...
Authors
Joachim Wassermann, Felix Bernauer, Brian Shiro, Ingrid A. Johanson, Frederic Guattari, Heiner Igel
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
Science and Products
Filter Total Items: 20
Campaign GPS measurements on the Island of Hawai`i collected by the Hawaiian Volcano Observatory in 2020 Campaign GPS measurements on the Island of Hawai`i collected by the Hawaiian Volcano Observatory in 2020
This dataset includes raw and rinex data from 2020 campaign gps data from the Island of Hawai`i in 2020. There was a total of 57 sites occupied. All data are included along with metadata, log sheets and raw/rinex data.
Campaign GPS measurements on the Island of Hawai'i collected by the Hawaiian Volcano Observatory in 2019 Campaign GPS measurements on the Island of Hawai'i collected by the Hawaiian Volcano Observatory in 2019
This dataset includes raw and rinex data from 2019 campaign gps data from the Island of Hawai'i in 2019. There were a total of 69 sites occupied. All data is included along with metadata, log sheets and raw/rinex data.
Filter Total Items: 28
Six-axis ground motion measurements of caldera collapse at Kīlauea Volcano, Hawaiʻi - More data, more puzzles? Six-axis ground motion measurements of caldera collapse at Kīlauea Volcano, Hawaiʻi - More data, more puzzles?
Near‐field recordings of large earthquakes and volcano‐induced events using traditional seismological instrumentation often suffer from unaccounted effects of local tilt and saturation of signals. Recent hardware advances have led to the development of the blueSeis‐3A, a very broadband, highly sensitive rotational motion sensor. We installed this sensor in close proximity to permanently...
Authors
Joachim Wassermann, Felix Bernauer, Brian Shiro, Ingrid A. Johanson, Frederic Guattari, Heiner Igel
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