Volcanic, coseismic, and seasonal changes detected at White Island (Whakaari) Volcano, New Zealand, using seismic ambient noise
Ambient noise interferometry is becoming increasingly popular for studying seismic velocity changes. Such changes contain information on the structural and mechanical properties of Earth systems. Application to monitoring, however, is complicated by the large number of processes capable of inducing...
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ftunivgent:oai:archive.ugent.be:8669076 2023-06-11T04:17:30+02:00 Volcanic, coseismic, and seasonal changes detected at White Island (Whakaari) Volcano, New Zealand, using seismic ambient noise Yates, A. S. Savage, M. K. Jolly, A. D. Caudron, Corentin Hamling, I. J. 2019 application/pdf https://biblio.ugent.be/publication/8669076 http://hdl.handle.net/1854/LU-8669076 https://doi.org/10.1029/2018GL080580 https://biblio.ugent.be/publication/8669076/file/8669079 eng eng https://biblio.ugent.be/publication/8669076 http://hdl.handle.net/1854/LU-8669076 http://dx.doi.org/10.1029/2018GL080580 https://biblio.ugent.be/publication/8669076/file/8669079 No license (in copyright) info:eu-repo/semantics/openAccess GEOPHYSICAL RESEARCH LETTERS ISSN: 0094-8276 ISSN: 1944-8007 Earth and Environmental Sciences VELOCITY CHANGES ERUPTIONS STRESS FAULT EARTHQUAKES ANISOTROPY RESOLUTION PARKFIELD ACCURACY TREMOR ambient noise volcanoes seismic interferometry journalArticle info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2019 ftunivgent https://doi.org/10.1029/2018GL080580 2023-05-10T22:48:31Z Ambient noise interferometry is becoming increasingly popular for studying seismic velocity changes. Such changes contain information on the structural and mechanical properties of Earth systems. Application to monitoring, however, is complicated by the large number of processes capable of inducing crustal velocity changes. We demonstrate this at White Island volcano over a 10-year period containing multiple well-documented eruptions. Using individual seismic stations, we detect velocity perturbations that we ascribe to volcanic activity, large earthquakes, and seasonality. Distant seismic stations capture widespread nonvolcanic changes that are also present at the volcano. Comparison between velocity changes recorded by distant and local stations then allows us to distinguish volcanic phenomena from seasonality. Through this, we resolve distinct features in ambient noise-derived velocity changes that relate to volcanic unrest and a phreatic eruption, illustrating the strength of the approach. Plain Language Summary Detecting small changes in physical properties at volcanoes is important toward effectively forecasting volcanic eruptions. One approach is to monitor the speed of seismic waves at the Earth's surface, which are sensitive to changes in the rock they pass through. At volcanoes, such changes may manifest through subsurface pressure increases preceding eruptions. Correctly interpreting these changes, however, is complicated. Many other, nonvolcanic, processes are also capable of producing similar wave speed perturbations. At White Island volcano, New Zealand, we detect changes associated with volcanic activity, large earthquakes, and weather-related processes using seismometers located on the volcano. We demonstrate that volcanic and nonvolcanic features can be distinguished by comparing changes recorded at the volcano with those recorded at large distances, where volcanic changes are not expected to be observed. Through this, we resolve distinct differences that can be related to volcanic activity, ... Article in Journal/Newspaper White Island Ghent University Academic Bibliography New Zealand White Island ENVELOPE(48.583,48.583,-66.733,-66.733) Geophysical Research Letters 46 1 99 108 |
institution |
Open Polar |
collection |
Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Earth and Environmental Sciences VELOCITY CHANGES ERUPTIONS STRESS FAULT EARTHQUAKES ANISOTROPY RESOLUTION PARKFIELD ACCURACY TREMOR ambient noise volcanoes seismic interferometry |
spellingShingle |
Earth and Environmental Sciences VELOCITY CHANGES ERUPTIONS STRESS FAULT EARTHQUAKES ANISOTROPY RESOLUTION PARKFIELD ACCURACY TREMOR ambient noise volcanoes seismic interferometry Yates, A. S. Savage, M. K. Jolly, A. D. Caudron, Corentin Hamling, I. J. Volcanic, coseismic, and seasonal changes detected at White Island (Whakaari) Volcano, New Zealand, using seismic ambient noise |
topic_facet |
Earth and Environmental Sciences VELOCITY CHANGES ERUPTIONS STRESS FAULT EARTHQUAKES ANISOTROPY RESOLUTION PARKFIELD ACCURACY TREMOR ambient noise volcanoes seismic interferometry |
description |
Ambient noise interferometry is becoming increasingly popular for studying seismic velocity changes. Such changes contain information on the structural and mechanical properties of Earth systems. Application to monitoring, however, is complicated by the large number of processes capable of inducing crustal velocity changes. We demonstrate this at White Island volcano over a 10-year period containing multiple well-documented eruptions. Using individual seismic stations, we detect velocity perturbations that we ascribe to volcanic activity, large earthquakes, and seasonality. Distant seismic stations capture widespread nonvolcanic changes that are also present at the volcano. Comparison between velocity changes recorded by distant and local stations then allows us to distinguish volcanic phenomena from seasonality. Through this, we resolve distinct features in ambient noise-derived velocity changes that relate to volcanic unrest and a phreatic eruption, illustrating the strength of the approach. Plain Language Summary Detecting small changes in physical properties at volcanoes is important toward effectively forecasting volcanic eruptions. One approach is to monitor the speed of seismic waves at the Earth's surface, which are sensitive to changes in the rock they pass through. At volcanoes, such changes may manifest through subsurface pressure increases preceding eruptions. Correctly interpreting these changes, however, is complicated. Many other, nonvolcanic, processes are also capable of producing similar wave speed perturbations. At White Island volcano, New Zealand, we detect changes associated with volcanic activity, large earthquakes, and weather-related processes using seismometers located on the volcano. We demonstrate that volcanic and nonvolcanic features can be distinguished by comparing changes recorded at the volcano with those recorded at large distances, where volcanic changes are not expected to be observed. Through this, we resolve distinct differences that can be related to volcanic activity, ... |
format |
Article in Journal/Newspaper |
author |
Yates, A. S. Savage, M. K. Jolly, A. D. Caudron, Corentin Hamling, I. J. |
author_facet |
Yates, A. S. Savage, M. K. Jolly, A. D. Caudron, Corentin Hamling, I. J. |
author_sort |
Yates, A. S. |
title |
Volcanic, coseismic, and seasonal changes detected at White Island (Whakaari) Volcano, New Zealand, using seismic ambient noise |
title_short |
Volcanic, coseismic, and seasonal changes detected at White Island (Whakaari) Volcano, New Zealand, using seismic ambient noise |
title_full |
Volcanic, coseismic, and seasonal changes detected at White Island (Whakaari) Volcano, New Zealand, using seismic ambient noise |
title_fullStr |
Volcanic, coseismic, and seasonal changes detected at White Island (Whakaari) Volcano, New Zealand, using seismic ambient noise |
title_full_unstemmed |
Volcanic, coseismic, and seasonal changes detected at White Island (Whakaari) Volcano, New Zealand, using seismic ambient noise |
title_sort |
volcanic, coseismic, and seasonal changes detected at white island (whakaari) volcano, new zealand, using seismic ambient noise |
publishDate |
2019 |
url |
https://biblio.ugent.be/publication/8669076 http://hdl.handle.net/1854/LU-8669076 https://doi.org/10.1029/2018GL080580 https://biblio.ugent.be/publication/8669076/file/8669079 |
long_lat |
ENVELOPE(48.583,48.583,-66.733,-66.733) |
geographic |
New Zealand White Island |
geographic_facet |
New Zealand White Island |
genre |
White Island |
genre_facet |
White Island |
op_source |
GEOPHYSICAL RESEARCH LETTERS ISSN: 0094-8276 ISSN: 1944-8007 |
op_relation |
https://biblio.ugent.be/publication/8669076 http://hdl.handle.net/1854/LU-8669076 http://dx.doi.org/10.1029/2018GL080580 https://biblio.ugent.be/publication/8669076/file/8669079 |
op_rights |
No license (in copyright) info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2018GL080580 |
container_title |
Geophysical Research Letters |
container_volume |
46 |
container_issue |
1 |
container_start_page |
99 |
op_container_end_page |
108 |
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1768376760291819520 |