Anatomy of phreatic eruptions
Abstract This study investigates phreatic eruptions at two similar volcanoes, Kawah Ijen (Indonesia) and White Island (New Zealand). By carefully processing broadband seismic signals, we reveal seismic signatures and characteristics of these eruptions. At both volcanoes, the phreatic eruptions are i...
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ftdoajarticles:oai:doaj.org/article:22d5725fd82d4bec93c85f3bd2e71ff1 2023-05-15T18:43:35+02:00 Anatomy of phreatic eruptions Corentin Caudron Benoit Taisne Jurgen Neuberg Arthur D. Jolly Bruce Christenson Thomas Lecocq Suparjan Devy Syahbana Gede Suantika 2018-10-01T00:00:00Z https://doi.org/10.1186/s40623-018-0938-x https://doaj.org/article/22d5725fd82d4bec93c85f3bd2e71ff1 EN eng SpringerOpen http://link.springer.com/article/10.1186/s40623-018-0938-x https://doaj.org/toc/1880-5981 doi:10.1186/s40623-018-0938-x 1880-5981 https://doaj.org/article/22d5725fd82d4bec93c85f3bd2e71ff1 Earth, Planets and Space, Vol 70, Iss 1, Pp 1-14 (2018) Volcanic monitoring Phreatic eruption Volcanic lake Broadband seismology Geography. Anthropology. Recreation G Geodesy QB275-343 Geology QE1-996.5 article 2018 ftdoajarticles https://doi.org/10.1186/s40623-018-0938-x 2022-12-31T00:18:39Z Abstract This study investigates phreatic eruptions at two similar volcanoes, Kawah Ijen (Indonesia) and White Island (New Zealand). By carefully processing broadband seismic signals, we reveal seismic signatures and characteristics of these eruptions. At both volcanoes, the phreatic eruptions are initiated by a very-long-period (VLP) seismic event located at shallow depths between 700 and 900 m below the crater region, and may be triggered by excitation of gas trapped behind a ductile magma carapace. The shallow hydrothermal systems respond in different ways. At Kawah Ijen, the stress change induced by VLPs directly triggers an eigenoscillation of the hyperacidic lake. This so-called seiche is characterized by long-lasting, long-period oscillations with frequencies governed by the dimensions of the crater lake. A progressive lateral rupture of a seal below the crater lake and/or fluids migrating toward the surface is seismically recorded $$\sim$$ ∼ 15 min later as high-frequency bursts superimposed to tilt signals. At White Island, the hydrothermal system later ($$\sim$$ ∼ 25 min) responds by radiating harmonic tremor at a fixed location that could be generated through eddy-shedding. These seismic signals shed light on several aspects of phreatic eruptions, their generation and timeline. They are mostly recorded at periods longer than tens of seconds further emphasizing the need to deploy broadband seismic equipment close to active volcanic activity. Article in Journal/Newspaper White Island Directory of Open Access Journals: DOAJ Articles New Zealand White Island ENVELOPE(48.583,48.583,-66.733,-66.733) Crater Lake ENVELOPE(-60.667,-60.667,-62.983,-62.983) Earth, Planets and Space 70 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Volcanic monitoring Phreatic eruption Volcanic lake Broadband seismology Geography. Anthropology. Recreation G Geodesy QB275-343 Geology QE1-996.5 |
spellingShingle |
Volcanic monitoring Phreatic eruption Volcanic lake Broadband seismology Geography. Anthropology. Recreation G Geodesy QB275-343 Geology QE1-996.5 Corentin Caudron Benoit Taisne Jurgen Neuberg Arthur D. Jolly Bruce Christenson Thomas Lecocq Suparjan Devy Syahbana Gede Suantika Anatomy of phreatic eruptions |
topic_facet |
Volcanic monitoring Phreatic eruption Volcanic lake Broadband seismology Geography. Anthropology. Recreation G Geodesy QB275-343 Geology QE1-996.5 |
description |
Abstract This study investigates phreatic eruptions at two similar volcanoes, Kawah Ijen (Indonesia) and White Island (New Zealand). By carefully processing broadband seismic signals, we reveal seismic signatures and characteristics of these eruptions. At both volcanoes, the phreatic eruptions are initiated by a very-long-period (VLP) seismic event located at shallow depths between 700 and 900 m below the crater region, and may be triggered by excitation of gas trapped behind a ductile magma carapace. The shallow hydrothermal systems respond in different ways. At Kawah Ijen, the stress change induced by VLPs directly triggers an eigenoscillation of the hyperacidic lake. This so-called seiche is characterized by long-lasting, long-period oscillations with frequencies governed by the dimensions of the crater lake. A progressive lateral rupture of a seal below the crater lake and/or fluids migrating toward the surface is seismically recorded $$\sim$$ ∼ 15 min later as high-frequency bursts superimposed to tilt signals. At White Island, the hydrothermal system later ($$\sim$$ ∼ 25 min) responds by radiating harmonic tremor at a fixed location that could be generated through eddy-shedding. These seismic signals shed light on several aspects of phreatic eruptions, their generation and timeline. They are mostly recorded at periods longer than tens of seconds further emphasizing the need to deploy broadband seismic equipment close to active volcanic activity. |
format |
Article in Journal/Newspaper |
author |
Corentin Caudron Benoit Taisne Jurgen Neuberg Arthur D. Jolly Bruce Christenson Thomas Lecocq Suparjan Devy Syahbana Gede Suantika |
author_facet |
Corentin Caudron Benoit Taisne Jurgen Neuberg Arthur D. Jolly Bruce Christenson Thomas Lecocq Suparjan Devy Syahbana Gede Suantika |
author_sort |
Corentin Caudron |
title |
Anatomy of phreatic eruptions |
title_short |
Anatomy of phreatic eruptions |
title_full |
Anatomy of phreatic eruptions |
title_fullStr |
Anatomy of phreatic eruptions |
title_full_unstemmed |
Anatomy of phreatic eruptions |
title_sort |
anatomy of phreatic eruptions |
publisher |
SpringerOpen |
publishDate |
2018 |
url |
https://doi.org/10.1186/s40623-018-0938-x https://doaj.org/article/22d5725fd82d4bec93c85f3bd2e71ff1 |
long_lat |
ENVELOPE(48.583,48.583,-66.733,-66.733) ENVELOPE(-60.667,-60.667,-62.983,-62.983) |
geographic |
New Zealand White Island Crater Lake |
geographic_facet |
New Zealand White Island Crater Lake |
genre |
White Island |
genre_facet |
White Island |
op_source |
Earth, Planets and Space, Vol 70, Iss 1, Pp 1-14 (2018) |
op_relation |
http://link.springer.com/article/10.1186/s40623-018-0938-x https://doaj.org/toc/1880-5981 doi:10.1186/s40623-018-0938-x 1880-5981 https://doaj.org/article/22d5725fd82d4bec93c85f3bd2e71ff1 |
op_doi |
https://doi.org/10.1186/s40623-018-0938-x |
container_title |
Earth, Planets and Space |
container_volume |
70 |
container_issue |
1 |
_version_ |
1766234007234674688 |