Anatomy of the Bezymianny volcano merely before an explosive eruption on 20.12.2017
Abstract Strong explosive eruptions of volcanoes throw out mixtures of gases and ash from high-pressure underground reservoirs. Investigating these subsurface reservoirs may help to forecast and characterize an eruption. In this study, we compare seismic tomography results with remote sensing and pe...
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ftdoajarticles:oai:doaj.org/article:f034f580430c4939b67249a5c3cca70d 2023-05-15T16:59:17+02:00 Anatomy of the Bezymianny volcano merely before an explosive eruption on 20.12.2017 Ivan Koulakov Pavel Plechov René Mania Thomas R. Walter Sergey Z. Smirnov Ilyas Abkadyrov Andrey Jakovlev Vesta Davydova Sergey Senyukov Natalia Bushenkova Angelika Novgorodova Tatyana Stupina Svetlana Ya. Droznina 2021-01-01T00:00:00Z https://doi.org/10.1038/s41598-021-81498-9 https://doaj.org/article/f034f580430c4939b67249a5c3cca70d EN eng Nature Portfolio https://doi.org/10.1038/s41598-021-81498-9 https://doaj.org/toc/2045-2322 doi:10.1038/s41598-021-81498-9 2045-2322 https://doaj.org/article/f034f580430c4939b67249a5c3cca70d Scientific Reports, Vol 11, Iss 1, Pp 1-12 (2021) Medicine R Science Q article 2021 ftdoajarticles https://doi.org/10.1038/s41598-021-81498-9 2022-12-31T13:58:28Z Abstract Strong explosive eruptions of volcanoes throw out mixtures of gases and ash from high-pressure underground reservoirs. Investigating these subsurface reservoirs may help to forecast and characterize an eruption. In this study, we compare seismic tomography results with remote sensing and petrology data to identify deep and subaerial manifestations of pre-eruptive processes at Bezymianny volcano in Kamchatka shortly before its violent explosion on December 20, 2017. Based on camera networks we identify precursory rockfalls, and based on satellite radar data we find pre-eruptive summit inflation. Our seismic network recorded the P and S wave data from over 500 local earthquakes used to invert for a 3D seismic velocity distribution beneath Bezymianny illuminating its eruptive state days before the eruption. The derived tomography model, in conjunction with the presence of the high-temperature-stable SiO2 polymorph Tridymite in juvenile rock samples , allowed us to infer the coexistence of magma and gas reservoirs revealed as anomalies of low (1.5) and high (2.0) Vp/Vs ratios, respectively, located at depths of 2–3 km and only 2 km apart. The reservoirs both control the current eruptive activity: while the magma reservoir is responsible for episodic dome growth and lava flow emplacements, the spatially separated gas reservoir may control short but powerful explosive eruptions of Bezymianny. Article in Journal/Newspaper Kamchatka Directory of Open Access Journals: DOAJ Articles Scientific Reports 11 1 |
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Medicine R Science Q |
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Medicine R Science Q Ivan Koulakov Pavel Plechov René Mania Thomas R. Walter Sergey Z. Smirnov Ilyas Abkadyrov Andrey Jakovlev Vesta Davydova Sergey Senyukov Natalia Bushenkova Angelika Novgorodova Tatyana Stupina Svetlana Ya. Droznina Anatomy of the Bezymianny volcano merely before an explosive eruption on 20.12.2017 |
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Medicine R Science Q |
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Abstract Strong explosive eruptions of volcanoes throw out mixtures of gases and ash from high-pressure underground reservoirs. Investigating these subsurface reservoirs may help to forecast and characterize an eruption. In this study, we compare seismic tomography results with remote sensing and petrology data to identify deep and subaerial manifestations of pre-eruptive processes at Bezymianny volcano in Kamchatka shortly before its violent explosion on December 20, 2017. Based on camera networks we identify precursory rockfalls, and based on satellite radar data we find pre-eruptive summit inflation. Our seismic network recorded the P and S wave data from over 500 local earthquakes used to invert for a 3D seismic velocity distribution beneath Bezymianny illuminating its eruptive state days before the eruption. The derived tomography model, in conjunction with the presence of the high-temperature-stable SiO2 polymorph Tridymite in juvenile rock samples , allowed us to infer the coexistence of magma and gas reservoirs revealed as anomalies of low (1.5) and high (2.0) Vp/Vs ratios, respectively, located at depths of 2–3 km and only 2 km apart. The reservoirs both control the current eruptive activity: while the magma reservoir is responsible for episodic dome growth and lava flow emplacements, the spatially separated gas reservoir may control short but powerful explosive eruptions of Bezymianny. |
format |
Article in Journal/Newspaper |
author |
Ivan Koulakov Pavel Plechov René Mania Thomas R. Walter Sergey Z. Smirnov Ilyas Abkadyrov Andrey Jakovlev Vesta Davydova Sergey Senyukov Natalia Bushenkova Angelika Novgorodova Tatyana Stupina Svetlana Ya. Droznina |
author_facet |
Ivan Koulakov Pavel Plechov René Mania Thomas R. Walter Sergey Z. Smirnov Ilyas Abkadyrov Andrey Jakovlev Vesta Davydova Sergey Senyukov Natalia Bushenkova Angelika Novgorodova Tatyana Stupina Svetlana Ya. Droznina |
author_sort |
Ivan Koulakov |
title |
Anatomy of the Bezymianny volcano merely before an explosive eruption on 20.12.2017 |
title_short |
Anatomy of the Bezymianny volcano merely before an explosive eruption on 20.12.2017 |
title_full |
Anatomy of the Bezymianny volcano merely before an explosive eruption on 20.12.2017 |
title_fullStr |
Anatomy of the Bezymianny volcano merely before an explosive eruption on 20.12.2017 |
title_full_unstemmed |
Anatomy of the Bezymianny volcano merely before an explosive eruption on 20.12.2017 |
title_sort |
anatomy of the bezymianny volcano merely before an explosive eruption on 20.12.2017 |
publisher |
Nature Portfolio |
publishDate |
2021 |
url |
https://doi.org/10.1038/s41598-021-81498-9 https://doaj.org/article/f034f580430c4939b67249a5c3cca70d |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_source |
Scientific Reports, Vol 11, Iss 1, Pp 1-12 (2021) |
op_relation |
https://doi.org/10.1038/s41598-021-81498-9 https://doaj.org/toc/2045-2322 doi:10.1038/s41598-021-81498-9 2045-2322 https://doaj.org/article/f034f580430c4939b67249a5c3cca70d |
op_doi |
https://doi.org/10.1038/s41598-021-81498-9 |
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Scientific Reports |
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11 |
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1 |
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1766051520173834240 |