Clustering of Long-Period Earthquakes Beneath Gorely Volcano (Kamchatka) during a Degassing Episode in 2013
International audience Gorely is one of the most active volcanoes in Kamchatka with a rich magmatic and eruptive history reflected in its composite structure. In 2013-2014, a temporary network of 20 seismic stations was installed on Gorely for one year. During the four months of its high degassing r...
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Online Access: | https://hal.science/hal-02878814 https://hal.science/hal-02878814/document https://hal.science/hal-02878814/file/Abramenkov_etal_geosciences2020.pdf https://doi.org/10.3390/geosciences10060230 |
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ftunivnantes:oai:HAL:hal-02878814v1 2023-05-15T16:59:01+02:00 Clustering of Long-Period Earthquakes Beneath Gorely Volcano (Kamchatka) during a Degassing Episode in 2013 Abramenkov, Sergei Shapiro, Nikolaï Koulakov, Ivan Abkadyrov, Ilyas Institut de Physique du Globe de Paris (IPGP) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS) Novosibirsk State University Institute of Volcanology and Seismology of the RAS Far Eastern Branch of the Russian Academy of Sciences (FEB RAS) 2020-06-14 https://hal.science/hal-02878814 https://hal.science/hal-02878814/document https://hal.science/hal-02878814/file/Abramenkov_etal_geosciences2020.pdf https://doi.org/10.3390/geosciences10060230 en eng HAL CCSD MDPI info:eu-repo/semantics/altIdentifier/doi/10.3390/geosciences10060230 hal-02878814 https://hal.science/hal-02878814 https://hal.science/hal-02878814/document https://hal.science/hal-02878814/file/Abramenkov_etal_geosciences2020.pdf doi:10.3390/geosciences10060230 info:eu-repo/semantics/OpenAccess ISSN: 2076-3263 Geosciences https://hal.science/hal-02878814 Geosciences, 2020, ⟨10.3390/geosciences10060230⟩ Gorely volcano degassing long-period seismicity cluster analysis back-projection matched-filter [SDU]Sciences of the Universe [physics] [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology info:eu-repo/semantics/article Journal articles 2020 ftunivnantes https://doi.org/10.3390/geosciences10060230 2023-02-01T00:44:27Z International audience Gorely is one of the most active volcanoes in Kamchatka with a rich magmatic and eruptive history reflected in its composite structure. In 2013-2014, a temporary network of 20 seismic stations was installed on Gorely for one year. During the four months of its high degassing rate, seismic activity was mostly expressed in the form of a long-period (LP) seismic tremor. In this study, we have developed a workflow based on the combination of back-projection (BP), cluster analysis, and matched-filter (MF) methods. By applying it to continuous seismic records for the study period, we were able to identify discrete LP events within the tremor sequence automatically and individually investigate their properties. A catalog obtained using the BP detection algorithm consist of 1741 high-energy events. Cluster analysis revealed that the entire variety of LP earthquakes in this catalog could be grouped into five families, which are sequentially organized in time. Utilizing templates of these families in the MF search resulted in the complementary catalog of 80,615 low-energy events. The long-term occurrence of highly repetitive LP events in the same location may correspond to resonating conduits behaving in response to the high-pressure gases flowing from the decompressed magma chamber up to the volcano's crater. Article in Journal/Newspaper Kamchatka Université de Nantes: HAL-UNIV-NANTES Geosciences 10 6 230 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Gorely volcano degassing long-period seismicity cluster analysis back-projection matched-filter [SDU]Sciences of the Universe [physics] [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology |
spellingShingle |
Gorely volcano degassing long-period seismicity cluster analysis back-projection matched-filter [SDU]Sciences of the Universe [physics] [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology Abramenkov, Sergei Shapiro, Nikolaï Koulakov, Ivan Abkadyrov, Ilyas Clustering of Long-Period Earthquakes Beneath Gorely Volcano (Kamchatka) during a Degassing Episode in 2013 |
topic_facet |
Gorely volcano degassing long-period seismicity cluster analysis back-projection matched-filter [SDU]Sciences of the Universe [physics] [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology |
description |
International audience Gorely is one of the most active volcanoes in Kamchatka with a rich magmatic and eruptive history reflected in its composite structure. In 2013-2014, a temporary network of 20 seismic stations was installed on Gorely for one year. During the four months of its high degassing rate, seismic activity was mostly expressed in the form of a long-period (LP) seismic tremor. In this study, we have developed a workflow based on the combination of back-projection (BP), cluster analysis, and matched-filter (MF) methods. By applying it to continuous seismic records for the study period, we were able to identify discrete LP events within the tremor sequence automatically and individually investigate their properties. A catalog obtained using the BP detection algorithm consist of 1741 high-energy events. Cluster analysis revealed that the entire variety of LP earthquakes in this catalog could be grouped into five families, which are sequentially organized in time. Utilizing templates of these families in the MF search resulted in the complementary catalog of 80,615 low-energy events. The long-term occurrence of highly repetitive LP events in the same location may correspond to resonating conduits behaving in response to the high-pressure gases flowing from the decompressed magma chamber up to the volcano's crater. |
author2 |
Institut de Physique du Globe de Paris (IPGP) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS) Novosibirsk State University Institute of Volcanology and Seismology of the RAS Far Eastern Branch of the Russian Academy of Sciences (FEB RAS) |
format |
Article in Journal/Newspaper |
author |
Abramenkov, Sergei Shapiro, Nikolaï Koulakov, Ivan Abkadyrov, Ilyas |
author_facet |
Abramenkov, Sergei Shapiro, Nikolaï Koulakov, Ivan Abkadyrov, Ilyas |
author_sort |
Abramenkov, Sergei |
title |
Clustering of Long-Period Earthquakes Beneath Gorely Volcano (Kamchatka) during a Degassing Episode in 2013 |
title_short |
Clustering of Long-Period Earthquakes Beneath Gorely Volcano (Kamchatka) during a Degassing Episode in 2013 |
title_full |
Clustering of Long-Period Earthquakes Beneath Gorely Volcano (Kamchatka) during a Degassing Episode in 2013 |
title_fullStr |
Clustering of Long-Period Earthquakes Beneath Gorely Volcano (Kamchatka) during a Degassing Episode in 2013 |
title_full_unstemmed |
Clustering of Long-Period Earthquakes Beneath Gorely Volcano (Kamchatka) during a Degassing Episode in 2013 |
title_sort |
clustering of long-period earthquakes beneath gorely volcano (kamchatka) during a degassing episode in 2013 |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.science/hal-02878814 https://hal.science/hal-02878814/document https://hal.science/hal-02878814/file/Abramenkov_etal_geosciences2020.pdf https://doi.org/10.3390/geosciences10060230 |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_source |
ISSN: 2076-3263 Geosciences https://hal.science/hal-02878814 Geosciences, 2020, ⟨10.3390/geosciences10060230⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3390/geosciences10060230 hal-02878814 https://hal.science/hal-02878814 https://hal.science/hal-02878814/document https://hal.science/hal-02878814/file/Abramenkov_etal_geosciences2020.pdf doi:10.3390/geosciences10060230 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3390/geosciences10060230 |
container_title |
Geosciences |
container_volume |
10 |
container_issue |
6 |
container_start_page |
230 |
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1766051186458230784 |