Asymmetric caldera-related structures in the area of the Avacha group of volcanoes in Kamchatka as revealed by ambient noise tomography and deep seismic sounding
Avacha group includes two active and potentially dangerous volcanoes, Avachinsky and Koryaksky, located close to Petropavlovsk-Kamchatsky, the main city of Kamchatka. We present the results of two independent seismic studies of shallow crustal structures beneath the Avacha group based on passive and...
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ftinstvs:oai:repo.kscnet.ru:2539 2023-05-15T16:59:00+02:00 Asymmetric caldera-related structures in the area of the Avacha group of volcanoes in Kamchatka as revealed by ambient noise tomography and deep seismic sounding Koulakov Ivan Jaxybulatov Kayrly Shapiro Nikolay M. Abkadyrov Ilyas Deev Evgeny Jakovlev Andrey Kuznetsov Pavel Gordeev Evgeny Chebrov Viktor 2014 http://repo.kscnet.ru/2539/ http://www.sciencedirect.com/science/article/pii/S0377027314002522 en eng Koulakov Ivan <http://repo.kscnet.ru/view/creators/Koulakov=3AIvan=3A=3A.html>, Jaxybulatov Kayrly <http://repo.kscnet.ru/view/creators/Jaxybulatov=3AKayrly=3A=3A.html>, Shapiro Nikolay M. <http://repo.kscnet.ru/view/creators/Shapiro=3ANikolay_M=2E=3A=3A.html>, Abkadyrov Ilyas <http://repo.kscnet.ru/view/creators/Abkadyrov=3AIlyas=3A=3A.html>, Deev Evgeny <http://repo.kscnet.ru/view/creators/Deev=3AEvgeny=3A=3A.html>, Jakovlev Andrey <http://repo.kscnet.ru/view/creators/Jakovlev=3AAndrey=3A=3A.html>, Kuznetsov Pavel <http://repo.kscnet.ru/view/creators/Kuznetsov=3APavel=3A=3A.html>, Gordeev Evgeny <http://repo.kscnet.ru/view/creators/Gordeev=3AEvgeny=3A=3A.html>, Chebrov Viktor <http://repo.kscnet.ru/view/creators/Chebrov=3AViktor=3A=3A.html> (2014) Asymmetric caldera-related structures in the area of the Avacha group of volcanoes in Kamchatka as revealed by ambient noise tomography and deep seismic sounding // Journal of Volcanology and Geothermal Research. Vol. 285, pp. 36 - 46. doi:10.1016/j.jvolgeores.2014.08.012 <http://doi.org/10.1016/j.jvolgeores.2014.08.012>. 37.31.19 Сейсмология Авачинский Корякский Статья PeerReviewed 2014 ftinstvs https://doi.org/10.1016/j.jvolgeores.2014.08.012 2022-08-09T17:05:34Z Avacha group includes two active and potentially dangerous volcanoes, Avachinsky and Koryaksky, located close to Petropavlovsk-Kamchatsky, the main city of Kamchatka. We present the results of two independent seismic studies of shallow crustal structures beneath the Avacha group based on passive and active source observations. The first study is based on the analysis of continuous recording by 11 seismic stations installed over the Avacha group in 2012 and 7 permanent stations in the same region. We present a series of 2D Rayleigh-wave group velocity maps based on correlation of ambient noise, that were then converted into 3D distribution of shear wave velocity. The second work was based on the reprocessing of an active source deep seismic sounding profile across the Avachinsky volcano that was shot in 1982–1984. We made the analysis of travel times of refracted waves using a 2D tomography inversion. The resulting seismic models appear to be consistent with each other and show clear low-velocity zone to the SW of the Avachinsky volcano and high velocity structures to NE. These observations also agree with the existing gravity and magnetotelluric measurements. Based on the obtained seismic models we identify two large buried calderas and large lava flows that are thought to be related to a series of large eruption episodes of Avachinsky occurred within the last 30,000 years. Text Kamchatka Institute of Volcanology and Seismology, Petropavlovsk-Kamchatsky: IVS FEB RAS Repository Avacha ENVELOPE(158.503,158.503,53.040,53.040) Petropavlovsk ENVELOPE(158.626,158.626,53.067,53.067) Petropavlovsk-Kamchatsky ENVELOPE(158.651,158.651,53.044,53.044) Journal of Volcanology and Geothermal Research 285 36 46 |
institution |
Open Polar |
collection |
Institute of Volcanology and Seismology, Petropavlovsk-Kamchatsky: IVS FEB RAS Repository |
op_collection_id |
ftinstvs |
language |
English |
topic |
37.31.19 Сейсмология Авачинский Корякский |
spellingShingle |
37.31.19 Сейсмология Авачинский Корякский Koulakov Ivan Jaxybulatov Kayrly Shapiro Nikolay M. Abkadyrov Ilyas Deev Evgeny Jakovlev Andrey Kuznetsov Pavel Gordeev Evgeny Chebrov Viktor Asymmetric caldera-related structures in the area of the Avacha group of volcanoes in Kamchatka as revealed by ambient noise tomography and deep seismic sounding |
topic_facet |
37.31.19 Сейсмология Авачинский Корякский |
description |
Avacha group includes two active and potentially dangerous volcanoes, Avachinsky and Koryaksky, located close to Petropavlovsk-Kamchatsky, the main city of Kamchatka. We present the results of two independent seismic studies of shallow crustal structures beneath the Avacha group based on passive and active source observations. The first study is based on the analysis of continuous recording by 11 seismic stations installed over the Avacha group in 2012 and 7 permanent stations in the same region. We present a series of 2D Rayleigh-wave group velocity maps based on correlation of ambient noise, that were then converted into 3D distribution of shear wave velocity. The second work was based on the reprocessing of an active source deep seismic sounding profile across the Avachinsky volcano that was shot in 1982–1984. We made the analysis of travel times of refracted waves using a 2D tomography inversion. The resulting seismic models appear to be consistent with each other and show clear low-velocity zone to the SW of the Avachinsky volcano and high velocity structures to NE. These observations also agree with the existing gravity and magnetotelluric measurements. Based on the obtained seismic models we identify two large buried calderas and large lava flows that are thought to be related to a series of large eruption episodes of Avachinsky occurred within the last 30,000 years. |
format |
Text |
author |
Koulakov Ivan Jaxybulatov Kayrly Shapiro Nikolay M. Abkadyrov Ilyas Deev Evgeny Jakovlev Andrey Kuznetsov Pavel Gordeev Evgeny Chebrov Viktor |
author_facet |
Koulakov Ivan Jaxybulatov Kayrly Shapiro Nikolay M. Abkadyrov Ilyas Deev Evgeny Jakovlev Andrey Kuznetsov Pavel Gordeev Evgeny Chebrov Viktor |
author_sort |
Koulakov Ivan |
title |
Asymmetric caldera-related structures in the area of the Avacha group of volcanoes in Kamchatka as revealed by ambient noise tomography and deep seismic sounding |
title_short |
Asymmetric caldera-related structures in the area of the Avacha group of volcanoes in Kamchatka as revealed by ambient noise tomography and deep seismic sounding |
title_full |
Asymmetric caldera-related structures in the area of the Avacha group of volcanoes in Kamchatka as revealed by ambient noise tomography and deep seismic sounding |
title_fullStr |
Asymmetric caldera-related structures in the area of the Avacha group of volcanoes in Kamchatka as revealed by ambient noise tomography and deep seismic sounding |
title_full_unstemmed |
Asymmetric caldera-related structures in the area of the Avacha group of volcanoes in Kamchatka as revealed by ambient noise tomography and deep seismic sounding |
title_sort |
asymmetric caldera-related structures in the area of the avacha group of volcanoes in kamchatka as revealed by ambient noise tomography and deep seismic sounding |
publishDate |
2014 |
url |
http://repo.kscnet.ru/2539/ http://www.sciencedirect.com/science/article/pii/S0377027314002522 |
long_lat |
ENVELOPE(158.503,158.503,53.040,53.040) ENVELOPE(158.626,158.626,53.067,53.067) ENVELOPE(158.651,158.651,53.044,53.044) |
geographic |
Avacha Petropavlovsk Petropavlovsk-Kamchatsky |
geographic_facet |
Avacha Petropavlovsk Petropavlovsk-Kamchatsky |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_relation |
Koulakov Ivan <http://repo.kscnet.ru/view/creators/Koulakov=3AIvan=3A=3A.html>, Jaxybulatov Kayrly <http://repo.kscnet.ru/view/creators/Jaxybulatov=3AKayrly=3A=3A.html>, Shapiro Nikolay M. <http://repo.kscnet.ru/view/creators/Shapiro=3ANikolay_M=2E=3A=3A.html>, Abkadyrov Ilyas <http://repo.kscnet.ru/view/creators/Abkadyrov=3AIlyas=3A=3A.html>, Deev Evgeny <http://repo.kscnet.ru/view/creators/Deev=3AEvgeny=3A=3A.html>, Jakovlev Andrey <http://repo.kscnet.ru/view/creators/Jakovlev=3AAndrey=3A=3A.html>, Kuznetsov Pavel <http://repo.kscnet.ru/view/creators/Kuznetsov=3APavel=3A=3A.html>, Gordeev Evgeny <http://repo.kscnet.ru/view/creators/Gordeev=3AEvgeny=3A=3A.html>, Chebrov Viktor <http://repo.kscnet.ru/view/creators/Chebrov=3AViktor=3A=3A.html> (2014) Asymmetric caldera-related structures in the area of the Avacha group of volcanoes in Kamchatka as revealed by ambient noise tomography and deep seismic sounding // Journal of Volcanology and Geothermal Research. Vol. 285, pp. 36 - 46. doi:10.1016/j.jvolgeores.2014.08.012 <http://doi.org/10.1016/j.jvolgeores.2014.08.012>. |
op_doi |
https://doi.org/10.1016/j.jvolgeores.2014.08.012 |
container_title |
Journal of Volcanology and Geothermal Research |
container_volume |
285 |
container_start_page |
36 |
op_container_end_page |
46 |
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1766051154323570688 |