Study and modelling of rapid shoreline displacement due to coseismic subsidence along the Kamchatka subduction zone
Abstract The first studies of geological evidences of coastal coseismic subsidence (associated with subduction-zone earthquakes) were carried out in Russia at the Institute of Volcanology and Seismology, in Kamchatka. We developed a special method based on tephrostratigraphy and tephrochronology, de...
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crioppubl:10.1088/1755-1315/946/1/012001 2024-06-02T08:09:42+00:00 Study and modelling of rapid shoreline displacement due to coseismic subsidence along the Kamchatka subduction zone Khomchanovsky, A Batanov, F Pinegina, T 2021 http://dx.doi.org/10.1088/1755-1315/946/1/012001 https://iopscience.iop.org/article/10.1088/1755-1315/946/1/012001 https://iopscience.iop.org/article/10.1088/1755-1315/946/1/012001/pdf unknown IOP Publishing http://creativecommons.org/licenses/by/3.0/ https://iopscience.iop.org/info/page/text-and-data-mining IOP Conference Series: Earth and Environmental Science volume 946, issue 1, page 012001 ISSN 1755-1307 1755-1315 journal-article 2021 crioppubl https://doi.org/10.1088/1755-1315/946/1/012001 2024-05-07T13:58:40Z Abstract The first studies of geological evidences of coastal coseismic subsidence (associated with subduction-zone earthquakes) were carried out in Russia at the Institute of Volcanology and Seismology, in Kamchatka. We developed a special method based on tephrostratigraphy and tephrochronology, descriptions and dating of the soil-pyroclastic sequence (SPS) overlying the coastal wave-build beach ridges. Three seismic events accompanied by coastal coseismic subsidence were detected in the northern part of Avachinsky Bay during the past ~5 thousand years. We found subsidence from one of the greatest historical tsunamigenic earthquake (1952 AD) south of Petropavlovsk-Kamchatsky. We identified, that 5 events of coastal coseismic subsidence had occurred during the past ~6 thousand years at the coast of Kronotsky Bay and Shipunsky Peninsula. Amplitudes of subsidence were estimated by geological data using three different methods. Erosion of the active beach and marine accumulative terrace becomes active after coastal subsidence. We calculated the shoreline retreat process and the amount of horizontal erosion by numerical simulation using Bruun rule. In some areas, shoreline retreat was about 300 m according to the model results. Article in Journal/Newspaper Kamchatka IOP Publishing Petropavlovsk ENVELOPE(158.626,158.626,53.067,53.067) Petropavlovsk-Kamchatsky ENVELOPE(158.651,158.651,53.044,53.044) IOP Conference Series: Earth and Environmental Science 946 1 012001 |
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Abstract The first studies of geological evidences of coastal coseismic subsidence (associated with subduction-zone earthquakes) were carried out in Russia at the Institute of Volcanology and Seismology, in Kamchatka. We developed a special method based on tephrostratigraphy and tephrochronology, descriptions and dating of the soil-pyroclastic sequence (SPS) overlying the coastal wave-build beach ridges. Three seismic events accompanied by coastal coseismic subsidence were detected in the northern part of Avachinsky Bay during the past ~5 thousand years. We found subsidence from one of the greatest historical tsunamigenic earthquake (1952 AD) south of Petropavlovsk-Kamchatsky. We identified, that 5 events of coastal coseismic subsidence had occurred during the past ~6 thousand years at the coast of Kronotsky Bay and Shipunsky Peninsula. Amplitudes of subsidence were estimated by geological data using three different methods. Erosion of the active beach and marine accumulative terrace becomes active after coastal subsidence. We calculated the shoreline retreat process and the amount of horizontal erosion by numerical simulation using Bruun rule. In some areas, shoreline retreat was about 300 m according to the model results. |
format |
Article in Journal/Newspaper |
author |
Khomchanovsky, A Batanov, F Pinegina, T |
spellingShingle |
Khomchanovsky, A Batanov, F Pinegina, T Study and modelling of rapid shoreline displacement due to coseismic subsidence along the Kamchatka subduction zone |
author_facet |
Khomchanovsky, A Batanov, F Pinegina, T |
author_sort |
Khomchanovsky, A |
title |
Study and modelling of rapid shoreline displacement due to coseismic subsidence along the Kamchatka subduction zone |
title_short |
Study and modelling of rapid shoreline displacement due to coseismic subsidence along the Kamchatka subduction zone |
title_full |
Study and modelling of rapid shoreline displacement due to coseismic subsidence along the Kamchatka subduction zone |
title_fullStr |
Study and modelling of rapid shoreline displacement due to coseismic subsidence along the Kamchatka subduction zone |
title_full_unstemmed |
Study and modelling of rapid shoreline displacement due to coseismic subsidence along the Kamchatka subduction zone |
title_sort |
study and modelling of rapid shoreline displacement due to coseismic subsidence along the kamchatka subduction zone |
publisher |
IOP Publishing |
publishDate |
2021 |
url |
http://dx.doi.org/10.1088/1755-1315/946/1/012001 https://iopscience.iop.org/article/10.1088/1755-1315/946/1/012001 https://iopscience.iop.org/article/10.1088/1755-1315/946/1/012001/pdf |
long_lat |
ENVELOPE(158.626,158.626,53.067,53.067) ENVELOPE(158.651,158.651,53.044,53.044) |
geographic |
Petropavlovsk Petropavlovsk-Kamchatsky |
geographic_facet |
Petropavlovsk Petropavlovsk-Kamchatsky |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_source |
IOP Conference Series: Earth and Environmental Science volume 946, issue 1, page 012001 ISSN 1755-1307 1755-1315 |
op_rights |
http://creativecommons.org/licenses/by/3.0/ https://iopscience.iop.org/info/page/text-and-data-mining |
op_doi |
https://doi.org/10.1088/1755-1315/946/1/012001 |
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IOP Conference Series: Earth and Environmental Science |
container_volume |
946 |
container_issue |
1 |
container_start_page |
012001 |
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1800755477209939968 |