Features of the Largest Earthquake Seismic Cycles in the Western Part of the Aleutian Subduction Zone
We discussed the peculiarities of the seismic cycle in Aleutian subduction zone, characterized by an oblique subduction setting. It was shown that the orientation of the plate convergence vector relative to the subduction zone axis can have a significant impact on the preparation and occurrence of t...
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2022
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ftdoajarticles:oai:doaj.org/article:5661c9c058a1458d88a1a4cd0d002797 2023-05-15T13:14:43+02:00 Features of the Largest Earthquake Seismic Cycles in the Western Part of the Aleutian Subduction Zone Leopold I. Lobkovsky Irina S. Vladimirova Yurii V. Gabsatarov Dmitry A. Alekseev 2022-02-01T00:00:00Z https://doi.org/10.3390/geosciences12030107 https://doaj.org/article/5661c9c058a1458d88a1a4cd0d002797 EN eng MDPI AG https://www.mdpi.com/2076-3263/12/3/107 https://doaj.org/toc/2076-3263 doi:10.3390/geosciences12030107 2076-3263 https://doaj.org/article/5661c9c058a1458d88a1a4cd0d002797 Geosciences, Vol 12, Iss 107, p 107 (2022) largest earthquakes oblique subduction seismic cycles Aleutian subduction zone geodynamics stress accumulation Geology QE1-996.5 article 2022 ftdoajarticles https://doi.org/10.3390/geosciences12030107 2022-12-31T03:39:17Z We discussed the peculiarities of the seismic cycle in Aleutian subduction zone, characterized by an oblique subduction setting. It was shown that the orientation of the plate convergence vector relative to the subduction zone axis can have a significant impact on the preparation and occurrence of the largest earthquakes in subduction zones. In particular, from the analysis of the seismic activity occurring in the western part of the Aleutian island arc, it was found that the seismic cycles here are shorter than in the eastern part of the arc. It was revealed that the strongest earthquakes, repeating in the same areas of the western part of the Aleutian subduction zone, differ both in magnitude and length of the fault zone. Taking into account the oblique subduction setting, we proposed the keyboard model of the largest megathrust earthquakes generation as a mechanism potentially capable of explaining the reduction in the seismic cycle duration and noticeable differences in the spatial extent and localization of the fault zones of events with similar magnitudes occurring in the same segment of the western half of the Aleutian subduction zone. Article in Journal/Newspaper Aleutian Island Directory of Open Access Journals: DOAJ Articles Geosciences 12 3 107 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
largest earthquakes oblique subduction seismic cycles Aleutian subduction zone geodynamics stress accumulation Geology QE1-996.5 |
spellingShingle |
largest earthquakes oblique subduction seismic cycles Aleutian subduction zone geodynamics stress accumulation Geology QE1-996.5 Leopold I. Lobkovsky Irina S. Vladimirova Yurii V. Gabsatarov Dmitry A. Alekseev Features of the Largest Earthquake Seismic Cycles in the Western Part of the Aleutian Subduction Zone |
topic_facet |
largest earthquakes oblique subduction seismic cycles Aleutian subduction zone geodynamics stress accumulation Geology QE1-996.5 |
description |
We discussed the peculiarities of the seismic cycle in Aleutian subduction zone, characterized by an oblique subduction setting. It was shown that the orientation of the plate convergence vector relative to the subduction zone axis can have a significant impact on the preparation and occurrence of the largest earthquakes in subduction zones. In particular, from the analysis of the seismic activity occurring in the western part of the Aleutian island arc, it was found that the seismic cycles here are shorter than in the eastern part of the arc. It was revealed that the strongest earthquakes, repeating in the same areas of the western part of the Aleutian subduction zone, differ both in magnitude and length of the fault zone. Taking into account the oblique subduction setting, we proposed the keyboard model of the largest megathrust earthquakes generation as a mechanism potentially capable of explaining the reduction in the seismic cycle duration and noticeable differences in the spatial extent and localization of the fault zones of events with similar magnitudes occurring in the same segment of the western half of the Aleutian subduction zone. |
format |
Article in Journal/Newspaper |
author |
Leopold I. Lobkovsky Irina S. Vladimirova Yurii V. Gabsatarov Dmitry A. Alekseev |
author_facet |
Leopold I. Lobkovsky Irina S. Vladimirova Yurii V. Gabsatarov Dmitry A. Alekseev |
author_sort |
Leopold I. Lobkovsky |
title |
Features of the Largest Earthquake Seismic Cycles in the Western Part of the Aleutian Subduction Zone |
title_short |
Features of the Largest Earthquake Seismic Cycles in the Western Part of the Aleutian Subduction Zone |
title_full |
Features of the Largest Earthquake Seismic Cycles in the Western Part of the Aleutian Subduction Zone |
title_fullStr |
Features of the Largest Earthquake Seismic Cycles in the Western Part of the Aleutian Subduction Zone |
title_full_unstemmed |
Features of the Largest Earthquake Seismic Cycles in the Western Part of the Aleutian Subduction Zone |
title_sort |
features of the largest earthquake seismic cycles in the western part of the aleutian subduction zone |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/geosciences12030107 https://doaj.org/article/5661c9c058a1458d88a1a4cd0d002797 |
genre |
Aleutian Island |
genre_facet |
Aleutian Island |
op_source |
Geosciences, Vol 12, Iss 107, p 107 (2022) |
op_relation |
https://www.mdpi.com/2076-3263/12/3/107 https://doaj.org/toc/2076-3263 doi:10.3390/geosciences12030107 2076-3263 https://doaj.org/article/5661c9c058a1458d88a1a4cd0d002797 |
op_doi |
https://doi.org/10.3390/geosciences12030107 |
container_title |
Geosciences |
container_volume |
12 |
container_issue |
3 |
container_start_page |
107 |
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1766265093845155840 |