TECTONIC STRESS FIELD AT INTERMEDIATE DEPTHS OF THE SOUTHERN FLANK OF THE KURIL-KAMCHATKA SEISMIC ZONE

The study has been done on the orientation of the principal axes of tectonic stress field at intermediate depths of earthquakes of the southern flank of the Kuril-Kamchatka subduction system separately for the upper and lower double seismic focal zones. Use has been made of the NIED and GlobalCMT ca...

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Main Authors: D. A. Safonov, Д. А. Сафонов
Other Authors: The work was funded from the government budget for the IMGG FEB RAS, Работа выполнена в рамках государственного задания ИМГиГ ДВО РАН
Format: Article in Journal/Newspaper
Language:Russian
Published: Institute of the Earth's crust of the Russian Academy of Sciences, Siberian Branch 2021
Subjects:
промежуточные глубины
double seismic focal zone
tectonic stress field
slab
intermediate depth
двойная сейсмофокальная зона
поле тектонических напряжений
слэб
Kamchatka
Online Access:https://www.gt-crust.ru/jour/article/view/1374
https://doi.org/10.5800/GT-2021-12-4-0564
id ftjgat:oai:oai.gtcrust.elpub.ru:article/1374
record_format openpolar
institution Open Polar
collection Geodynamics & Tectonophysics
op_collection_id ftjgat
language Russian
topic промежуточные глубины
double seismic focal zone
tectonic stress field
slab
intermediate depth
двойная сейсмофокальная зона
поле тектонических напряжений
слэб
spellingShingle промежуточные глубины
double seismic focal zone
tectonic stress field
slab
intermediate depth
двойная сейсмофокальная зона
поле тектонических напряжений
слэб
D. A. Safonov
Д. А. Сафонов
TECTONIC STRESS FIELD AT INTERMEDIATE DEPTHS OF THE SOUTHERN FLANK OF THE KURIL-KAMCHATKA SEISMIC ZONE
topic_facet промежуточные глубины
double seismic focal zone
tectonic stress field
slab
intermediate depth
двойная сейсмофокальная зона
поле тектонических напряжений
слэб
description The study has been done on the orientation of the principal axes of tectonic stress field at intermediate depths of earthquakes of the southern flank of the Kuril-Kamchatka subduction system separately for the upper and lower double seismic focal zones. Use has been made of the NIED and GlobalCMT catalogue data. The computation-based results are presented on schemes of the stressed state of the investigated areas and in tables. In the context of the southern Kuril Islands, evidence has been provided for predominance of the maximum compressive stresses along the slab plane in the upper layer and minimal compressive stresses (deviation extension) in the lower layer. However, the principal axes of maximum and minimum compression are displaced in direction relative to the slab dip: by 30–40° counterclockwise for the compression axis in the upper layer, which coincides with the direction of plate movement, and clockwise for the extension axis in the lower layer. This might be caused by the right-lateral strike-slip component of the Pacific Plate subduction. Unlike the general trend, the orientation of the principal axes of the stress field beneath the central Hokkaido-related segments in the upper layer is almost identical to that in the lower layer. There have also been found the segments exposed to shear stress, with the most extensive located opposite the northern Kunashir Island and beneath the southern Hokkaido Island. The results obtained for major large groups of clusters show good accordance with those published by other authors. The discrepancies relate primarily to small groups of isolated clusters showing local stress field heterogeneities. Исследовано поле ориентаций осей главных тектонических напряжений на участке промежуточных глубин землетрясений южного фланга Курило-Камчатской субдукционной системы отдельно для верхнего и нижнего слоя двойной сейсмофокальной зоны. Привлечены данные каталогов NIED и GlobalCMT. Результаты расчетов представлены в виде схем напряженного состояния изучаемых областей и ...
author2 The work was funded from the government budget for the IMGG FEB RAS
Работа выполнена в рамках государственного задания ИМГиГ ДВО РАН
format Article in Journal/Newspaper
author D. A. Safonov
Д. А. Сафонов
author_facet D. A. Safonov
Д. А. Сафонов
author_sort D. A. Safonov
title TECTONIC STRESS FIELD AT INTERMEDIATE DEPTHS OF THE SOUTHERN FLANK OF THE KURIL-KAMCHATKA SEISMIC ZONE
title_short TECTONIC STRESS FIELD AT INTERMEDIATE DEPTHS OF THE SOUTHERN FLANK OF THE KURIL-KAMCHATKA SEISMIC ZONE
title_full TECTONIC STRESS FIELD AT INTERMEDIATE DEPTHS OF THE SOUTHERN FLANK OF THE KURIL-KAMCHATKA SEISMIC ZONE
title_fullStr TECTONIC STRESS FIELD AT INTERMEDIATE DEPTHS OF THE SOUTHERN FLANK OF THE KURIL-KAMCHATKA SEISMIC ZONE
title_full_unstemmed TECTONIC STRESS FIELD AT INTERMEDIATE DEPTHS OF THE SOUTHERN FLANK OF THE KURIL-KAMCHATKA SEISMIC ZONE
title_sort tectonic stress field at intermediate depths of the southern flank of the kuril-kamchatka seismic zone
publisher Institute of the Earth's crust of the Russian Academy of Sciences, Siberian Branch
publishDate 2021
url https://www.gt-crust.ru/jour/article/view/1374
https://doi.org/10.5800/GT-2021-12-4-0564
genre Kamchatka
genre_facet Kamchatka
op_source Geodynamics & Tectonophysics; Том 12, № 4 (2021); 929-950
Геодинамика и тектонофизика; Том 12, № 4 (2021); 929-950
2078-502X
op_relation https://www.gt-crust.ru/jour/article/view/1374/599
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https://www.gt-crust.ru/jour/article/view/1374
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op_doi https://doi.org/10.5800/GT-2021-12-4-056410.1016/j.softx.2019.03.00810.1016/0031-9201(88)90138-010.1111/j.1365-246X.2004.02450.x10.1016/j.jog.2014.11.00110.1016/S0264-3707(00)00009-010.1029/2011GC00386010.1111/j.1365-246X.1981.tb05950.x10.1029/JB089iB11p0
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spelling ftjgat:oai:oai.gtcrust.elpub.ru:article/1374 2024-09-15T18:15:58+00:00 TECTONIC STRESS FIELD AT INTERMEDIATE DEPTHS OF THE SOUTHERN FLANK OF THE KURIL-KAMCHATKA SEISMIC ZONE ПОЛЕ ТЕКТОНИЧЕСКИХ НАПРЯЖЕНИЙ НА ПРОМЕЖУТОЧНЫХ ГЛУБИНАХ ЮЖНОГО ФЛАНГА КУРИЛО-КАМЧАТСКОЙ СЕЙСМОФОКАЛЬНОЙ ЗОНЫ D. A. Safonov Д. А. Сафонов The work was funded from the government budget for the IMGG FEB RAS Работа выполнена в рамках государственного задания ИМГиГ ДВО РАН 2021-12-14 application/pdf https://www.gt-crust.ru/jour/article/view/1374 https://doi.org/10.5800/GT-2021-12-4-0564 rus rus Institute of the Earth's crust of the Russian Academy of Sciences, Siberian Branch https://www.gt-crust.ru/jour/article/view/1374/599 Álvarez-Gómez J.A., 2019. FMC–Earthquake Focal Mechanisms Data Management, Cluster and Classification. SoftwareX 9, 299–307. https://doi.org/10.1016/j.softx.2019.03.008. Astiz L., Lay T., Kanamori H., 1988. Large Intermediate-Depth Earthquakes and the Subduction Process. Physics of the Earth and Planetary Interiors 53 (1–2), 80–166. https://doi.org/10.1016/0031-9201(88)90138-0. Борискина Н.Г., Касаткин С.А., Хомич В.Г. Геология, геодинамика и благороднометалльное оруденение южного фланга Курильской островодужной системы // Успехи современного естествознания. 2019. № 8. С. 44–49. Chen P.F., Bina C.R., Okal E.A., 2004. A Global Survey of Stress Orientations in Subducting Slabs as Revealed by Intermediate-Depth Earthquakes. Geophysical Journal International 159 (2), 721–733. https://doi.org/10.1111/j.1365-246X.2004.02450.x. Christova C.V., 2015. Spatial Distribution of the Contemporary Stress Field in the Kurile Wadati-Benioff Zone by Inversion of Earthquake Focal Mechanisms. Journal of Geodynamics 83, 1–17. https://doi.org/10.1016/j.jog.2014.11.001. Christova C., Hirata N., Kato A., 2006. Contemporary Stress Field in the Wadati-Benioff Zone at the Japan-Kurile Arc-Arc Junction (North Honshu, the Hokkaido Corner and Hokkaido Island) by Inversion of Earthquake Focal Mechanisms. Bulletin of the Earthquake Research Institute 81, 1–18. Christova C., Tsapanos T., 2000. Depth Distribution of Stresses in the Hokkaido Wadati-Benioff Zone as Deduced by Inversion of Earthquake Focal Mechanisms. Journal of Geodynamics 30 (5), 557–573. https://doi.org/10.1016/S0264-3707(00)00009-0. Faccenda M., Gerya T.V., Mancktelow N.S., Moresi L., 2012. Fluid Flow during Slab Unbending and Dehydration: Implications for Intermediate‐Depth Seismicity, Slab Weakening and Deep Water Recycling. Geochemistry, Geophysics, Geosystems 13 (1). https://doi.org/10.1029/2011GC003860. Fujita K., Kanamori H., 1981. Double Seismic Zones and Stresses of Intermediate Depth Earthquakes. Geophysical Journal International 66 (1), 131–156. https://doi.org/10.1111/j.1365-246X.1981.tb05950.x. Gephart J.W., Forsyth D.W., 1984. An Improved Method for Determining the Regional Stress Tensor Using Earthquake Focal Mechanism Data: Application to the San Fernando Earthquake Sequence. Journal of Geophysical Research: Solid Earth 89 (B11), 9305–9320. https://doi.org/10.1029/JB089iB11p09305. Ghimire S., Kasahara M., 2009. Spatial Variation in Seismotectonics and Stress Conditions across the Kurile and Japan Trenches Inferred from the Analysis of Focal Mechanism Data in Hokkaido, Northern Japan. Journal of Geodynamics 47 (2–3), 153–166. https://doi.org/10.1016/j.jog.2008.07.007. Global CMT Catalog, 2020. Available from: https://www.globalcmt.org/CMTsearch.html (Last accessed November 16, 2020). Hasegawa A., Umino N., Takagi A., 1978. Double-Planed Structure of the Deep Seismic Zone in the Northeastern Japan Arc. Tectonophysics 47 (1–2), 43–58. https://doi.org/10.1016/0040-1951(78)90150-6. Hayes G.P., Moore G.L., Portner D.E., Hearne M., Flamme H., Furtney M., Smoczyk G.M., 2018. 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Doklady Earth Sciences 440, 1410–1412. https://doi.org/10.1134/S1028334X11100096. https://www.gt-crust.ru/jour/article/view/1374 doi:10.5800/GT-2021-12-4-0564 Authors who publish with this Online Publication agree to the following terms:Authors retain copyright and grant the Online Publication right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this Online Publication.Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the Online Publication's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this Online Publication.Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access). 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Geodynamics & Tectonophysics; Том 12, № 4 (2021); 929-950 Геодинамика и тектонофизика; Том 12, № 4 (2021); 929-950 2078-502X промежуточные глубины double seismic focal zone tectonic stress field slab intermediate depth двойная сейсмофокальная зона поле тектонических напряжений слэб info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2021 ftjgat https://doi.org/10.5800/GT-2021-12-4-056410.1016/j.softx.2019.03.00810.1016/0031-9201(88)90138-010.1111/j.1365-246X.2004.02450.x10.1016/j.jog.2014.11.00110.1016/S0264-3707(00)00009-010.1029/2011GC00386010.1111/j.1365-246X.1981.tb05950.x10.1029/JB089iB11p0 2024-07-05T03:17:07Z The study has been done on the orientation of the principal axes of tectonic stress field at intermediate depths of earthquakes of the southern flank of the Kuril-Kamchatka subduction system separately for the upper and lower double seismic focal zones. Use has been made of the NIED and GlobalCMT catalogue data. The computation-based results are presented on schemes of the stressed state of the investigated areas and in tables. In the context of the southern Kuril Islands, evidence has been provided for predominance of the maximum compressive stresses along the slab plane in the upper layer and minimal compressive stresses (deviation extension) in the lower layer. However, the principal axes of maximum and minimum compression are displaced in direction relative to the slab dip: by 30–40° counterclockwise for the compression axis in the upper layer, which coincides with the direction of plate movement, and clockwise for the extension axis in the lower layer. This might be caused by the right-lateral strike-slip component of the Pacific Plate subduction. Unlike the general trend, the orientation of the principal axes of the stress field beneath the central Hokkaido-related segments in the upper layer is almost identical to that in the lower layer. There have also been found the segments exposed to shear stress, with the most extensive located opposite the northern Kunashir Island and beneath the southern Hokkaido Island. The results obtained for major large groups of clusters show good accordance with those published by other authors. The discrepancies relate primarily to small groups of isolated clusters showing local stress field heterogeneities. Исследовано поле ориентаций осей главных тектонических напряжений на участке промежуточных глубин землетрясений южного фланга Курило-Камчатской субдукционной системы отдельно для верхнего и нижнего слоя двойной сейсмофокальной зоны. Привлечены данные каталогов NIED и GlobalCMT. Результаты расчетов представлены в виде схем напряженного состояния изучаемых областей и ... Article in Journal/Newspaper Kamchatka Geodynamics & Tectonophysics

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