On the influence of the 2021 Khubsugul earthquake on the seismicity of the joint of the Altai-Sayan Mountain region with the Baikal rift zone
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| 1. | Title | Title of document | On the influence of the 2021 Khubsugul earthquake on the seismicity of the joint of the Altai-Sayan Mountain region with the Baikal rift zone |
| 2. | Creator | Author's name, affiliation, country | A. F. Emanov; Federal Research Center “Unified Geophysical Service of the Russian Academy of Sciences”; Russian Federation |
| 2. | Creator | Author's name, affiliation, country | A. A. Emanov; Federal Research Center “Unified Geophysical Service of the Russian Academy of Sciences”; Russian Federation |
| 2. | Creator | Author's name, affiliation, country | V. V. Chechelnitsky; Federal Research Center “Unified Geophysical Service Russian Academy of Sciences”; Russian Federation |
| 2. | Creator | Author's name, affiliation, country | E. V. Shevkunova; Federal Research Center “Unified Geophysical Service of the Russian Academy of Sciences”; Russian Federation |
| 2. | Creator | Author's name, affiliation, country | A. V. Fateev; Federal Research Center “Unified Geophysical Service of the Russian Academy of Sciences”; Trofimuk Institute of Petroleum Geology and Geophysics of the Siberian Branch of the Russian Academy of Sciences; Russian Federation |
| 2. | Creator | Author's name, affiliation, country | E. A. Kobeleva; Federal Research Center “Unified Geophysical Service Russian Academy of Sciences”; Russian Federation |
| 2. | Creator | Author's name, affiliation, country | P. O. Polyansky; Federal Research Center “Unified Geophysical Service of the Russian Academy of Sciences”; Russian Federation |
| 2. | Creator | Author's name, affiliation, country | М. V. Frolov; Federal Research Center “Unified Geophysical Service of the Russian Academy of Sciences”; Russian Federation |
| 2. | Creator | Author's name, affiliation, country | I. F. Eshkunova; Federal Research Center “Unified Geophysical Service of the Russian Academy of Sciences”; Russian Federation |
| 3. | Subject | Discipline(s) | |
| 3. | Subject | Keyword(s) | Tuvan-Mongolian block; major earthquakes; aftershocks; Khubsugul earthquake |
| 4. | Description | Abstract | The question of the influence of the large Khubsugul earthquake of 2021, ML = 6.9 on the seismicity of the block structure of the junction of the Altai-Sayan Mountain region and the Baikal rift zone is considered. The research is carried out using data from networks of seismological stations of the Altai-Sayan and Baikal branches of the Unified Geophysical Service of the Russian Academy of Sciences, as well as seismological stations of Mongolia. The development of the seismic process near the boundaries of the Tuva-Mongolian block and adjacent blocks of Eastern Tuva is shown. The focal zone of the Darkhad earthquake swarm, which formed in 2022–2023, has been established and studied. in the form of several series of events, the strongest of which had a magnitude of ML >5. Simultaneously with the activation of the focal area of the Khuvsgul earthquake, high seismic activity of the focal areas of large earthquakes of past years is observed: Busingolsky 1991, Tuva 2011–2012. Belin-Biy-Khemsky 2008. The impact of the Khubsugul earthquake on the seismicity of the boundary blocks of the Altai-Sayan and Baikal zones differs from the impact of the Chuya earthquake of 2003 on the seismicity of Altai. |
| 5. | Publisher | Organizing agency, location | The Russian Academy of Sciences |
| 6. | Contributor | Sponsor(s) |
Ministry of Science and Higher Education of the Russian Federation (075-00682-24) Ministry of Science and Higher Education of the Russian Federation (FWZZ-2022-0021) |
| 7. | Date | (DD-MM-YYYY) | 18.12.2024 |
| 8. | Type | Status & genre | Peer-reviewed Article |
| 8. | Type | Type | Research Article |
| 9. | Format | File format | |
| 10. | Identifier | Uniform Resource Identifier | https://journals.eco-vector.com/0203-0306/article/view/685206 |
| 10. | Identifier | Digital Object Identifier (DOI) | 10.31857/S0203030624060047 |
| 10. | Identifier | eLIBRARY Document Number (EDN) | HZCUUI |
| 10. | Identifier | Digital Object Identifier (DOI) (PDF (Rus)) | 10.31857/S0203-03062024628-39-200070 |
| 11. | Source | Title; vol., no. (year) | Вулканология и сейсмология; No 6 (2024) |
| 12. | Language | English=en | ru |
| 13. | Relation | Supp. Files |
Fig. 1. Earthquake density maps in the epicentral region of the Khuvsgul earthquake for 2021, 2022 and 2023 (a, b and c, respectively). Sites with one earthquake are not shown. (205KB) doi: 10.31857/S0203-03062024628-39-4346411 Fig. 2. Map of epicenters of the Altai-Sayan mountain region in 2023. Inset – the area of the Khubsugul earthquake. (36KB) doi: 10.31857/S0203-03062024628-39-4346412 Fig. 3. Earthquake map of the western edge of the Baikal rift zone in 1963–2023. The Darkhad earthquake swarm is shown in red. (119KB) doi: 10.31857/S0203-03062024628-39-4346413 Fig. 4. Development of the seismic process in the elements of the block structure of the Tuva-Mongolian block after the 2021 Khubsugul earthquake. A – epicentral zone of the 2021 Khubsugul earthquake; B – Darkhad earthquake swarm; C – epicentral zone of the 2008 Belin-Biy-Khem earthquake; G – epicentral zone of the 1991 Busingol earthquake; D – epicentral zone of the 2011–2012 Tuva earthquakes. (49KB) doi: 10.31857/S0203-03062024628-39-4346414 Fig. 5. Map of total seismic energy for the block structure of Eastern Tuva and Western Baikal region for 1905–2023. (39KB) doi: 10.31857/S0203-03062024628-39-4346415 Fig. 6. Map of earthquake epicenters in Eastern Tuva and Western Baikal in 2023. (119KB) doi: 10.31857/S0203-03062024628-39-4346416 Fig. 7. Development of the seismic process in the source of the Busingol earthquake of 1991. a — map of earthquake epicenters in the Busingol earthquake region; b — spatiotemporal development of the aftershock process along the feathering fault. The events are shifted to the central line of the rectangle (see Fig. 7a) along the perpendicular from the entire area of the rectangle. (112KB) doi: 10.31857/S0203-03062024628-39-4346417 Fig. 8. Epicenters of earthquakes in the Belino-Busingol zone with KR ≥8 for the period 1963–2007 and the Belin-Biy-Khem earthquake of August 16, 2008. 1 – KR energy class; 2 – fault (according to GIN RAS, edited by Yu.G. Leonov); 3 – strike-slip faults (according to [Kochetkov et al., 1993]); 4 – normal faults (according to [Parfeevets, Sankov, 2006]); 5 – state border; 6 – epicenter of the Belin-Biy-Khem earthquake of 2008; 7 – epicenter of the Busingol earthquake of 1991. (56KB) doi: 10.31857/S0203-03062024628-39-4346418 Fig. 9. Development of the seismic process in the focal area of the Busingol earthquake of 1991 from 1991 to 2023. (48KB) doi: 10.31857/S0203-03062024628-39-4346419 Fig. 10. Density map of Tuva earthquake aftershock epicenters. The aftershock studies were performed using data from a temporary local network of stations [Emanov et al., 2014, 2018]. Thanks to this, accurate information on the parameters of seismic events was obtained, and tens of thousands of aftershocks with ML ≥–0.8 were recorded and processed. (24KB) doi: 10.31857/S0203-03062024628-39-4346420 |
| 14. | Coverage | Geo-spatial location, chronological period, research sample (gender, age, etc.) | |
| 15. | Rights | Copyright and permissions |
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