Spatiotemporal dynamics of seismicity in the Tuva-Mongolian block
https://doi.org/10.18303/2619-1563-2026-1-39
Abstract
This study examines the features of the seismic regime of the Tuva-Mongolian block, located at the junction of the Altai-Sayan mountain region and the Baikal Rift Zone. The distribution of earthquake hypocenters within the block and adjacent territories (East Tuva Upland, Hangai Massif) is analyzed. Differences in seismicity types of neighboring structures and the influence of plume processes on the modern seismic activity of the region are discussed.
Supporting agencies: the study was carried out within the framework of the state assignment (project No. 075-00609-26) and using data obtained at unique scientific facility “Seismic infrasound complex for monitoring the Arctic cryolithozone and complex for continuous seismic monitoring of the Russian Federation, adjacent territories and the world”.
About the Authors
A. A. Emanov
Altai-Sayan Branch of the Federal Research Center, Unified Geophysical Survey, RAS; Trofimuk Institute of Petroleum Geology and Geophysics, SB RAS
Russian Federation
Russian Federation
Alexey A. Emanov
Koptyug Ave., 3, Novosibirsk, 630090
A. F. Emanov
Altai-Sayan Branch of the Federal Research Center, Unified Geophysical Survey, RAS
Russian Federation
Russian Federation
Alexandr F. Emanov
Koptyug Ave., 3, Novosibirsk, 630090
E. A. Gladyshev
Altai-Sayan Branch of the Federal Research Center, Unified Geophysical Survey, RAS
Russian Federation
Russian Federation
Egor A. Gladyshev
Koptyug Ave., 3, Novosibirsk, 630090
I. F. Eshkunova
Altai-Sayan Branch of the Federal Research Center, Unified Geophysical Survey, RAS
Russian Federation
Russian Federation
Irina F. Eshkunova
Koptyug Ave., 3, Novosibirsk, 630090
References
1. Chorowicz J. The East African rift system // Journal of African Earth Sciences. 2005. Vol. 43 (1–3). P. 379–410. doi:10.1016/j.jafrearsci.2005.07.019.
2. Demberel S. Seismicity and stress-strain state of the lithosphere of Mongolia. Dissertation for the degree of Doctor of Geological and Mineralogical Sciences (In Russ.). Institute of the Earth's Crust, Siberian Branch of the Russian Academy of Sciences, Irkutsk, 2017. 374 p.
3. Emanov A.A., Eshkunova I.F. Automation of processing large volumes of seismological data in studying the seismicity of the Khubsugul region for 2014–2016 // Izvestiya, Physics of the Solid Earth. 2025. Vol. 61 (6). P. 938–950. doi:10.1134/S1069351325700806. EDN:MJFKGQ.
4. Emanov A.F., Emanov A.A., Chechel’nitskii V.V., Shevkunova E.V., Radziminovich Ya.B., Fateev A.V., Kobeleva E.A., Gladyshev E.A., Arapov V.V., Artemova A.I., Podkorytova V.G. The Khuvsgul earthquake of January 12, 2021, MW = 6.7, ML = 6.9 and early aftershocks // Izvestiya, Physics of the Solid Earth. 2022. Vol. 58 (1). P. 59–73. doi:10.1134/S1069351322100019. EDN:EHDBHU.
5. Emanov A.F., Emanov A.A., Chechel’nitskii V.V., Shevkunova E.V., Fateev A.V., Kobeleva E.A., Arapov V.V., Frolov M.V. The Khuvsgul earthquake of January 12, 2021, ML = 6.9, in the seismicity structure of the Tuva–Mongolian block // Izvestiya, Physics of the Solid Earth. 2023. Vol. 59 (5). P. 733–748. doi: 10.1134/s1069351323050038. EDN:KYKKMY.
6. Emanov A.F., Emanov A.A., Chechelnitsky V.V., Shevkunova E.V., Fateev A.V., Kobeleva E.A., Polyansky P.O., Frolov M.V., Eshkunova I.F. On the influence of the 2021 Hubsugul earthquake on the seismicity of the junction of the Altai-Sayan mountain region with the Baikal Rift Zone // Journal of Volcanology and Seismology. 2024. Vol. 18 (6). P. 532–543. doi:10.1134/S0742046324700817. EDN:HALNGH.
7. Kochetkov V.M., Khilko S.D., Zorin Yu.A., Ruzhich V.V., Turutanov E.Kh., Arvisbaagar N., Bayasgalan, Kozhevnikov V.M., Erdenbelag B., Chipizubov A.V., Monkhoo D., Anikanova G.A., Klyuchevskii A.V., Naidich V.I., Bayar G., Borovik N.S., Gileva N.A., Adya M., Balzhinnyam I., Dzhurik V.I., Potapov V.A., Yushkin V.I., Dugurmaa T., Tsembel L. Seismotectonics and seismicity of the Khubsugul region (In Russ.). Nauka, Novosibirsk, 1993. 182 p.
8. Meltzer A., Stachnik J.C., Sodnomsambuu D., Munkhuu U., Tsagaan B., Dashdondog M., Russo R. The Central Mongolia seismic experiment: multiple applications of temporary broadband seismic arrays // Seismological Research Letters. 2019. Vol. 90 (3). P. 1364–1376. doi:10.1785/0220180360.
9. Misharina L.A., Melnikova V.I., Balzhinnyam I. The southwestern boundary of the Baikal Rift Zone based on earthquake focal mechanism data // Journal of Volcanology and Seismology. 1983. No. 2. P. 74–83. (In Russ.).
10. Molnar P., Kurushin R.A., Kochetkov V.M., Demyanovich M.G., Borisov B.A., Vashilov Yu.Ya. Deformation and faulting during strong earthquakes in the Mongolian-Siberian region // Deep Structure and Geodynamics of the Mongolian-Siberian Region (In Russ.). Nauka, Novosibirsk, 1995. P. 5–55.
11. Parfeevets A.V., Sankov V.A. Stress state of the Earth's crust and geodynamics of the southwestern part of the Baikal Rift system (In Russ.). GEO, Novosibirsk, 2006. 151 p.
12. San’kov V.A., Lukhnev A.V., Miroshnichenko A.I., Levi K.G., Ashurkov S.V., Bashkuev Yu.B., Dembelov M.G., Calais E., Déverchère J., Vergnolle M., Bechtur B., Amarjargal Ch. Present-day movements of the Earth’s crust in the Mongol-Siberian region inferred from GPS geodetic data // Doklady Earth Sciences. 2003. Vol. 393 (8). P. 1082–1085. EDN:LIDCAF.
13. Shelly D.R., Hill D.P., Massin F., Farrell J., Smith R.B., Taira T. A fluid-driven earthquake swarm on the margin of the Yellowstone caldera // Journal of Geophysical Research: Solid Earth. 2013. Vol. 118 (9). P. 4872–4886. doi:10.1002/jgrb.50362.
14. Zelenin E.A., Bachmanov D.M., Garipova S.T., Trifonov V.G., Kozhurin A.I. The Active Faults of Eurasia Database (AFEAD): the ontology and design behind the continental-scale dataset // Earth System Science Data. 2022. Vol. 14. P. 4489–4503. doi:10.5194/essd-14-4489-2022.
15. Zorin Yu.A., Turutanov E.Kh., Kozhevnikov V.M., Rasskazov S.V., Ivanov A.I. The nature of Cenozoic upper mantle plumes in East Siberia (Russia) and Central Mongolia // Russian Geology and Geophysics. 2006. Vol. 47 (10). P. 1056–1070.
Review
For citations:
Emanov A.A., Emanov A.F., Gladyshev E.A., Eshkunova I.F. Spatiotemporal dynamics of seismicity in the Tuva-Mongolian block. Russian Journal of Geophysical Technologies. 2026;(1):39-47. (In Russ.) https://doi.org/10.18303/2619-1563-2026-1-39
Views:
80
JATS XML
Email this article 