Results of local seismological monitoring in the Lena delta region
https://doi.org/10.18303/2619-1563-2022-1-76
Abstract
Refinement of the geodynamic situation in the area of the Lena River delta is relevant for understanding local geological processes. Previously, source seismology for this area was provided only by remote regional seismic stations. This paper shows the results of processing data from detailed seismological observations for 2018–2021. The distribution of earthquake hypocenters and their focal mechanisms are presented. The results of processing largely confirm the a priori geological data and do not contradict the results of regional observations. The accumulation of earthquakes in the area of the Kharaulakh Range most likely refers to the Primorsky Fault, which extends along the coast of the Bykovskaya channel. According to geological studies, the Primorsky Fault is a fault, which is confirmed by the focal mechanisms of earthquake sources in this area.
About the Authors
S. N. Ponasenko
Novosibirsk State University
Russian Federation
Russian Federation
630090, Novosibirsk, Pirogov st., 2
P. A. Dergach
http://www.ipgg.sbras.ru/ru/institute/staff/dergachpa
Trofimuk Institute of Petroleum Geology and Geophysics SB RAS Novosibirsk State University
Russian Federation
Trofimuk Institute of Petroleum Geology and Geophysics SB RAS Novosibirsk State University
Russian Federation
Koptyug Ave., 3, Novosibirsk, 630090
S. V. Yaskevich
http://www.ipgg.sbras.ru/ru/institute/staff/yaskevichsv
Trofimuk Institute of Petroleum Geology and Geophysics SB RAS Novosibirsk State University Institute of the Earth’s Crust SB RAS
Russian Federation
Trofimuk Institute of Petroleum Geology and Geophysics SB RAS Novosibirsk State University Institute of the Earth’s Crust SB RAS
Russian Federation
Koptyug Ave., 3, Novosibirsk, 630090
A. A. Duchkov
http://www.ipgg.sbras.ru/ru/institute/staff/duchkovaa
Trofimuk Institute of Petroleum Geology and Geophysics SB RAS Novosibirsk State University
Russian Federation
Trofimuk Institute of Petroleum Geology and Geophysics SB RAS Novosibirsk State University
Russian Federation
Koptyug Ave., 3, Novosibirsk, 630090
References
1. Dergach P.A., Eponeshnikova L.Y., Ponasenko S.N., Kartoziya A.A., Gaisler V.K., Duchkov A.A., Shibaev S.V., Zobnin G.Y. Building a seismic tomographic model for the area of the Samoilovsky Island research station olbased on local seismological monitoring data for 2019–2021 // Geodynamics and Tectonophysics. – 2022. – Vol. 13 (2). – Article 0627, doi: 10.5800/GT-2022-13-2s-0627.
2. Droznin D.V., Droznina S.Ya. Interactive DIMAS program for processing seismic signal // Seismic Instruments. – 2011. – Vol. 47 (3). – P. 215–224, doi: 10.3103/S0747923911030054.
3. Geissler V.K., Baranov B.V., Shibaev S.V., Haberland K., Tsukanov N.V., Dozorova K.A. Russian-German project "Seismicity and neotectonics of the Laptev Sea region" // Vestnik KRAUNTs. Series: Earth Sciences. – 2018. – Vol. 1. – P. 102–106.
4. Grachev A.F., Demenitskaya R.M., Karasik A.M. Problems of connection between the Momsky continental rift and the structure of the Gakkel mid-ocean ridge // Geophysical methods of exploration in the Arctic. – NIIGA, Leningrad, 1973. – Vol. 8. – P. 56–75.
5. Imaev V.S., Imaeva L.P., Smekalin O.P., Chipizubov A.V., Ovsyuchenko A.N., Kolodeznikov I.I. Neotectonics of the Kharaulakh sector of the Laptev Sea // Russian Geology and Geophysics. – 2018. – Vol. 59 (7). – P. 813–826, doi: 10.1016/j.rgg.2018.07.007.
6. Imaeva L.P., Gusev G.S., Imaev V.S. Relief dynamics and seismotectonic activation of the newest structures in the delta of the river Lena // Geotectonics. – 2019. – Vol. 5. – P. 62–77.
7. Stiller H., Hurtig E., Franck S. Some problems of complex interpretation of geophysical fields in Europe // International Geological Congress. – 1984. – Vol. 27.
8. Vernikovsky V.A., Dobretsov N.L., Metelkin D.V., Matushkin N.Yu., Kulakov I.Yu. Concerning tectonics and the tectonic evolution of the Arctic // Russian Geology and Geophysics. – 2013. – Vol. 54 (8). – P. 838–858, doi: 10.1016/j.rgg.2013.07.006.
Review
For citations:
Ponasenko S.N., Dergach P.A., Yaskevich S.V., Duchkov A.A. Results of local seismological monitoring in the Lena delta region. Russian Journal of Geophysical Technologies. 2022;(1):76-87. (In Russ.) https://doi.org/10.18303/2619-1563-2022-1-76
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