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Dynamics of the Zones of Strong Earthquake Epicenters in the Arctic–Asian Seismic Belt

1
Institute of the Earth’s Crust SB RAS, 128 Lermontov Street, Irkutsk 664033, Russia
2
Academy of Sciences of the Sakha Republic (Yakutia), pr. Lenina, 33, Yakutsk 677007, Russia
3
Institute of Geology of Diamonds and Precious Metals SB RAS, 39 Lenin Prospect, Yakutsk 677077, Russia
*
Author to whom correspondence should be addressed.
Geosciences 2019, 9(4), 168; https://doi.org/10.3390/geosciences9040168
Received: 28 February 2019 / Revised: 27 March 2019 / Accepted: 9 April 2019 / Published: 12 April 2019
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Abstract

Our comprehensive study of the Russian Arctic region aims to clarify the features and types of seismotectonic deformation of the crust in the Arctic–Asian Seismic Belt, specifically in the zones of strong earthquakes in the Laptev Sea Segment, the Kharaulakh Segment, and the Chersky Seismotectonic Zone. We have analyzed modern tectonic structures and active fault systems, as well as tectonic stress fields reconstructed by tectonophysical analysis of the Late Cenozoic faults and folds. The investigated neotectonic structures are ranked with respect to the regional classification principles. Changes in the crustal stress–strain state in the lithospheric plate boundaries between the Eurasian, North American, and Okhotsk Sea Plates are analyzed, and regularities of such changes are discovered. A set of models has been constructed for the studied segments of plate boundaries with account of the dynamics of the regional geological structures. The models can give a framework for the assessment of potential seismic risks of seismogenerating structures in the Russian Arctic region. View Full-Text
Keywords: Arctic–Asian seismic belt; regional segment; active fault; paleoseismogenic structure; Late Cenozoic deformation; earthquake mechanism; seismotectonic deformation; potential seismicity Arctic–Asian seismic belt; regional segment; active fault; paleoseismogenic structure; Late Cenozoic deformation; earthquake mechanism; seismotectonic deformation; potential seismicity
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Imaeva, L.P.; Imaev, V.S.; Koz’min, B.M. Dynamics of the Zones of Strong Earthquake Epicenters in the Arctic–Asian Seismic Belt. Geosciences 2019, 9, 168.

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