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Faults and Source Parameters of Earthquakes in the Baikal Rift Zone: Dip Angles of Fault Planes

Authors
  • Dem’yanovich, V. M.1
  • Klyuchevskii, A. V.1
  • 1 Russian Academy of Sciences, Institute of the Earth’s Crust, Siberian Branch, Irkutsk, 664033, Russia , Irkutsk (Russia)
Type
Published Article
Journal
Doklady Earth Sciences
Publisher
Pleiades Publishing
Publication Date
Apr 01, 2018
Volume
479
Issue
2
Pages
433–438
Identifiers
DOI: 10.1134/S1028334X18040128
Source
Springer Nature
License
Yellow

Abstract

Analysis of gentle, intermediate, and steep dip angles of fault planes in earthquake sources of the Baikal region is carried out with the slips in seismic sources being taken into account. The areas where normal faulting slips at steep, intermediate, and gentle angles took place are distinguished, and this can be interpreted as transformation of a steep dip to gentle one. It is found that the increase in energy class is accompanied by the number of earthquakes with steep dip angles, whereas the proportion of earthquakes with intermediate angles decreases, and the fraction of earthquakes with gentle angles remains quasi-stable and small.

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