The tectonic conditions of the August 2, 2007, M ∼ 6.1 Nevelsk earthquake

  • V. L. Lomtev
  • M. G. Gurinov
Article

Abstract

This paper reports the results of field observation and the study of coastal tectonic deformations related to the Nevelsk tsunamigenic earthquake (August 2, 2007, M ∼ 6.1) obtained in August-September of 2007. The earthquake caused a 0.5- to 1.5-m rise of and partial desiccation of the southern, central, and northern benches and the formation of longitudinal structural ridges seaward of Lovetskaya Bay. In the framework of the new model of the Kamyshovy (West Sakhalin) Anticlinorum as a structure of the Quaternary and Middle Quaternary crustal detachment, the relationships between the earthquake and the slow gravitational creep of the upper crust on its western slope with local squeezing of the Middle Miocene Nevelsk siltstones are discussed.

Key words

crustal detachment anticlinorium earthquake creep tectonic pair shelf southern Sakhalin 

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Copyright information

© Pleiades Publishing, Ltd. 2009

Authors and Affiliations

  • V. L. Lomtev
    • 1
  • M. G. Gurinov
    • 1
  1. 1.Institute of Marine Geology and Geophysics Far East DivisionRussian Academy of SciencesYuzhno-SakhalinskRussia

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