Interdisciplinary dating of Utrish seismic dislocations: to localization of the source of a strong historical earthquake in the Western Caucasus

A.N. Ovsyuchenko1, A.M. Novichikhin2, O.N. Bykhalova3, E.A. Rogozhin1, A.M. Korzhenkov1, A.S. Larkov1, Yu.V. Butanaev4, R.N. Lukashova1

1 Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia

2 Anapa Archaeological Museum, Anapa, Russia

3 Utrish State Reserve, Anapa, Russia

4 Tuva Institute for the Integrated Development of Natural Resources, Siberian Branch of Russian Academy of Sciences, Kyzyl, Russia

Corresponding author: A.N. Ovsyuchenko, e-mail: ovs@ifz.ru

Abstract. Based on the results of paleoseismological, archaeological and dendrochronological researches and published data, the date of the last generation of Utrish seismic dislocations, one of the key objects in the seismic hazard studies of the Western Caucasus, was obtained. According to previously obtained and newly collected data, a catastrophic earthquake occurred in the XII–XIII centuries. According to data on seismic ruptures, the lower limit of magnitude is MW ≈ 6.9. The source is located in the Utrish Fault zone, which follows the coast of the Abrau Peninsula, the seismic generating role of which is established over the entire set of data.

Keywords: seismotectonics, paleoseismology, archeoseismology, dendrochronology, toponymy, active faults, long-term seismic regime, Western Caucasus, Anapa, Novorossiysk

About the authors:

OVSYUCHENKO Alexander Nikolaevich – Candidate of Geological and Mineralogical Sciences, Head of Laboratory, Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences. Russia, 123242, Moscow, ul. Bolshaya Gruzinskaya, 10, building 1. E-mail: ovs@ifz.ru

NOVICHIKHIN Andrey Mikhailovich – Candidate of Historical Sciences, Senior Researcher, Anapa Archaeological Museum. Russia, 353440, Krasnodar region, Anapa, Naberezhnaya str., 4. E-mail: yazamat03@mail.ru

BYKHALOVA Olga Nikolaevna – Deputy Director, Head of Department, Federal State Budgetary Institution “Utrish State Reserve”. Russia, 353445, Krasnodar region, Anapa, Severnaya Str., 41v, apt. 2. E-mail: bykhalovao@mail.ru

ROGOZHIN Evgeny Aleksandrovich − Professor, Doctor of Geological and Mineralogical Sciences, Head of Department, Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences. Russia, 123242, Moscow, ul. Bolshaya Gruzinskaya, 10, building 1. E-mail: eurog1947@yandex.ru

KORZHENKOV Andrey Mikhailovich – Doctor of Geological and Mineralogical Sciences, Head of Laboratory, Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences. Russia, 123242, Moscow, ul. Bolshaya Gruzinskaya, 10, building 1. E-mail: korzhenkov@ifz.ru

LARKOV Alexander Sergeevich – Research Fellow, Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences. Russia, 123242, Moscow, ul. Bolshaya Gruzinskaya, 10, building 1. E-mail: las119@yandex.ru

BUTANAEV Yuri Vladimirovich – Research Fellow, Tuva Institute for the Integrated Development of Natural Resources of Siberian Branch of the Russian Academy of Sciences. Russia, 667007, Kyzyl, Internatsionalnaya str., 117a. E-mail: jyra3@mail.ru

LUKASHOVA Raisa Nikolaevna – Research Fellow, Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences. Russia, 123242, Moscow, ul. Bolshaya Gruzinskaya, 10, building 1. E-mail: lur@ifz.ru

Cite this article as: Ovsyuchenko A.N., Novichikhin A.M., Bykhalova O.N., Rogozhin E.A., Korzhenkov A.M., Larkov A.S., Butanaev Yu.V., Lukashova R.N. Interdisciplinary dating of Utrish seismic dislocations: to localization of the source of a strong historical earthquake in the Western Caucasus, Voprosy Inzhenernoi Seismologii (Problems of Engineering Seismology). 2019. V. 46, No. 3. P. 50–73. [in Russian]. https://doi.org/10.21455/VIS2019.3-4

English translation of the article will be published in Seismic Instruments, ISSN: 0747-9239 (Print) 1934-7871 (Online), https://link.springer.com/journal/11990