KAHRAMANMARASH EARTHQUAKES IN TURKEY: SEISMIC MOTION ALONG CONJUGATED FAULTS

S. A. Tikhotsky; Тихоцкий С. А.; R. E. Tatevosyan; Татевосян Р. Э.; Yu. L. Rebetsky; Ребецкий Ю. Л.; A. N. Ovsyuchenko; Овсюченко А. Н.; A. S. Larkov; Ларьков А. С.

doi:10.31857/S2686739723600765

KAHRAMANMARASH EARTHQUAKES IN TURKEY: SEISMIC MOTION ALONG CONJUGATED FAULTS

Authors: Tikhotsky S.A.¹, Tatevosyan R.E.¹, Rebetsky Y.L.¹, Ovsyuchenko A.N.¹, Larkov A.S.¹
Affiliations:
1. Schmidt Institute of Physics of the Earth, Russian Academy of Sciences
Issue: Vol 511, No 2 (2023)
Pages: 228-235
Section: SEISMOLOGY
Submitted: 30.01.2025
Published: 01.08.2023
URL: https://vestnik.nvsu.ru/2686-7397/article/view/649855
DOI: https://doi.org/10.31857/S2686739723600765
EDN: https://elibrary.ru/WGONHT
ID: 649855

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Abstract

Earthquakes in Turkey (Karamanmarash province) in February 2023 do not fit into the usual sequence: the main shock is aftershocks. According to Botha’s statistical law [1], the magnitude of the strongest aftershock is expected to be one less than the magnitude of the main shock. Meanwhile, for the aftershock sequence in Turkey, this difference is only 0.1. In Turkish publications, the first of the strongest earthquakes is called Pazardzhik (Mw = 7.8), and the second – Elbistan (Mw = 7.7) [2, 3]. Each of these earthquakes generated its own system of surface ruptures and aftershock sequences differently oriented in space. The purpose of the study is to assess whether the occurrence of the second earthquake is due to the stress field that existed earlier, or whether it arose as a result of the main shock. If the second scenario is implemented, this means that the stress field can change in the vicinity of a strong earthquake almost instantly (the time difference between earthquakes is less than 9 hours).

Keywords

earthquake, seismic source, seismology, tectonophysics, seismotectonics, active faults, Turkey, Karamanmarash

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