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Once More about Deep Caucasus Earthquakes

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Abstract

The upper crustal location of the foci of the Spitak earthquake of December 7, 1988, and its aftershocks is proved. It is demonstrated that the seismological network in Armenia and Georgia allowed unequivocal focal depth identification based on the kinematic data. The waveforms of all the Spitak earthquakes are typical of sources in the upper crust. It is noted that up to now, mantle earthquakes in the Caucasus have only been revealed in the Terek–Sunzha depression.

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Authors and Affiliations

  1. Geophysical Survey, Russian Academy of Sciences, Obninsk, 249035, Russia

    A. A. Godzikovskaya

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  1. A. A. Godzikovskaya
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Correspondence to A. A. Godzikovskaya.

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Original Russian Text © A.A. Godzikovskaya, 2017, published in Voprosy Inzhenernoi Seismologii, 2017, Vol. 44, No. 3, pp. 41–56.

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Godzikovskaya, A.A. Once More about Deep Caucasus Earthquakes. Seism. Instr. 54, 327–339 (2018). https://doi.org/10.3103/S0747923918030106

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