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Migration of sources of small earthquakes in the Garm region and variations in velocity of the Earth’s rotation

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Abstract

The spatial-temporal variations in localization of the sources of earthquakes with H ≥ 14 km are reviewed for the Garm region. The uneven distribution of such earthquakes is related to the block structure: their amount is higher in the weakened zones rather than in blocks. Three weakened zones are characterized by higher activity of deepened seismicity, which varies in time and increases before the earthquakes with K ≥ 12.5. The temporal variations in distribution of earthquake sources with depth allow a suggestion of the relation of the velocity of the Earth’s rotation and activity of deepened seismicity.

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Authors and Affiliations

  1. Schmidt Institute of Physics of the Earth, ul. Bol’shaya Gruzinskaya 10/1, Moscow, 123995, Russia

    O. I. Aptikaeva

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  1. O. I. Aptikaeva
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Correspondence to O. I. Aptikaeva.

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Original Russian Text © O.I. Aptikaeva, 2013, published in Voprosy Ingenernoy Seismologii, 2013, Vol. 40, No. 3, pp. 54–63.

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Aptikaeva, O.I. Migration of sources of small earthquakes in the Garm region and variations in velocity of the Earth’s rotation. Seism. Instr. 50, 269–277 (2014). https://doi.org/10.3103/S0747923914040033

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  • DOI: https://doi.org/10.3103/S0747923914040033

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