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The Komandor seismic gap: Earthquake prediction and tsunami computation

  • Marine Geology
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Oceanology Aims and scope

Abstract

The “seismic silence” period in the seismic gap in the region of the Komandor Islands (hereinafter, the Komandor seismic gap) is close to the duration of the maximal recurrence interval for the strongest earthquakes of the Aleutian Islands. This indicates the possibility of a strong earthquake occurring here in the nearest time. In the present work, the results of simulation for a tsunami from such an earthquake are presented. The scheme successfully used by the authors for the nearest analog—the 2004 Sumatra-Andaman earthquake—is applied. The magnitude of the supposed earthquake is assumed to be 9.0; the tsunamigenic source is about 650 km long and consists of 9 blocks. The parameters of the tsunami propagation in the Pacific Ocean and the characteristics of the waves on the coasts are computed for several possible scenarios of blocks’ motion. The spectral analysis of the obtained wave characteristics is made and the effects of the wave front interference are found. Simulation has shown that the wave heights at some coastal sites can reach 9 m and, thus, may cause considerable destruction and deaths.

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Authors and Affiliations

  1. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia

    L. I. Lobkovsky, B. V. Baranov & K. A. Dozorova

  2. Nizhni Novgorod State Technical University, Nizhni Novgorod, Russia

    R. Kh. Mazova, B. A. Kisel’man & N. A. Baranova

Authors
  1. L. I. Lobkovsky
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  2. B. V. Baranov
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  3. K. A. Dozorova
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  4. R. Kh. Mazova
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  5. B. A. Kisel’man
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  6. N. A. Baranova
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Additional information

Original Russian Text © L.I. Lobkovsky, B.V. Baranov, K.A. Dozorova, R.Kh. Mazova, B.A. Kisel’man, N.A. Baranova, 2014, published in Okeanologiya, 2014, Vol. 54, No. 4, pp. 561–573.

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Lobkovsky, L.I., Baranov, B.V., Dozorova, K.A. et al. The Komandor seismic gap: Earthquake prediction and tsunami computation. Oceanology 54, 519–531 (2014). https://doi.org/10.1134/S0001437014030072

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  • DOI: https://doi.org/10.1134/S0001437014030072

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