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RUSSIAN JOURNAL OF EARTH SCIENCES VOL. 8, ES5002, doi:10.2205/2006ES000209, 2006

Implications of the seismic source dynamics for the characteristics of a possible tsunami in a model problem of the seismic gap in the Central Kurile region

L. I. Lobkovsky, and B. V. Baranov
P. P. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia

R. Kh. Mazova, and L. Yu. Kataeva
Nizhny Novgorod State Technical University, Nizhniy Novgorod, Russia


Abstract

[1]  Various scenarios of earthquakes and the associated tsunami wave generation are numerically simulated. It is shown that, depending on the chosen dynamic source parameters in the central seismic gap zone of the Kurile-Kamchatka arc, the characteristics of tsunami waves in the water area of the Sea of Okhotsk and Kurile-Kamchatka zone can differ dramatically, from insignificant inundation of Sakhalin and Kamchatka coasts to a catastrophic run-up of waves up to 8 m in height. Detailed numerical constraints on the tsunami wave run-up are obtained for a number of points of the Sakhalin coastline, the form of the first waves climbing the coast is determined, and the run-up velocity characteristics are computed.

Received 15 October 2006; accepted 28 October 2006; published 28 November 2006.

Keywords: tsunami generation, submarine landslide, sedimentary mass, elasto-plastic model, shallow water equations.

Index Terms: 3025 Marine Geology and Geophysics: Marine seismics; 3060 Marine Geology and Geophysics: Subduction zone processes; 3285 Mathematical Geophysics: Wave propagation; 4255 Oceanography: General: Numerical modeling; 4564 Oceanography: Physical: Tsunamis and storm surges.


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Citation: Lobkovsky, L. I., B. V. Baranov, R. Kh. Mazova, and L. Yu. Kataeva (2006), Implications of the seismic source dynamics for the characteristics of a possible tsunami in a model problem of the seismic gap in the Central Kurile region, Russ. J. Earth Sci., 8, ES5002, doi:10.2205/2006ES000209.

Copyright 2006 by the Russian Journal of Earth Sciences
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