The Japan Earthquake: Problems of Forecast

Левченко, Д. Г.; Kuzin, I. P.; Zubko, Yu. N.; Chervinchuk, S. Yu.

doi:10.3103/s0747923912010070

Cited by 1 publication

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“…Hence, the seismic gap (for example that in the north ern flank of the Kuril arc trench system) does not mean the finish of crustal mantle thrusting of Eurasia onto the Pacific Plate in the epoch of the global Pasa denian orogeny (Middle Pleistocene-present), but reflect the peculiarities of stress accumulation and preparation of new strong earthquakes, usually accompanied by tectonic (upthrow-thrust) tsunamis. This viewpoint is verified by investigation of the Tohoku Oki earthquake off the coast of Japan, which occurred on March 11, 2011 (Kossobokov, 2011;Levchenko et al, 2011;Lutikov, 2011;Lyubushin, SEISMIC INSTRUMENTS Vol. 49 No.…”

Section: Introductionmentioning

confidence: 69%

On the structure and seismotectonics of the Kuril arc-trench system

2013

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Based on the new regional catalog of focal mechanisms for 396 strong (M ≥ 6.0) earthquakes in the Kuril Okhotsk region and Japanese one in part for the period of 1964-2009 and with the data of seismic continuous profiling and multichannel common depth point sounding by reflection method used, the pecu liarities of the structure and seismotectonics of the Kuril arc trench system have been analyzed. Additionally, the features of the Benioff and Tarakanov opposite seismofocal zones, associated with the Kuril arc trench system, are studied. It is shown that the Benioff zone is a deep thrust through which the Kuril Arc (or Eurasian tectonic forefront) has thrust on the Pacific Plate by up to 50-70 km for the last 0.5-1.0 Ma (Pasadenian glo bal phase of folding and orogeny). The thrusting process formed the middle and lower parts of the Pacific Ocean slope, the tectonic couple of Pegasus regional nappe and accretionary prism, the ramp structure of the Kuril Trench, and probably the opposite seismofocal zones.

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Section: Introductionmentioning

confidence: 69%