Specific features of the appearance of seismotectonic deformations during the genesis of March 11, 2011, Tohoku earthquake source

The results of investigating the preparation zone of the catastrophic earthquake of March 11, 2011, near the eastern coast of Honshu Island are presented. A retrospective analysis of the focal mechanisms of deep earthquakes in the western part of the Pacific Ocean made it possible to reveal their in...

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Published inIzvestiya. Atmospheric and oceanic physics Vol. 47; no. 8; pp. 962 - 970
Main Authors Rogozhin, E. A., Yunga, S. L., Rodina, S. N.
Format Journal Article
LanguageEnglish
Published Dordrecht SP MAIK Nauka/Interperiodica 01.12.2011
Springer Nature B.V
Subjects
Climatology
Deformation
Earth and Environmental Science
Earth Sciences
Earthquakes
Geophysics/Geodesy
Marine
Plate tectonics
Seismic activity
Seismology
IW, Pacific
INW, Japan, Honshu
INW, Japan, Honshu, Miyagi Prefect., Tohoku
seismotectonic deformations
deep-focus foreshocks
Honshu Island
earthquake
CMT solutions
Tohoku earthquake
focal mechanisms
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Summary:The results of investigating the preparation zone of the catastrophic earthquake of March 11, 2011, near the eastern coast of Honshu Island are presented. A retrospective analysis of the focal mechanisms of deep earthquakes in the western part of the Pacific Ocean made it possible to reveal their influence on the zone of the Tohoku earthquake source. The preparation of this earthquake is also investigated within an analysis of the seismotectonic deformation processes at the regional level, which includes an estimation of the temporal trends of some key parameters, as well as the detection of their variations and the spatial confinement of anomalies to the source zone.
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ISSN:0001-4338
1555-628X
DOI:10.1134/S0001433811080081