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Source model of the great 2011 Tohoku earthquake estimated from tsunami waveforms and crustal deformation data

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Title: Source model of the great 2011 Tohoku earthquake estimated from tsunami waveforms and crustal deformation data
Authors: Gusman, Aditya Riadi Browse this author
Tanioka, Yuichiro Browse this author →KAKEN DB
Sakai, Shinichi Browse this author
Tsushima, Hiroaki Browse this author
Keywords: Tsunami waveforms
GPS data
Seafloor crustal deformation data
The 2011 Tohoku earthquake
Issue Date: Aug-2012
Publisher: Elsevier B.V.
Journal Title: Earth and Planetary Science Letters
Volume: 341-344
Start Page: 234
End Page: 242
Publisher DOI: 10.1016/j.epsl.2012.06.006
Abstract: The slip distribution of the 11 March 2011 Tohoku earthquake is inferred from tsunami waveforms, GPS data, and seafloor crustal deformation data. The major slip region extends all the way to the trench, and the large slip area extends 300 km long and 160 km wide. The largest slip of 44 m is located up-dip of the hypocenter. The large slip amount, about 41 m, ruptured the plate interface near the trench. The seismic moment calculated from the estimated slip distribution is 5.5 x 10^[22] N m (Mw 9.1). The large tsunami due to the 2011 Tohoku earthquake is generated from those large slip areas near the trench. The additional uplift at the sedimentary wedge as suggested for the 1896 Sanriku earthquake may have occurred during the 2011 Tohoku earthquake, too.
Type: article (author version)
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: Gusman, A. R.

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