Source process of the 2011 off the Pacific coast of Tohoku Earthquake with the combination of teleseismic and strong motion data | Zendy

Yasuhiro Yoshida | Zendy; Hiroshi Ueno | Zendy; D. Muto | Zendy; Shigeki Aoki | Zendy

Open Access

Source process of the 2011 off the Pacific coast of Tohoku Earthquake with the combination of teleseismic and strong motion data

Author(s) -

Yasuhiro Yoshida,

Hiroshi Ueno,

D. Muto,

Shigeki Aoki

Publication year - 2011

Publication title -

earth planets and space

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.835

H-Index - 74

eISSN - 1880-5981

pISSN - 1343-8832

DOI - 10.5047/eps.2011.05.011

Subject(s) - hypocenter , seismology , geology , foreshock , waveform , geodesy , fault (geology) , aftershock , induced seismicity , physics , quantum mechanics , voltage

We have derived preliminary results for the source process of the March 11, 2011 off the Pacific coast of Tohoku Earthquake (the 2011 Tohoku Earthquake; Mw = 9.0) from two types of seismic waveform data: teleseismic P waves and regional strong motion data. The common features of these two analyses are as follows: (a) The main rupture is located to the east of the initial break point (the shallower side of the hypocenter), and maximum slip amounts were more than 25 m. (b) The size of the main fault was about 450 km in length and 200 km in width; the duration of rupture was more than 150 s; and Mw was 9.0. (c) The initial rupture gradually expanded near the hypocenter (0–40 s) and subsequently propagated both southwards and northwards.

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