TY - JOUR
T1 - Structural heterogeneity in the megathrust zone and mechanism of the 2011 Tohoku-oki earthquake (Mw 9.0)
AU - Zhao, Dapeng
AU - Huang, Zhouchuan
AU - Umino, Norihito
AU - Hasegawa, Akira
AU - Kanamori, Hiroo
PY - 2011/9/1
Y1 - 2011/9/1
N2 - The great 2011 Tohoku-oki earthquake (Mw 9.0) and its 339 foreshocks and 5,609 aftershocks (9-27 March 2011) were relocated using a three-dimensional seismic velocity model and local P and S wave arrival times. The distribution of relocated hypocenters was compared with a tomographic image of the Northeast Japan forearc. The comparison indicates that the rupture nucleation of the largest events in the Tohoku-oki sequence, including the mainshock, was controlled by structural heterogeneities in the megathrust zone.
AB - The great 2011 Tohoku-oki earthquake (Mw 9.0) and its 339 foreshocks and 5,609 aftershocks (9-27 March 2011) were relocated using a three-dimensional seismic velocity model and local P and S wave arrival times. The distribution of relocated hypocenters was compared with a tomographic image of the Northeast Japan forearc. The comparison indicates that the rupture nucleation of the largest events in the Tohoku-oki sequence, including the mainshock, was controlled by structural heterogeneities in the megathrust zone.
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U2 - 10.1029/2011GL048408
DO - 10.1029/2011GL048408
M3 - Article
AN - SCOPUS:80052476863
SN - 0094-8276
VL - 38
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 17
M1 - L17308
ER -