Initiation of the great Mw 9.0 Tohoku–Oki earthquake
نویسندگان
چکیده
Article history: Received 3 June 2011 Received in revised form 27 June 2011 Accepted 28 June 2011 Available online 13 July 2011 Editor: P. Shearer
منابع مشابه
Structural heterogeneity in the megathrust zone and mechanism
[1] 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 ev...
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[1] We analyze the mechanical properties needed to account for the large shallow slip during the 2011 Tohoku-Oki earthquake and the activation of landward normal faulting within the forearc. We show that the morphology and internal structure of the forearc follows closely the prediction of the critical Coulomb wedge in horizontal compression, implying a high internal pore pressure ratio ( = 0.7...
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[1] We examine a region of the megathrust fault offshore of northeastern Honshu (38.75°–40.25°N, 141.5°–143.25°E) that we designate as the Sanriku-Oki low-seismicity region (SLSR). The SLSR, located near the northern termination of the 2011 Tohoku-Oki (Mw 9.0) rupture, lacks historical great earthquake ruptures and has relatively low levels of moderate-size (Mj ≥ 5.0) earthquakes, with subregio...
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تاریخ انتشار 2011