کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6430548 | 1634800 | 2012 | 9 صفحه PDF | دانلود رایگان |

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 300Â km long and 160Â km wide. The largest slip of 44Â m is located up-dip of the hypocenter. The large slip amount, about 41Â m, ruptured the plate interface near the trench. The seismic moment calculated from the estimated slip distribution is 5.5Ã1022Â NÂ 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.
⺠Joint inversion is performed to study the source model of the 2011 Tohoku earthquake. ⺠Tsunami waveforms, GPS data and seafloor deformation data are used. ⺠Large coseismic slips up to 44 m near the trench. ⺠Additional source mechanism of tsunami could have been located near the trench.
Journal: Earth and Planetary Science Letters - Volumes 341â344, August 2012, Pages 234-242