Stress change before and after the 2011 M9 Tohoku-oki earthquake
نویسندگان
چکیده
منابع مشابه
Large-scale Simulation of Seismic-wave Propagation of the 2011 Tohoku-oki M9 Earthquake
We describe a large-scale simulation of the seismic wave propagation from the 2011 Tohoku-Oki earthquake. We combine structure models for topography, sediments, crust and subducting plates to construct a 3D structure model for the northeastern Japan area. Then we simulate the near-field wave propagation by using a FDTD method which is accelerated by the use of multi-GPUs (Graphics Processing Un...
متن کاملTime-lapse change in anisotropy in Japan’s near surface after the 2011 Tohoku-Oki earthquake
[1] We apply seismic interferometry to strong-motion records to detect the near-surface (i.e., an upper few hundred meters deep) change in anisotropy caused by the MW 9.0 Tohoku-Oki earthquake on 11 March 2011. We show that the earthquake increased the difference between fast and slow shear-wave velocities arising from shear-wave splitting in most parts of northeastern Japan, but it did not sig...
متن کاملDisplacement above the hypocenter of the 2011 Tohoku-Oki earthquake.
The moment magnitude (M(w)) = 9.0 2011 Tohoku-Oki mega-thrust earthquake occurred off the coast of northeastern Japan. Combining Global Positioning System (GPS) and acoustic data, we detected very large sea-floor movements associated with this event directly above the focal region. An area with more than 20 meters of horizontal displacement, that is, four times larger than those detected on lan...
متن کاملHydro-Acoustic Wave Generation during the Tohoku-Oki 2011 Earthquake
We investigate the surface gravity and hydro-acoustic wave fields, generated by the 2011 Tohoku-Oki tsunamigenic event using a numerical model based on a computationally efficient depth-integrated equations for a compressible water column coupled to a dissipative sedimentary layers. Spectral analysis of bottom pressure time series obtained in deep water revealed the role of underlying layer on ...
متن کاملPrompt gravity signal induced by the 2011 Tohoku-Oki earthquake
Transient gravity changes are expected to occur at all distances during an earthquake rupture, even before the arrival of seismic waves. Here we report on the search of such a prompt gravity signal in data recorded by a superconducting gravimeter and broadband seismometers during the 2011 Mw 9.0 Tohoku-Oki earthquake. During the earthquake rupture, a signal exceeding the background noise is obs...
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ژورنال
عنوان ژورنال: Earth and Planetary Science Letters
سال: 2018
ISSN: 0012-821X
DOI: 10.1016/j.epsl.2018.09.035