Strong Motion Characteristics of the 2011 Tohoku-Oki Earthquake
نویسندگان
چکیده
منابع مشابه
Source rupture process of the 2011 Tohoku - Oki earthquake derived from the strong - motion records
We reveal the source rupture process using the strong-motion data by the inversion analysis. The derived slip distribution shows one prominently large slip area extending from the hypocentre area to the shallow part of the fault along the trench axis, which is located far off the coastal region extensively damaged by the tsunamis. The shallow main rupture started 60 seconds after the initial br...
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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...
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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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[1] Using a hybrid MPI/OpenMP parallel finite element method for spontaneous rupture and seismic wave propagation simulations, we investigate features in rupture propagation, slip distribution, seismic radiation, and seafloor deformation of the 2011 Mw 9.0 Tohoku-Oki earthquake to gain physical insights into the event. With simplified shallow dipping (10 ) planar fault geometry, 1D velocity str...
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ژورنال
عنوان ژورنال: Zisin (Journal of the Seismological Society of Japan. 2nd ser.)
سال: 2012
ISSN: 1883-9029,0037-1114
DOI: 10.4294/zisin.64.169