The 2011 off the Pacific coast of Tohoku Earthquake: Coseismic Slip Distribution Model (Preliminary)

We constructed a distributed slip model using coseismic surface displacement data observed by the GPS Earth Observation Network System (GEONET) for the 2011 off the Pacific coast of Tohoku Earthquake. The vertical displacement calculated using our slip model suggests that large subsidence occurs along the Pacific coast.

This is a preliminary result. We constructed a revised model using additional GPS data which manually collected after restoration of a data transmission system.

New!!  Revised coseismic slip distribution model

Coseismic slip distribution


Fitting between observation and calculation


Vertical displacement calculated from our slip distribution model

Date-Time	March 11, 2011 14:46 JST March 11, 2011 05:46 UTC
Hypocenter Location	38.103°N, 142.860°E　Depth：24 km (JMA, as of 2011-03-13) 38.322°N, 142.369°E　Depth：22.4 km (USGS, as of 2011-03-13)
Moment Magnitude	9.0 (JMA, as of 2011-03-13) 9.0 (USGS, as of 2011-03-13)

Copyright (C) Geospatial Information Authority of Japan, All rights Reserved.

We welcome links from your website to this website. When using materials on this website, we ask that proper credit be given.

IMAKIIRE Tetsuro : Principal Researcher for Geography and Crustal Dynamics Research Center

TOBITA Mikio : Director of Division (Crustal Deformation Research Division)

OZAWA Shinzaburo : Chief Researcher (Crustal Deformation Research Division)

NISHIMURA Takuya : Chief Researcher (Crustal Deformation Research Division)

SUITO Hisashi : Cheif Researcher (Crustal Deformation Research Division)

KOBAYASHI Tomokazu : Researcher (Crustal Deformation Research Division)

Postseismic Slip Distribution Model
Rectangular Fault Model
Rectangular Fault Model (Preliminary) 
Crustal Deformation (In Japanese)