GSI HOME > Research & Development > Geography and Crustal Dynamics Research Center > Crustal Deformation Research > The 2011 off the Pacific coast of Tohoku Earthquake: Coseismic Slip Distribution Model  

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

Crustal Deformation and Fault Model obtained from GEONET data analysis

Released: Apr. 21, 2011, Revised: Apr. 22, 2011, Japanese version of this page

Crustal Deformation and Fault Model

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.

GSI manually collected GPS data which were unavailable due to the suspension of a data transmission system just after the earthquake. We used these data to revise the preliminary model presented on March 14, 2011.
 

Slip Distribution Model and Predicted Vertical Displacement

Coseismic slip distribution
Coseismic slip distribution[PDF: 119KB]

Fitting between observation and calculation
Fitting between observation and calculation (horizontal)[PDF: 106KB] Fitting between observation and calculation (vertical)[PDF: 118KB]

Vertical displacement calculated from our slip distribution model
Vertical displacement calculated from our slip distribution model[PDF: 104KB]

The 2011 off the Pacific coast of Tohoku Earthquake

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 March 13, 2011)
38.322°N, 142.369°E, Depth: 22.4 km (USGS, as of March 13, 2011)
Moment Magnitude 9.0 (JMA, as of March 13, 2011)
9.0 (USGS, as of March 13, 2011)

Copyrights and Credits

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.

Contact

IMAKIIRE Tetsuro : Research Coordinator for Geography and Crustal Dynamics Research
TOBITA Mikio : Head of Division (Crustal Deformation Research Division)
OZAWA Shinzaburo : Chief Researcher (Crustal Deformation Research Division)
NISHIMURA Takuya : Chief Researcher (Crustal Deformation Research Division)
SUITO Hisashi : Researcher (Crustal Deformation Research Division)
KOBAYASHI Tomokazu : Researcher (Crustal Deformation Research Division)

contact

Some files are available in PDF format. To view PDF files, Adobe System's free "Adobe Reader" software must be installed. Please visit the following link to download the free software.

Go to top