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

Coseismic Slip Distribution Model Inferred from GEONET data (Preliminary)

Released: Mar. 15, 2011, Modified: Apr. 22, 2011, Japanese version of this page

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

Slip Distribution Model and Predicted Vertical Displacement

Coseismic slip distribution
Coseismic slip distribution[PDF: 694KB]

Fitting between observation and calculation
Fitting between observation and calculation (horizontal)[PDF: 633KB] Fitting between observation and calculation (vertical)[PDF: 633KB]

Vertical displacement calculated from our slip distribution model
Vertical displacement calculated from our slip distribution model[PDF: 329KB]

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)

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Contact

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)

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