Japan Geoscience Union Meeting 2016

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Symbol S (Solid Earth Sciences) » S-SS Seismology

[S-SS32] Crustal Deformation

Tue. May 24, 2016 9:00 AM - 10:30 AM A05 (APA HOTEL&RESORT TOKYO BAY MAKUHARI)

Convener:*Masayuki Murase(Department of Earth and Environmental Sciences, College of Humanities and Sciences, NIHON University), Ryosuke Doke(Hot Springs Research Institute of Kanagawa Prefecture), Chair:Hisashi Suito(Geospatial Information Authority of Japan), Yusaku Ohta(Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University)

9:30 AM - 9:45 AM

[SSS32-15] Change of crustal deformations after the 2011 Tohoku-oki earthquake

*Hisashi Suito1 (1.GSI of Japan)

Keywords:2011 off the Pacific coast of Tohoku earthquake, postseismic deformation

Large displacements induced by the great earthquake occurred on March 11, 2011, were observed by GEONET over the entire Japanese Islands. The maximum horizontal displacement observed by the GEONET reaches 5.4m at the tip of the Oshika peninsula. The subsidence up to 1.1m was observed by the land GPS along the Pacific coast. The postseismic deformations caused by this great earthquake are still lasting over the northeast and central Japan area.
We report the change of postseismic deformations following the 2011 Tohoku-oki earthquake. We also report the mechanisms of these postseismic deformations.