Surface Movements During the 2011 Great Tohoku-Oki Earthquake Detected by ALOS/PALSAR

摘要

The Tohoku earthquake of March 11,2011 caused a remarkably large deformation over Honshu, Japan. By analyzing ALOS/PALSAR data, we detected up to 5 m of eastward shift at the tip of the Oshika peninsula, and〜1 m subsidence along the Pacific coast. These deformations were caused by huge reverse slip on the plate interface near the volcanic unrests, and potential landslides. Furthermore, changes in intensity and coherence show good coincidence with areas of tsunami inundation and liquefaction.