ANALYSIS OF TOPOGRAPHIC CHANGE USING AVIATION LASER SURVEY DUE TO THE 2011 TOHOKU TSUNAMI

Abstract

 This study analyzed topographic change using aviation laser survey and aerial photography due to the 2011 off the Pacific coast of Tohoku Earthquake Tsunami. The study area was from Aomori to Chiba prefectures in the tsunami inundation zone. The results suggested the relationship between the amount of erosion and tsunami height. Besides, the fill in Asahi city, Chiba prefecture, was eroded locally by the tsunami. The factor was investigated by topographic analysis using aviation laser survey, aerial photography and numerical simulation.