人工衛星光学センサ画像の目視判読による2008年中国四川地震での北川県南東部の建物被害分布

概要

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In order to evaluate distribution of building damage in the southeastern part of Beichuan county, severely damaged by the 2008 Sichuan, China, earthquake, visual damage detection technique is applied to pre- and post-event satellite optical images. The locations of about 5,000 buildings are identified from the pre-event image. The damage of each building is classified into three categories; complete collapse, severe damage, and less than moderate damage by comparing the pre- and post-event images. The damage ratio computed from the result of the visual detection in Qushan town, the capital of Beichuan county, is more than 80%. The distribution of the building damage shows that the damage ratios on the hanging wall of the earthquake fault is higher than those on the foot wall.
一般社団法人日本地震工学会の論文