Verification of Early Impacted Area Estimation Method Using DMSP/OLS Night-time Imagery on the Basis of Field Survey

Abstract

本研究では、小檜山・他(1999)の提案する衛星が捉える夜間可視画像を用いた早期被災地推定手法の検証を行った.検証は, 小檜山・他が行ったトルコ・マルマラ地震(1999)の被災地の推定結果と, 筆者らがトルコで行った現地調査の結果を照合する形で行った.その結果, 小檜山・他の推定手法が, 7.2km×7.2kmメッシュ単位以上での被災地判定に適していること, また, 重度の建物被害だけでなく, より軽度の被害も含めた被害を捕捉していることが明らかになった.

In this paper, we verify the method to estimate impacted area using night-time imagery data captured by sattelite proposed by Kohiyama et al.( 1999). Kohiyama et al. estimated the possible impacted area of 1999 Marmara earthquake disaster in Turkey based on their method. We conducted a field survey in the impacted area in Turkey to verify their estimation. As a result, it was clarified that the estimation is effective to detect impacted area in 7.2km X 7.2km unit, and that their estimation can detect various kinds of damages rather than only severe housing damages.