QuickBird衛星画像を用いた2007年ペルー・ピスコ地震の建物被害把握

抄録

A strong earthquake struck the city of Pisco in the coastal region of central Peru on 15 August 2007. In this paper, the authors performed visual damage detection of buildings using images obtained by high-resolution satellite QuickBird. The visual damage interpretation was carried out building by building, comparing the pre-event and postevent images. Then the damage grades of about 10,800 buildings were determined. The results were compared with field survey data and also with the result of visual damage inspection from aerial photographs, and the accuracy of damage inspection was studied. The results show that about 70% of collapsed buildings of the whole city were detected. Some amount of omission error was observed due to the limitation of vertical images.