Verification of a method for determining analysis area of building damage in a tsunami affected area by using L-band SAR data

Abstract

The grasping damage by SAR is suited to large scaled disaster such as an earthquake and tsunami. Especially, L-band SAR data can observe extensive areas at once. To analyze building damage caused by the 2011 Tohoku earthquake and tsunami disaster, we applied a method to divide target area into rectangular analyzed areas for the evaluation of building damage. A number of method for estimating building damage at a rectangular tile scale have been proposed, however a suitable size of the tile has not been identified. Therefore, this study aims to examine the effective size for damage estimation by clarifying the relation between the number of buildings in the analyzed area.