Study on Cell Size for Building Damage Ratio Based on Data of the 1995 Hyogo-Ken Nanbu Earthquake

Abstract

Characteristics of damage ratio data were discussed using G 匸 S data of buHdings damaged by I卜 e 1995 Hyogo − ken Nanbu Ea曲 quake ． A regression analysis ofthe damage ratio f（ 〕r two kinds Qf ar¢ a unit shQwed that dainage ratios reported by Kobe University were about 60 ％ of those rcported by Building Research lnstitute ． An analysis of damage ra じ ios according 【 o differenl ceU areas revealed lhat the ad 閃 uate cell size for data collection ranges from lO， 000 to 20e． OOO m ！ from the viewpoints of the number of target bui ］ dings in the unit and the resolution level f （ ） r the danlage distribution ．

Visual Damage Assessment using High-Resolution Satellite Images following the 2003 Bam, Iran, Earthquake

“…Cells that do not contain buildings were left blank. The size of the cells can be changed depending on the objective of the study and the morphology of the study area ͑see also Kohiyama et al 2000͒; however, the suitable cell size will have to be determined by trial and error. An overview of the area around the Citadel chosen for damage assessment.…”