A study of earth surface displacement influence on damaged buildings in Bam; applying Insar and fuzzy object-oriented techniques

One of the most important risks that ever has threaten human society is earthquake. we studied these ground changes after occurring earthquake in Bam by using optic and radar images. In this research we estimated amount of movement occurred in preceding area by using these Envisat satellite Remote Sensing images before and after earthquake in Bam. Also by using Indian IRS pancromatic image with 5 meter local accuracy and doing fusion techniques like HPF with Aster images and aerial photos of Bam in 2004 with Fuzzy object-based algorithm technique automatically studied building determination in this area. According to the effects of geological formations, in terms of finding appropriate places for building and construction as well as evaluate the effects of regional formations in the study area, which earthquake was occurred, 1:100,000 geological maps are used. In step analysis of research , the results from every step adapted with each other so that amount of movement through earthquake had changed between -0.19 to 0.32 and results from automatic determination of ruined buildings by And & Or operators had accuracy about 93% and 98% respectively. Correlation between ground movement and damage of buildings was evaluated by adapting these levels with each other. This correlation demonstrates linear correlation between results. Awareness of correlation between construction and building reactivity to the earthquake movements can improve urban managing and planning and decrease damages to the minimum.