地震後の住宅回復過程の調査法 : 2004年新潟県中越地震・川口町東川口での試み

概要

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Repeated photographing of residential structures took place in an affected area of the 2004 Niigata-Ken-Chuetsu earthquake for a period of 457 days following the event. The survey purpose is to collect fundamental data for investigating mid-term change in housing stock in disaster hit areas. The central part of the town of Kawaguchi having 350 privately owned houses was chosen as the survey area. Pictures of all the houses, both damaged and undamaged, in the area were taken at intervals between 19 and 60 days. In the case of damaged buildings, pictures of the stack and removal work of debris and reconstruction work were taken, and those of vacant lots were taken when reconstruction did not take place. Recovery stages were classified on an ordinal scale with eleven categories. Recovery process curves were derived for each building, and their applicability to various topics in disaster study were generally discussed.