Abstract
Land subsidence in the Northern Kanto Plain has continued by groundwater abstraction. It has triggered direct and indirect damage to infrastructure in the objective area. Local governments are faced with the necessity of taking countermeasures against past damage and the probable occurrence of damage in the future. Based on the above-mentioned situation, this study is intended to construct a GIS-aided damage estimation map for existing infrastructures. It presents estimates for damage caused by land subsidence. Such a map would support decision making for local governments and provide information to citizens in the disaster area. Moreover, analysis using a GIS-assisted hazard map reveals the relation between predicted settlement of land subsidence and the present situation of infrastructure distribution. Such analyses will facilitate a priori determination of countermeasures against land subsidence-induced damage.
