Deformed Overhead View Map for Distribution and Occupancy of Temporary Housing Government-Public Safety Unit with Time-Series Variation after the Niigataken Chuetsu-oki Earthquake in 2007

Yokohama National University, Center for Risk Management and Safety Sciences

The Niigataken Chuetsu-oki earthquake occurred in the Chuetsu region of Niigata prefecture on July 16th, 2007, and caused a great deal of structural damage. This map describes not only the relative position of the temporary housing site in a disaster-stricken area—grasping the big picture—but also shows specific information of each unit, such as its condition, stored in an attribute table.

The quake refugees are allowed to live in the provisional houses free of charge for up to two years. That means local officials must work effectively to help put people's lives back in order. The lesson learned from past seismic disasters is to pay attention to the people who could end up dying by being isolated in temporary housing.

The housing opportunity started in August 2007. This map represents conditions as of 2008, after the turn of the fiscal year. The occupancy ratio decreased by 84.3 percent at the time. In these situations, georeferential relational database management systems, such as building damage reports and the basic resident register, were corrected by local officials and emergency response research teams. They were used to support local officials in the rehabilitation and reconstruction period.

Courtesy of Yokohama National University, Kyoto University, Niigata University, and Niigata GIS Association.

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