Dissemination of information on debris flow hazard areas using GIS technology
The types of debris flow disasters in Japan are diversifying these years. New residential areas developed on the foothill have increasingly been affected by debris flows. Also, the ratio of senior citizens and other disaster-vulnerable people involved in debris flows is increasing. To cope with the situation especially in terms of nonstructural measures, the Sediment-related Disaster Prevention Law was established in 2001. Under this law, various nonstructural measures have been promoted, such as the establishment of a warning and evacuation system and restriction of land development. Presented in this report is our effort to prepare a hazard map using the latest geographic information system (GIS) technology, to be utilized for disseminating information on debris flowhazard areas and for warning and evacuation activities. The hazard map is prepared by overlaying debris flow hazard areas, refuge areas, evacuation routes, etc. over a numerical map and an orthophoto utilizing GIS technology. The prepared hazard map makes it possible to inform local residents about the vulnerability of their areas in an easy-to- see visually manner.
debris flow disaster nonstructural measures GIS orthophoto hazard map
T. Mori H. Tanaka J. Kurihara K. Mori N. Tsuzuki
Sabo Frontier Foundation, Tokyo, Japan Public Works Research Institute, Ibaraki, Japan Digital Earth Technology, Tokyo, Japan Nakanihon Air Service, Aichi, Japan
国际会议
成都
英文
455-462
2007-05-17（万方平台首次上网日期，不代表论文的发表时间）