Distribution Of Aerial Hazard Maps Of
Debris Flow On A Social Network Service
Author(s)
T. Moriyama, H. Nakayama, K. Kon, M. Hirano & M. Hikida
Abstract
Disaster prevention information systems should maintain high levels of
reliability for information. Internet Bulletin Board Systems (BBS) occasionally
include inaccurate, malicious or incorrect information. Anonymous posts to
bulletin boards are particularly unreliable. BBS should not serve as primary
means for official communication. Moreover, most local governments are
hesitant to issue evacuation orders despite the urgency of timely announcements
because of the suddenness of debris flows. In the current study, we developed a
disaster prevention information system using a combined Geographic
Information System (GIS) and Social Network Service (SNS) called giSight. The
function of SNS is to keep the reliability of information at a high level by
registering users. A hazard map of landslide and debris flow is indicated on the
GIS with high-resolution aerial photograph tile maps. This hazard map identifies
the mesh polygon with dangerous conditions in real-time, i.e. dynamically. This
system is not only useful for disaster prevention, but is also expected to facilitate
the exchange of information by residents in normal circumstances.
Keywords: debris flow, hazard map, critical rainfall, social network service,
disaster information system, Geographic Information System.
1 Introduction
Evacuation of residents is occasionally necessary to prevent the loss of life from
debris flow following intense rainfall. However, official evacuation orders by
Keywords
debris flow, hazard map, critical rainfall, social network service,
disaster information system, Geographic Information System.
Related Book
Other papers in this volume
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