Debris Flow Hazards And Emergency Response
In Taiwan
Author(s)
C.-Y. Chen, W.-C. Lee & F.-C. Yu
Abstract
According to the field investigation by Soil and Water Conservation Bureau
(SWCB) after the M7.6 Chi-Chi earthquake, there are 1,420 streams prone to
initiating debris flow. The initiated slopeland related hazards are correlated to the
geological conditions, topographic elevation, engineering design and human
induced effects in addition to the strong seismic effects. The study summarized
the debris flow and landslide hazards and their casual factors using field
investigation of the post seismic hazards in Taiwan. The emergency responses of
the National Science & Technology Center for Disaster Reduction (NCDR) and
governmental departments for typhoon induced flood and debris flow are
introduced herein. Through the use of the active response mechanism, the
casualties from typhoon-induced hazards are reduced and further enhancements
for hazard mitigation by the hazard characteristics are suggested.
Keywords: debris flow, landslide, emergency response, Chi-Chi earthquake,
Taiwan.
1 Introduction
According to statistics from the Central Weather Bureau, the total economic loss
of typhoon induced natural hazards is estimated to be around 174 billion Taiwan
dollars as an average each year from 1980 to 1998. Overall economic loss
increased following the M7.6 Chi-Chi earthquake in 1999 until recent years.
Typhoon Toraji (in 2001) caused a loss of 7,700 billion, Typhoon Nari cost (in
2001) 9,000 billion, and Typhoon Mindulle and the following storm (in 2004)
resulted in 8,900 billion of economic loss.
Keywords
debris flow, landslide, emergency response, Chi-Chi earthquake,
Taiwan.
Related Book
Other papers in this volume
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