IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2010  > Vol7 No.3
Non-structural mitigation programs for sediment-related disasters after the Chichi Earthquake in Taiwan
Chen Su-Chin; Huang Bo-Tsung
Corresponding AuthorChen, SC
2010-09
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
Volume7Issue:3Pages:291–300
AbstractFollowing the Chichi Earthquake (M(L)=7.3) in 1999, sediment-related disasters, such as landslides and debris flows, have become more frequent in Taiwan. Because engineering structures cannot be fully and rapidly emplaced, the government has initiated non-structural hazard mitigation programs. Initially, community debris flow evacuation drills were promoted in 2000. Typhoon Toraji caused numerous debris flow events in July 2001, and some communities evacuated according to the drills, significantly reducing the numbers of possible casualties. Based on that result, the government expanded the program for evacuation drills. Secondly, the early warning system created after the Chichi Earthquake will prevent many potential future casualties. Rainfall threshold values for debris flow warnings in different areas are determined from information received from local weather stations and modified for local geomorphologic situations. Realtime information is gradually being integrated to create a debris flow disaster warning system, the goal of which is to provide warnings to zones in which debris flows are likely. The warning system was launched in 2005 and has two levels of alarms: yellow and red. The final, red alarm triggers enforced evacuation. Overall, the decrease in casualties from debris flows during the decade after the Chichi Earthquake is not the result of a decrease in number or severity of sediment related disasters, but is more directly related to the gradually improved early warning and evacuation system. However, the compound hazards resulting from Typhoon Morakot in 2009 remind us of the ongoing need for improving the existing mitigation system.
KeywordWarning System Evacuation And Shelter Rainfall Threshold Value For Debris Flow Chichi Earthquake
Language英语
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5901
CollectionJournal of Mountain Science_Journal of Mountain Science-2010_Vol7 No.3
Recommended Citation
GB/T 7714
Chen Su-Chin,Huang Bo-Tsung. Non-structural mitigation programs for sediment-related disasters after the Chichi Earthquake in Taiwan[J]. JOURNAL OF MOUNTAIN SCIENCE,2010,7(3):291–300.
APA Chen Su-Chin,&Huang Bo-Tsung.(2010).Non-structural mitigation programs for sediment-related disasters after the Chichi Earthquake in Taiwan.JOURNAL OF MOUNTAIN SCIENCE,7(3),291–300.
MLA Chen Su-Chin,et al."Non-structural mitigation programs for sediment-related disasters after the Chichi Earthquake in Taiwan".JOURNAL OF MOUNTAIN SCIENCE 7.3(2010):291–300.
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