建物及人員在土石流災害中之脆弱性探討-以莫拉克風災之南沙魯里為例

Translated title of the contribution: Vulnerability Assessment of Buildings and Residents for the Catastrophic Debris Flow in Nansalu Village during Typhoon Morakot

Hsien Ter Chou, Ting Chi Tsao, Chih Hao Hsu, Ching Fang Lee, Chien Hao Huang

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

A catastrophic debris flow occurred in Nansalu Village during Typhoon Morakot on August 9, 2009. After the event, we conducted field investigations and interviews with local residents to explore the magnitude and the process of the debris flow. We propose equations to obtain both the peak velocity and the deposition volume of the debris flow. The outdoor deposition depths of destroyed buildings exceeded 2.5 m, and the ratio between the indoor and outdoor deposition depths for damaged buildings was approximately 0.73. The impact of boulders and large woody debris accompanying the snout should be considered in vulnerability assessments of buildings. When the deposition depth exceeds 1.5 m, fatalities increase both indoor and outdoor for residents. Both older adult women and infants are at higher risk when debris flows occur. Strategies to reduce the vulnerability of buildings and residents are also proposed in this study.

Translated title of the contributionVulnerability Assessment of Buildings and Residents for the Catastrophic Debris Flow in Nansalu Village during Typhoon Morakot
Original languageChinese (Traditional)
Pages (from-to)70-79
Number of pages10
JournalJournal of Chinese Soil and Water Conservation
Volume54
Issue number1
DOIs
StatePublished - Mar 2023

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