Preprints
https://doi.org/10.5194/nhess-2021-409
https://doi.org/10.5194/nhess-2021-409
 
21 Jan 2022
21 Jan 2022
Status: a revised version of this preprint was accepted for the journal NHESS and is expected to appear here in due course.

Rapid Landslide Risk Zoning toward Multi-Slope Units of the Neikuihui Tribe for Preliminary Disaster Management

Chih-Chung Chung1 and Zih-Yi Li2 Chih-Chung Chung and Zih-Yi Li
  • 1Associate Professor, Dept. of Civil Engineering/Research Center for Hazard Mitigation and Prevention, National Central University, 300 Zhongda, Rd., Zhongli Dist., Taoyuan, 320, Taiwan
  • 2Research Assistant, Dept. of Civil Engineering, National Central University, 300 Zhongda, Rd., Zhongli Dist., Taoyuan, 320, Taiwan

Abstract. Taiwan features steep terrain and a fragile geology environment accompanied by frequent earthquakes and typhoons annually. Meanwhile, with the booming economy and rapid population growth, activities are shifting from metropolises to the suburban and mountain areas in Taiwan. However, for example, the Neikuihui tribe in northern Taiwan evolves landslide disasters during extreme rainfall events. To rapidly examine landslide risk in the tribe area for preliminary disaster management, the well-known principle of Risk, which comprises Hazard, Exposure, and Vulnerability, was carefully adapted to examine 14 slope units around the Neikuihui tribe region. The framework of risk zoning is improved based on the previous quantified findings regarding the inventory of the deep-seated landslides in southern Taiwan. Moreover, the proposed procedures comprehensively involve the susceptibility, activity, exposure, and vulnerability of each slope unit. The analyses of the rapid risk zoning toward multi-slope units reveal that No.11 of slope units around the Neikuihui tribe has a relatively higher landslide risk level, and the No.11 slope unit indeed suffered landslide disaster during the typhoon event in 2016. This study preliminarily proves that the proposed framework and details of rapid risk zoning can help identify a relatively high-risk slope unit around a tribal region and address pre-countermeasures for disaster management.

Chih-Chung Chung and Zih-Yi Li

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on nhess-2021-409', Anonymous Referee #1, 07 Mar 2022
    • AC1: 'Reply on RC1', Chih-Chung Chung, 14 Mar 2022
  • RC2: 'Comment on nhess-2021-409', Anonymous Referee #2, 28 Mar 2022
    • AC2: 'Reply on RC2', Chih-Chung Chung, 05 Apr 2022

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on nhess-2021-409', Anonymous Referee #1, 07 Mar 2022
    • AC1: 'Reply on RC1', Chih-Chung Chung, 14 Mar 2022
  • RC2: 'Comment on nhess-2021-409', Anonymous Referee #2, 28 Mar 2022
    • AC2: 'Reply on RC2', Chih-Chung Chung, 05 Apr 2022

Chih-Chung Chung and Zih-Yi Li

Chih-Chung Chung and Zih-Yi Li

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Short summary
The Neikuihui tribe in northern Taiwan faces landslides during rainfall events. Since government needs to respond for disaster management toward the most risk tribe, this study develops risk zoning, which involves the susceptibility, activity, exposure, and vulnerability of each slope unit of the tribe. Results reveal that the No.11 slope units of the Neikuihui tribe has a higher risk and did suffer a landslide during the typhoon in 2016.
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