Preprints
https://doi.org/10.5194/nhess-2022-270
https://doi.org/10.5194/nhess-2022-270
 
12 Jan 2023
12 Jan 2023
Status: this preprint is currently under review for the journal NHESS.

Characteristics of debris flows recorded in the Shenmu area of central Taiwan between 2004 and 2021

Yi-Min Huang Yi-Min Huang
  • Department of Civil Engineering, Feng Chia University, Taichung, 407, Taiwan, R.O.C.

Abstract. The data of debris-flow events between 2004 and 2001 in the Shebmu area Taiwan were presented and discussed in this paper. Total of 20 debris flows were observed in this time interval. The monitored data include rainfall, flow velocity, soil moisture, and ground surface vibrations. Debris flows in the Shenmu area usually occurred in the Aiyuzi Stream during the rainy season, May to September, and about once per year after 2009. The measured rainfalls from separate monitoring stations were compared and the rainfall thresholds of the Shenmu area were analysed using the rainfall intensity (I), the accumulated rainfall (R), and durations (D). The dataset and the rainfall thresholds of the Shenmu area permits the comparison with other monitored catchments.

Yi-Min Huang

Status: open (until 23 Feb 2023)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on nhess-2022-270', Anonymous Referee #1, 22 Jan 2023 reply

Yi-Min Huang

Yi-Min Huang

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Short summary
Debris flows are common hazards in Taiwan and the debris-flow early warning is important for disaster responses. The study results had shown that the rainfall thresholds of debris flows were analyzed and determined in terms of rainfall intensity, accumulated rainfall, and rainfall duration, based on the case histories in Taiwan. These thresholds are useful for disaster management and the cases in Taiwan are advantageous to the global debris-flow database.
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