Geomorphic characteristics of hillslope and channelized debris flows: A case study in the Shitou area of central Taiwan

2009 ◽  
Vol 6 (3) ◽  
pp. 266-273 ◽  
Author(s):  
Jinn-Chyi Chen ◽  
Ching-Weei Lin ◽  
Lung-Chang Wang
Keyword(s):  
Debris Flows ◽  
Central Taiwan

scholarly journals Evaluation of Rainfall-Triggered Debris Flows under the Impact of Extreme Events: A Chenyulan Watershed Case Study, Taiwan

Water ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2201
Author(s):  
Jinn-Chyi Chen ◽  
Wen-Shun Huang
Keyword(s):  
Debris Flow ◽  
Extreme Events ◽  
Debris Flows ◽  
Extreme Rainfall ◽  
Extreme Rainfall Event ◽  
Extreme Rainfall Events ◽  
Hourly Rainfall ◽  
Central Taiwan ◽  
The Impact

This study examined the conditions that lead to debris flows, and their association with the rainfall return period (T) and the probability of debris flow occurrence (P) in the Chenyulan watershed, central Taiwan. Several extreme events have occurred in the Chenyulan watershed in the past, including the Chi-Chi earthquake and extreme rainfall events. The T for three rainfall indexes (i.e., the maximum hourly rainfall depth (Im), the maximum 24-h rainfall amount (Rd), and RI (RI = Im× Rd)) were analyzed, and the T associated with the triggering of debris flows is presented. The P–T relationship can be determined using three indexes, Im, Rd, and RI; how it is affected and unaffected by extreme events was developed. Models for evaluating P using the three rainfall indexes were proposed and used to evaluate P between 2009 and 2020 (i.e., after the extreme rainfall event of Typhoon Morakot in 2009). The results of this study showed that the P‒T relationship, using the RI or Rd index, was reasonable for predicting the probability of debris flow occurrence.

Effects of landslide and other physiographic factors on the occurrence probability of debris flows in central Taiwan

2015 ◽  
Vol 74 (2) ◽  
pp. 1785-1801 ◽  
Author(s):  
Jen-Chen Fan ◽  
Hsiao-Yu Huang ◽  
Che-Hsin Liu ◽  
Chih-Hsiang Yang ◽  
Jia-Jun Guo ◽  
...  
Keyword(s):  
Debris Flows ◽  
Occurrence Probability ◽  
Central Taiwan

Pure risk premium rating of debris flows based on a dynamic run-out model: a case study in Anzhou, China

2021 ◽  
Author(s):  
Zhifei Deng ◽  
Jifu Liu ◽  
Lanlan Guo ◽  
Jiaoyang Li ◽  
Junming Li ◽  
...  
Keyword(s):  
Risk Premium ◽  
Debris Flows
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