Journal cover Journal topic
Natural Hazards and Earth System Sciences An interactive open-access journal of the European Geosciences Union
doi:10.5194/nhessd-2-4659-2014
© Author(s) 2014. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
21 Jul 2014
Review status
This discussion paper has been under review for the journal Natural Hazards and Earth System Sciences (NHESS). The revised manuscript was not accepted.
Determination of the runoff threshold for triggering debris flows in the area affected by the Wenchuan Earthquake
P. Cui1, X. J. Guo1,2, and J. Q. Zhuang3 1Key Laboratory of Mountain Hazards and Earth Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China
2University of Chinese Academy of Sciences, Beijing 100049, China
3School of Geological Engineering and Surveying, Changan University, Xi'an 710064, China
Abstract. We constructed an experiment to determine the critical runoff discharge for debris flow initiation in Wenchuan Earthquake area. A single dimensionless discharge variable was integrated to incorporate influential parameters, including channel width, median particle diameter, and surface flow discharge. The results revealed that relationship with the debris flow density, slope and discharge required. Taking into account the behaviors of debris flow formation corresponding to different ranges of slopes, the critical runoff thresholds for debris flow initiation were calculated for three different scenarios. The thresholds were validated against actual debris flow events, and the use in this study is applicable.

Citation: Cui, P., Guo, X. J., and Zhuang, J. Q.: Determination of the runoff threshold for triggering debris flows in the area affected by the Wenchuan Earthquake, Nat. Hazards Earth Syst. Sci. Discuss., 2, 4659-4684, doi:10.5194/nhessd-2-4659-2014, 2014.
P. Cui et al.
Interactive discussionStatus: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version      Supplement - Supplement
 
RC C1750: 'Referee Comments', Anonymous Referee #1, 31 Jul 2014 Printer-friendly Version 
AC C2096: 'Responds to the reviewer’s comments', Xiaojun Guo, 15 Sep 2014 Printer-friendly Version Supplement 
 
RC C1886: 'Referee Comment', Anonymous Referee #2, 25 Aug 2014 Printer-friendly Version 
AC C2097: 'Responds to the reviewer’s comments', Xiaojun Guo, 15 Sep 2014 Printer-friendly Version Supplement 
P. Cui et al.
P. Cui et al.

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