gesjGEOGRAPHY, ENVIRONMENT, SUSTAINABILITYGEOGRAPHY, ENVIRONMENT, SUSTAINABILITY2071-93882542-1565Russian Geographical Society10.24057/2071-9388-2020-156gesj-2219Research ArticleRESEARCH PAPERFormation Conditions And Debris Flow Regime In Jiangjia Ravine, Yunnan, China – Applicability Of Russian MethodologyDingMingtao

Faculty of Geosciences and Environment Engineering 

The Western Park of the HiTech Industrial Development Zone (Xipu Town), Chengdu, Sichuan, 611756, China

ShnyparkovAleksandr L.

Faculty of Geography

Leninskie gory 1, Moscow, 119991

GrebennikovPavel B.

Faculty of Geography

Leninskie gory 1, Moscow, 119991

KhismatullinTimur I.

Faculty of Geography

Leninskie gory 1, Moscow, 119991

SokratovSergey A.

Faculty of Geography

Leninskie gory 1, Moscow, 119991

sokratov@geogr.msu.ruSouthwest Jiaotong UniversityChinaLomonosov Moscow State UniversityRussian Federation2022110120221512634Copyright © Ding M., Shnyparkov A.L., Grebennikov P.B., Khismatullin T.I., Sokratov S.A., 20222022Ding M., Shnyparkov A.L., Grebennikov P.B., Khismatullin T.I., Sokratov S.A.Ding M., Shnyparkov A.L., Grebennikov P.B., Khismatullin T.I., Sokratov S.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://ges.rgo.ru/jour/article/view/2219

The requirements of the debris flows’ parameters assessments vary from country to country. They are based on different theoretical and empirical constructions and are validated by data from different regions. This makes difficult comparison of the reported results on estimated debris flows activity and extent. The Russian normative documents for the debris flows’ parameters calculations are based on empirically-measured parameters in wide range of geological and climatic conditions at the territory of former USSR, but still not cover all the possible conditions of debris flow formation. An attempt was made to check applicability of the Russian empirical constructions for the conditions of the debris flows formation in Yunnan, China, where unique long-term dataset of debris flows characteristics is collected by the Dongchuan Debris Flow Observation and Research Station. The results show, that in general the accepted in Russia methodology of calculation of the parameters of debris flows of certain probability corresponded well to the observed in Dongchuan debris flows characteristics. Some discrepancies (in the average debris flow depth) can be explained by unknown exact return period of the actually observed debris flows. This allowed to conclude that the presently adopted empirical dependencies based on country-wide (USSR) empirical data can be extrapolated up to the monsoon climate and geological conditions of Yunnan province.

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The authors declare that there are no conflicts of interest present.