|
|||||
|
|
Hack's law of debris-flow basins |
|
| Authors: | LI Yong YUE Z Q LEE C F BEIGHLEY R E CHEN Xiao-Qing HU Kai-Heng CUI Peng Assoc Prof Key Laboratory of Mountain Hazards Surface Process |
| Institution: | LI Yong1,YUE Z. Q.2,LEE C. F.3,BEIGHLEY R. E.4,CHEN Xiao-Qing5,HU Kai-Heng6,, CUI Peng7 1 Assoc. Prof.,Key Laboratory of Mountain Hazards , Surface Process,Institute of Mountain Hazards , Environment,Chinese Academy of Sciences,Chengdu 610041,China 2 Dr.,Department of Civil Engineering,The University of Hong Kong,Pokfulam Road,Hong Kong,China 3 Prof. Department of Civil Engineering,China 4 Director,Soil Erosion Research Laboratory,As... |
| Abstract: | Hack's law was originally derived from basin statistics for varied spatial scales and regions.The exponent value of the law has been shown to vary between 0.47 and 0.70,causing uncertainty in its application.This paper focuses on the emergence of Hack's law from debris-flow basins in China.Over 5,000 debris-flow basins in different regions of China with drainage areas less than 100km2 are included in this study.Basins in the different regions are found to present similar distributions.Hack's law is derived fi'om maximum probability and conditional distributions,suggesting that the law should describe some critical state of basin evolution.Results suggest the exponent value is approximately 0.5.Further analysis indicates that Hack's law is related to other scaling laws underlying the evolution of a basin and that the exponent is not dependent on basin shape but rather on the evolutionary stage.A case study of a well known debris-flow basin further confirms Hack's law and its implications in basin evolution. |
| Keywords: | Debris-flow basins Hack's law Scaling laws Basin evolution |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |