Analysis of fluvial process based on information entropy

被引：0

作者：

机构：

[1] State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University

来源：

Xu, G. (xuguob@sina.com) | 1600年 / Tianjin University卷 / 46期

关键词：

Fluvial process; Information entropy; Reaches in the lower Yellow River; Weight;

D O I：

10.11784/tdxb20130410

中图分类号：

学科分类号：

摘要：

By adopting the theory and methods of information entropy, the factor information entropy concept and the year information entropy concept of the fluvial process were proposed, and the formula was provided to quantitatively analyze the fluvial process. Taking six reaches in the lower Yellow River as study areas, the objective weights of various factors for the fluvial process and the year information entropy of each reach were determined with influencing factors of each reach within the year range from 1972 to 2000. The results show that the width to depth ratio which can reflect the relative mobility of the composition of riverbank and riverbed material is the maximum influencing weight for the fluvial process; the influence of river boundary conditions on the fluvial process is greater than that of incoming flow and sediment conditions. The sequence of the year information entropy of the six reaches is Hua-Jia reach, Jia-Gao reach, Gao-Sun reach, Sun-Ai reach, Ai-Luo reach and Luo-Li reach, which shows that the instability of the river increases with the increase in the value of the year information entropy of a river; it is verified that the chaos of the system increases with the increased value of information entropy of a system.

引用

页码：347 / 353

页数：6

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