江河水沙变化突变性与周期性分析方法及比较  

Comparison of analytical methods of runoff and sediment load mutation and periodical variation

作　　者：刘茜[1] 王延贵 

机构地区：[1]北京交通大学土木建筑工程学院,北京100044 [2]国际泥沙研究培训中心,北京100048

出　　处：《水利水电科技进展》2015年第2期17-23,共7页Advances in Science and Technology of Water Resources

基　　金：中国水利水电科学研究院研究专项(沙集1334)

摘　　要：为了更有效地分析江河水沙序列的突变性和周期性变化,在总结现有研究方法的基础上,以长江大通站和宜昌站的水沙变化为例,就江河水沙变化的突变性和周期性分析方法进行了分析与对比。不同方法的原理、计算结果及适用性的对比分析结果表明:有序聚类法计算简便,结果精确,最适用于突变性分析;小波分析法发展成熟,可用于一般的水沙序列周期性的分析计算。To analyze the mutation and periodical variation of runoff and sediment load more effectively,the existing methods are summarized and then a detailed comparison is carried on. The experiment data used comes from the Datong Station and Yichang Station of Yangtze River. By comparing the principle,result and applicability of each method,it is concluded that the sequential cluster method is most suitable for mutation analysis with both simple calculation and accurate result,while the wavelet analysis method is highly developed and recommended for periodical variation analysis.

关 键 词：江河水沙 突变性 周期性 长江 大通站 宜昌站 

分 类 号：TV143[水利工程—水力学及河流动力学]