摘要
本文提出了基于西沃兹信息准则的水文时序方差变点的识别原理和方法,并以广东北江流域为例,对其主要河流的枯期径流量年系列(1957～2000年)进行了变点识别,结果显示1982年为该流域枯期径流时序方差的显著性变点。
This paper introduced variance change-point recognition principle and method for hydrological time series based on the Schwarz Information Criterion. The method was applied to test and locate temporal change-point of dry season runoff in Beijiang River Basin from 1957 to 2000 . The results show that there was a remarkable change-point of dry season runoff time series in 1982.
出处
《水文》
CSCD
北大核心
2008年第3期14-17,共4页
Journal of China Hydrology
基金
国家自然科学基金(50579078)
广东省自然科学基金(04009805)资助
关键词
方差变点
西沃兹信息准则
识别
枯期径流
variance change-point
Schwarz Information Criterion
recognition
dry season runoff
