桂林理工大学学报2016，Vol.36Issue(4)：688-692,5.DOI:10.3969/j.issn.1674-9057.2016.04.007
西江梧州站枯季径流变化的小波多尺度分析
Wavelet multi-scale analysis of dry season runoff changes of Wuzhou station in Xijiang River
摘要
Abstract
Based on data of Wuzhou station in Xijiang fiver from 1954 to 2013,regression analysis was used to identify the trend of dry season runoff,spring runoff and December runoff.Mann-Kendall rank correlation test was used to do significant tests for trend changing.Morlet wavelet function was used to study the cycle and mutation point in different time scales.On the whole,the results show that in dry season runoff and spring runoff there is no obvious rise,but in December runoff there is obvious rise.The periods of dry season runoff series are 6,10,17 and 31 years.The periods of spring runoff series are 2,6,10 and 19 years.The periods of December runoff series are 2,5,10,17 and 37 years.The mutation points of dry season runoff series are 1961,1969,1978,1987,1995,2003 and 2011.The mutation points of spring runoff series are 1959,1965,1970,1976,1981,1986,1991,1996,2001,2006 and 2011.The mutation points of December runoff series are 1961,1969,1978,1987,1995,2003 and 2011.关键词
枯季径流/小波分析/多尺度分析/趋势变化/梧州站/西江Key words
dry season runoff/wavelet analysis/multi-scale analysis/trend changing/Wuzhou station/Xijiang River分类
天文与地球科学引用本文复制引用
朱颖洁..西江梧州站枯季径流变化的小波多尺度分析[J].桂林理工大学学报,2016,36(4):688-692,5.基金项目
广西自然科学基金项目(桂科基0991026) （桂科基0991026）
广西水利厅科技项目(201618) （201618）
广西重点实验室科研项目(桂科能0701K019) （桂科能0701K019）
