基于小波分析的丹江口水库水文年度入库径流变化特征  

Variation Characteristics of the Danjiangkou Reservoir Hydrological Annual Runoff Based on the Morlet Wavelet

作　　者：郑晓东[1,2] 鲁帆[1] 严登华[1] 李彦军[2] 王利娜[1,2] 何鹏[1,2] 

机构地区：[1]中国水利水电科学研究院水资源所,北京100038 [2]河北工程大学,河北邯郸056038

出　　处：《水科学与工程技术》2011年第2期1-3,共3页Water Sciences and Engineering Technology

基　　金：国家重点基础研究发展计划课题(2010CB951102);"十一五"国家科技支撑计划(2006BAB04A07);中国水科院科研专项项目(资集1001)

摘　　要：根据丹江口水库运行调度的实践,采用Morlet小波函数,对丹江口水库水文年度、汛期和非汛期的径流时间序列进行小波分析,揭示了丹江口水库入库径流多时间尺度的复杂结构,并分析了不同尺度下径流序列的周期变化和突变点。研究结果表明:水文年度、汛期、非汛期入库径流序列都存在9,20,40,50a的主要周期,并且水文年度入库径流与汛期径流具有相似的周期演变特征。研究成果可供丹江口水库运行调度参考。According to the practice needs of Danjiangkou reservoir operation scheduling,the morlet wavelet analysis was used on the hydrological annual runoff,the flood runoff and the dry runoff time series.The morlet wavelet analysis reveal more complex structure of time scales of the Danjiangkou reservoir,and analyzes the runoff cycle and mutation points of different scale runoff series.The results show that time series of the hydrological annual runoff,the flood runoff and the dry runoff have four main cycles of 9,20,40,50 years,and the hydrological annual runoff and the flood runoff have similar cycle evolution characteristics.The results are reference for operation scheduling of the Danjiangkou reservoir.

关 键 词：MORLET小波 丹江口水库 水文年度 径流变化特征 

分 类 号：TV211.1[水利工程—水文学及水资源]