嘎呀河流域径流量的时间变化研究

Study on the time variation of runoff in Gaya river basin

以图们江流域嘎呀河1956—2015年水文序列资料为基础,利用累积距平法、Pettitt检验法等方法,分析此时间段内该河水文突变情况;然后通过对河流序列进行水文时序分析和小波分析,得到该河水文序列的状态.研究表明:嘎呀河流域水文序列存在突变的年份为1985、1995、2002年和2012年,水文序列的突变周期为5年.

Based on the hydrological sequence data of Gaya river in Tumen river basin from 1956 to 2015,this paper analyzed the hydrological abrupt change of the river during this time period by means of the cumulative distance method and the Pettitt method,and then analyzed the hydrological sequence of the river series.And through the analysis of hydrological time series and wavelet analysis on river hydrological sequence,we get sequence state of Gaya river.The research shows that the years of abrupt change of the hydrological sequence in the Gaya river Basin are 1985,1995,2002 and 2012,and the period of abrupt change of the hydrological sequence in the river basin is 5 years.