Multiple Time-scale SPA Analysis on Uncertainty Relationship Between Rivers' Runoff Time Series
Multiple Time-scale SPA Analysis on Uncertainty Relationship Between Rivers' Runoff Time Series
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发表时间：
2009
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通讯作者：
Ding Zhihong
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作者：
Ding Zhihong
通过分析小波变换存在的问题，进而分析径流时间序列波动的复杂多时间尺度和不确定性特征，深入分析了河流间年径流时间序列的波动关系，将汾河河津站和沁河武陟站1956 ~ 2000年天然年径流量时间序列分解为多时间序列，用原始经验模态分解（EMD）方法得到不同周期的波动分量，分解结果表明，汾河存在2-4、8、15和40年左右的周期，采用集对分析（SPA）方法对得到的集对进行分析，结果表明，汾河与沁河年径流量波动的关系特征，如同源性和对立性随时间尺度的不同而变化明显，即同源性表现在短时间尺度层次上，差异性表现在中短时间尺度层次上，对立性表现在中长时间尺度层次上。
Through analyzing problem of wavelet transform and then complicated multiple time-scale and uncertainty characteristics of runoff time series fluctuation,to analyze deeply fluctuation relationship of annual runoff time series between rivers,the natural annual runoff time series from 1956 to 2000 of Hejin hydrological station on the Fenhe River and Wuzhi hydrological station on the Qinhe River are decomposed into multiple time-scale series with original empirical mode decomposition(EMD) method to obtain fluctuation components with different periods,the decompositions show that there are about 2—4,8,15,and 40 years periods for Fenhe River and about 2—4,6—8,10—12,and 32 years for Qinhe River.Then set pair analysis(SPA) method is applied to study the resulted set pairs,the results show that the relationship characteristics of annual runoff fluctuations between Fenhe River and Qinhe River,such as homology and opposition,change with different time-scale apparently,namely,the homology is represented through short time scale level,the difference is represented through middle-short time scale level and the opposition is represented through middle-long time scale level.