CAJ | 학술논문

利用雅鲁藏布江干流奴下水文站1956～2008年实测径流序列资料,采用Morlet小波分析雅鲁藏布江干流径流年际变化和季节性变化的多时间尺度演变规律,揭示了不同尺度下径流变化周期.结果表明:雅鲁藏布江流域年径流和各季节径流存在8～10 a左右时间尺度的丰枯交替,表现出明显的周期特征,其次14～16 a左右时间尺度的周期特征也较明显.研究还发现,雅鲁藏布江夏季径流量占年径流量的53.62%,夏季径流变化趋势与年径流具有较大相似性,不同时间尺度的周期特征之间有不同程度的吻合,说明夏季径流较大程度的控制着年径流.
이용아로장포강간류노하수문참1956～2008년실측경류서렬자료,채용Morlet소파분석아로장포강간류경류년제변화화계절성변화적다시간척도연변규률,게시료불동척도하경류변화주기.결과표명:아로장포강류역년경류화각계절경류존재8～10 a좌우시간척도적봉고교체,표현출명현적주기특정,기차14～16 a좌우시간척도적주기특정야교명현.연구환발현,아로장포강하계경류량점년경류량적53.62%,하계경류변화추세여년경류구유교대상사성,불동시간척도적주기특정지간유불동정도적문합,설명하계경류교대정도적공제착년경류.
Based the measured runoff data from1956 to 2008 of the NuXia hydrological station in Yarlung Zangbo River Basin,Morlet wavelet analysis was introduced and applied to analyze the spatial structure and the multi-time scale characteristics of seasonal and annual runoff .The periodic oscillation of runoff variation changed at different time scales along the time series. The result shows that there are obvious periodic oscillation of 8～10 a and 14～16 a for both seasonal and annual runoff variation.At the same time,the result also shows that the summer runoff accountes for 53.62% of the annual runoff .The variation trend of summer runoff is similar with that of the annual runoff and both of them have the comparable main periods.