黄河中游水沙变化关系不确定性的时间尺度特征研究  

Study on temporal scale features of relationship uncertainty between variations of runoff and sediment in Mid-Yellow River

作　　者：张永[1,2] 丁志宏[3] 何宏谋[3] 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]水利部水利水电规划设计总院,北京100120 [3]黄河水利科学研究院水资源研究所,河南郑州450003

出　　处：《水利水电技术》2010年第1期18-21,共4页Water Resources and Hydropower Engineering

摘　　要：针对河川径流与泥沙变化所具有的复杂多时间尺度性和其间变化关系的复杂不确定性，为深入研究黄河中游水沙变化关系在不同时间尺度上的表现，以三门峡水文站为例，首先应用EMD方法对该站1919～1995年的年径流量和年输沙量时序分别进行多时间尺度分解，得到一系列相应的具有不同周期的波动分量，在此基础上，运用SPA方法对基于不同分解水平和时间尺度而得到的集对进行了分析。结果表明，黄河中游年径流量和年输沙量时序之间变化关系的不确定性具有显著的时间尺度特征，即二者之间的同、异、反特性在不同的时间尺度上具有明显的差异。In view of the complicated muhi-temporal scale characteristics of the variations of runoff and sediment and the complicated uncertainty of the relationship between the variations therein, the temporal series of the annual runoff and sediment from 1919 to 1995 taken from Sanmenxia Hydrological Station is decomposed, by taking the station as the study case, with the applica- tion of EMD method at first for the deep study on the representation of the relationship between variations of runoff and sediment in the Mid-Yellow River on various temporal scales; from which a series of relevant fluctuation components with different periods is obtained. On the basis of this, the set pairs is obtained with SPA method based on various decomposed horizontal and temporal scales. The results show that the uncertainty of the relationship between variations of the runoff and sediment in the Mid-Yellow River has a significant feature of the temporal scale, i.e. the similar, different and counter characteristics between both of them have distinct diversities on various temporal scales.

关 键 词：黄河中游 径流 泥沙 不确定性 多时间尺度 

分 类 号：TV142[水利工程—水力学及河流动力学]