伊洛河入汇对黄河下游水沙关系的影响分析

发布时间：2018-08-13 08:51

【摘要】：根据小浪底、花园口、黑石关3个水文站近50 a实测径流量与输沙量数据资料,运用交叉小波分析方法,结合交叉小波能量谱、小波凝聚谱和小波功率谱探讨了尹洛河水沙入汇对黄河干流下游水沙的影响。结果表明:(1)黑石关与小浪底径流量在1978-1992年间均具有4~9 a的周期尺度;黑石关站输沙量和小浪底站输沙量相关性不显著;(2)黑石关径流量对花园口径流量有持续稳定的影响,主要体现在1965-1996年的0~9 a的周期尺度上;黑石关输沙量对花园口输沙量有一定影响,主要表现在1958-1970年的4~10 a和1956-1962年的0~6 a的周期尺度上,但影响程度不大。总体而言,伊洛河水沙入汇对黄河下游径流过程影响显著,输沙过程影响不大。
[Abstract]:According to the measured runoff and sediment discharge data of Xiaolangdi, Huayuankou and Heishiguan hydrological stations in recent 50 years, the cross wavelet analysis method is used to combine the cross wavelet energy spectrum. The influence of sediment inflow of Yinluo River on water and sediment in the lower reaches of the main stream of the Yellow River is discussed by wavelet condensation spectrum and wavelet power spectrum. The results showed that: (1) the runoff of Heshiguan and Xiaolangdi had a periodic scale of 4 ~ 9 years from 1978 to 1992, the correlation of sediment transport capacity and sediment discharge of Xiaolangdi station was not significant, (2) the runoff of Heshiguan had a sustained and stable effect on the runoff of Huayuankou. It is mainly reflected in the periodic scale of 0 ~ 9 a from 1965-1996, and the amount of sediment transport at Heshiguan has a certain influence on the sediment discharge at Huayuankou, mainly on the periodic scale of 410 a from 1958-1970 and 06 a from 1956-1962, but the influence is not significant. Generally speaking, the sediment inflow of Yiluo River has a significant effect on the runoff process of the lower Yellow River, but not on the sediment transport process.
【作者单位】：太原理工大学水利科学与工程学院;
【基金】：国家自然科学基金项目(51004120) 山西省青年科技研究基金项目(2013021031-1)
【分类号】：TV14

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