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首页> 外文会议>Annual Meeting of Risk Analysis Committee of China Association for Disaster Prevention >Spatiotemporal Variations of Hydrologic Extremes and Response to Extreme Precipitation in Xiang River Basin
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Spatiotemporal Variations of Hydrologic Extremes and Response to Extreme Precipitation in Xiang River Basin

机译：湘河流域的水文极端天空变化和对极端降水的反应

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Trends of streamflow and water level extremes are significant indicators reflecting the risk of floods and droughts. The study on trends of hydrologic extremes can provide references for water resource management and flood risk analysis. Based on Mann-Kendall test, this article detected existing trends in extreme streamflow and water level in the Xiang River basin that are most afflicted by frequent and severe floods. Subsequently, continuous wavelet transform method was employed to identify the consistency of changes in extreme precipitation and streamflow. The results show that no significant trends can be detected in annual discharge extremes in Xiang River basin, but the summer high flows show positive trends in the most area of upper and middle river basin. The results of wavelet transform analysis illustrate that highly similar patterns of signal changes can be seen between extreme precipitation and streamflow in upper and middle section of the basin, while the changes in extreme precipitation for the lower reaches do not always coincide with the extreme streamflow.
机译：物流流量和水位极端的趋势是反映洪水和干旱风险的重要指标。水文极端趋势研究可以为水资源管理和洪水风险分析提供参考。基于Mann-Kendall测试，本文检测到翔河流域的极端流流量和水位的现有趋势，这些潮流频繁和严重洪水最令人作呕。随后，采用连续小波变换方法来识别极端沉淀和流出的变化的一致性。结果表明，在湘河流域的年排放极值中没有检测到显着的趋势，但夏季高流动展示了上层河流域大部分地区的积极趋势。小波变换分析的结果说明了盆地的上部和中间部分的极端降水和流流之间的高度相似的信号变化模式，而下游的极端降水的变化并不总是与极端流流程一致。

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