• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Integrated Water Resources Management and Challenges of the Sustainable Development >Experimental Study for the Catchment Rainfall-Runoff Components and its Subsurface Contributions
【24h】

Experimental Study for the Catchment Rainfall-Runoff Components and its Subsurface Contributions

机译：集水区降雨径流组件及其地下贡献的实验研究

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Special designed experimental catchments are constructed aimed at various runoff compositions happened during rainfall events. Surface runoff, subsurface interflow from unsaturated zone and groundwater flow from saturated zone are collected from troughs at different depths of catchment stream, they are physically measured. Instead of the hydrograph with the lumped runoff components as obtained from current experimental catchments, it results of the actual picture of various hydrographs of different runoff components from natural catchments. Several combined types of runoff components are identified as the SR type with surface runoff dominated, SSR type with subsurface runoff dominated and other intermediate types. It shows that surface runoff contributes up to 65% of total runoff for SR type, while the subsurface runoff up to 90% in SSR type. W ater source contribution of surface and subsurface flow are identified mainly by ~(18)O. The total old water involved in event runoff accounts for 11% for the SR type while 64% for SSR type. The results also challenge the assumptions involved in current isotopic hydrograph separation method that the ~(18)O of surface runoff will not always equal to that of event precipitation and, the evaporation fractionation during the pathway of runoff components could not always be ignored.
机译：特殊设计的实验集水区是针对在降雨期间发生的各种径流组合物的构建。表面径流，从饱和区的不饱和区和地下水流的地下交织从饱和区的槽中收集，在不同深度的流域流中，它们被物理测量。而不是从当前实验集液获得的块状径流组件的水文，而是来自自然集水区的不同径流组件的各种水文图像的实际图像的结果。几种组合类型的径流组件被识别为具有曲面径流的SR类型，SSR类型具有地下径流主导和其他中间类型。它表明，表面径流贡献了SR类型的总径流的65％，而SSR类型的地下径流高达90％。表面和地下流动的源源主要贡献主要由〜（18）o识别。事件径流中涉及的总旧水占SR类型的11％，而SSR类型的64％。结果还挑战了当前同位素水文的分离方法所涉及的假设，即表面径流的〜（18）o不会总是等于事件降水的差，并且径流组件途径中的蒸发分馏并不总是忽略。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号