| 流量过程线的自动分割方法探讨 |
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| 引用本文： | 黄国如.流量过程线的自动分割方法探讨[J].灌溉排水学报,2007,26(1):73-78. |
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| 作者姓名： | 黄国如 |
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| 作者单位： | 华南理工大学,土木工程系,广东,广州,510640 |
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| 基金项目： | 教育部跨世纪优秀人才培养计划
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国家自然科学基金
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南京师范大学地理信息科学江苏省重点实验室开放基金
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武汉大学校科研和教改项目 |
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| 摘 要： | 为了确定出稳定可靠的流量过程线分割方法,以东江流域中的13个子流域为例,对现行广泛使用的滑动最小值法、HYSEP法和滤波法等自动基流分割方法进行较为深入的探讨。研究结果表明这3类方法的分割结果并不一致,有些情况下差距较大,同时也表明滤波法可以得到较为稳定的基流系数BFI,尤其是第3种滤波法可能为最优的基流分割方法。由于流域空间特征值与BFI之间的相关关系较为密切,利用逐步回归方法构建了这二者之间的相关关系,利用该关系可以由流域的空间特征值推求出无资料地区的基流系数BFI。
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| 关 键 词： | 基流分割 滑动最小值法 HYSEP法 滤波法 东江流域 |
| 文章编号： | 1000-646X（2007）01-0073-06 |
| 修稿时间： | 2006-05-30 |
Base Flow Separation from Daily Flow Hydrograph Using Automated Techniques |
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| HUANG Guo-ru.Base Flow Separation from Daily Flow Hydrograph Using Automated Techniques[J].Journal of Irrigation and Drainage,2007,26(1):73-78. |
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| Authors: | HUANG Guo-ru |
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| Institution: | Department of Civil Engineering, South China University of Technology, Guangzhou 510640, China |
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| Abstract: | This paper presents an evaluation of several automated techniques concerned with base flow separation.Three type and eight base flow separation methods are considered,one based on simple smoothing separation rules,three on USGS computer method,and other four on digital filters.Comparisons show that the results of all three types methods are not very different,the results also indices that the digital filters provide a more stable estimation of BFI(base flow index).A preliminary examining of relationship between BFI and physical characteristics of the basins shows that index can be used as a basin characteristic,and it can be calculated from flow data or estimated from basin geology. |
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| Keywords: | base flow separation smoothed minima technique HYSEP method recursive digital filters Dongjiang basin |
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