基于等价地貌参数的地貌单位线确定方法

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英文篇名：Study on Method of Using Equivalent Geomorphologic Indices to Establish GIUH 作者：陈颖冰 ; 石朋 ; 胡健伟 ; 瞿思敏 ; 王建金 ; 戴韵秋 ; 肖紫薇 ; 陈星宇 英文作者：CHEN Ying-bing;SHI Peng;HU Jian-wei;QU Si-min;WANG Jian-jin;DAI Yun-qiu;XIAO Zi-wei;CHEN Xing-yu;College of Hydrology and Water Resources,Hohai University;State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hohai University;Bureau of Hydrology,MWR; 关键词：无资料地区 ; 汇流计算 ; GIUH ; 等价地貌参数 ; 海南中小流域 英文关键词：region without data;;calculation of flow concentration;;GIUH;;equivalent geomorphologic indices;;little basins in Hainan Province 中文刊名：SDNY 英文刊名：Water Resources and Power 机构：河海大学水文水资源学院;河海大学水文水资源与水利工程科学国家重点实验室;水利部水文局; 出版日期：2017-05-25 出版单位：水电能源科学 年：2017 期：v.35;No.201 基金：国家自然科学基金项目(51479062,40901015);; 中央高校基本科研业务费专项资金项目(2015B14314) 语种：中文; 页：SDNY201705005 页数：3 CN：05 ISSN：42-1231/TK 分类号：24-26

摘要

针对传统地貌单位线计算过程中地貌参数的获取在很大程度上受到面积阈值的影响,进而造成单位线不唯一的问题,从而影响汇流计算的精确度。为解决此问题,提出一种与面积阈值无关的等价地貌参数及其相应的地貌单位线计算方法,并将该方法应用于海南省中小流域,采用具有资料的定安河流域进行验证,将模拟径流与实测数据进行对比。结果表明,基于等价参数计算出的地貌瞬时单位线(GIUH)能较好地适用于流域的汇流计算。
        In the process of traditional geomorphologic instantaneous unit hydrograph(GIUH)computation,the extraction of geomorphologic parameters is influenced by the area threshold to some extent,which leads to the uncertainty of GIUH.Therefore,it affects the accuracy of computing runoff flow concentration.In order to overcome these drawbacks,this paper introduces a method utilizing some parameters independent of the area threshold and its equivalent geomorphologic indices for calculating the unit hydrograph(UH).And this approach was applied to the basin in Hainan Province,and it was verified by means of the measured data in Ding'an basin.Compared with the simulated and observed runoff data,the results show that the GIUH computed by equivalent geomorphologic indices is fit for the calculation of watershed runoff flow concentration.

引文

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