An integrated algorithm to evaluate flow direction and flow accumulation in flat regions of hydrologically corrected DEMs

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• 作者：Hongming Zhang^a ; Zhihong Yao^b ; Qinke Yang^c ; Shuqin Li^a ; Jantiene E.M. Baartman^d ; Lingtong Gai^a ; ^d ; Mingtian Yao^a ; ^d ; Xiaomei Yang^a ; ^d ; ^{xiaomei.yang@wur.nl} ; ^{zhm@nwsuaf.edu.cn} ; Coen J. Ritsema^d ; Violette Geissen^d
• 关键词：Flow direction ; Flat area ; Flow accumulation ; Channel networks ; Hydrology
• 刊名：CATENA
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：151
• 期：Complete
• 页码：174-181
• 全文大小：1731 K
• 卷排序：151

文摘

An integrated method to calculate flow direction and flow accumulation is proposed. This new method is faster than obtaining these two characteristics separately. The method results in a flow accumulation for flats without problematic flow lines. A maze algorithm with the weight considered to find the main flow path