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DOI | 10.1029/2019WR026943 |
Watershed‐Merging: A Simple and Effective Algorithm for Channel Network Identification and Extraction | |
Yaoxin Zhang; Yafei Jia | |
2020-09-17 | |
发表期刊 | Water Resources Research |
出版年 | 2020 |
英文摘要 | Channel network identification is an important practice in not also hydrologic analysis but also hydraulic computation. In this paper, a new algorithm, watershed‐merging, is proposed to automatically identify and extract channel networks. In the water‐merging algorithm, based on the fact that the sink cell of a dendritic watershed is either a depression cell or a flat cell, a macro scale approach is proposed to treat the depression and flat areas (DAFA) and determine the flow direction within those areas, where the conventional D8 slope calculation fails. The separated neighboring watersheds are merged together using information of neighboring watersheds instead of the D8 cells. This progressive merging process starts from small neighboring watershed to larger ones. The example and applications demonstrated that the proposed watershed‐merging algorithm is effective in resolving the DAFA problems and identifying channel networks. |
领域 | 资源环境 |
URL | 查看原文 |
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文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/295324 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Yaoxin Zhang,Yafei Jia. Watershed‐Merging: A Simple and Effective Algorithm for Channel Network Identification and Extraction[J]. Water Resources Research,2020. |
APA | Yaoxin Zhang,&Yafei Jia.(2020).Watershed‐Merging: A Simple and Effective Algorithm for Channel Network Identification and Extraction.Water Resources Research. |
MLA | Yaoxin Zhang,et al."Watershed‐Merging: A Simple and Effective Algorithm for Channel Network Identification and Extraction".Water Resources Research (2020). |
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