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Proceedings Paper

Subcatchment extraction and runoff simulation utilizing satellite remote sensing data
Author(s): Fumio Shinihara; Cheng Wang; Qiuwen Zhang; Keigo Arai; Hidehiro Nozawa; Tatsuo Yamaoka
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Paper Abstract

In the fields of flood hazard prediction and water resource management, subcatchments and their parameters play very important roles because they are needed for almost all analyses and simulations related to rivers. However, they are prepared by field surveys in usual cases, so they have not yet been prepared for mountainous or deep forest areas difficult to survey, or they are not so accurate although they have been already prepared for those areas. In addition, such kinds of field surveys spend much time and costs, so it seems stalled to prepare subcatchments and their parameters with high accuracy in those areas. In this research, we developed the methods to extract subcatchments and their parameters from satellite remote sensing data. Our method to extract subcatchments needs only DEM obtained by satellite remote sensing, without any field surveys, so we can extract subcatchments anywhere if only DEM exists for there. Topographical parameters of extracted subcatchments are calculated also only from DEM. Using surface data obtained by multi band optical sensor, landcover is determined. These methods will enhance the preparation of subcatchments' parameters for mountainous or deep forest area. As a practical way to use of those extracted parameters, we developed a runoff simulation program too. It simulates draining discharges, using the extracted parameters above and some other parameters. By the simulation for past runoff, with fitting algorithm, it can correct parameters into more suitable.

Paper Details

Date Published: 30 November 2005
PDF: 8 pages
Proc. SPIE 5985, International Conference on Space Information Technology, 59850E (30 November 2005); doi: 10.1117/12.659397
Show Author Affiliations
Fumio Shinihara, Huazhong Univ. of Science and Technology (China)
Information and Science Techno-System Co. Ltd. (Japan)
Cheng Wang, Huazhong Univ. of Science and Technology (China)
Qiuwen Zhang, Huazhong Univ. of Science and Technology (China)
Keigo Arai, Information and Science Techno-System Co. Ltd. (Japan)
Hidehiro Nozawa, Information and Science Techno-System Co. Ltd. (Japan)
Tatsuo Yamaoka, Information and Science Techno-System Co. Ltd. (Japan)


Published in SPIE Proceedings Vol. 5985:
International Conference on Space Information Technology
Cheng Wang; Shan Zhong; Xiulin Hu, Editor(s)

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