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The research on the validity of plan rainfall duration of A-class rivers in Japan
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- Akira Takeshima
- The University of Tokyo, Engineering
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- Yoshimura Kei
- Institute of Industrial Science, The University Tokyo
Bibliographic Information
- Other Title
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- 日本の一級水系における計画降雨継続時間の妥当性に関する検証
Description
When the soil is wet enough, only the rainfall in the flood arrival time affect to the peak discharge. In Japan, plan rainfall duration is too long while flood arrival time is generally short.<br />Firtsly we investigated in the flood arrival time of the upper areas of the discharge observatory in A-class rivers in Japan, and researched the relationship with geographical characteristics; and we revealed that the mean flood arrival time can be represented by the length of river channel. Nextly we compared the flood arrival time and the plan rainfall duration in each basin, and found out that in around 90% basins plan rainfall duration is twice as long as the mean flood arrival time.
Journal
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- Proceeding of Annual Conference
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Proceeding of Annual Conference 30 (0), 40-, 2017
THE JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES
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Details 詳細情報について
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- CRID
- 1390282680690418816
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- NII Article ID
- 130006236292
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
- Crossref
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- Abstract License Flag
- Disallowed
