DIAGNOSTIC ASSESSMENT OF COMPOUND FLOODING BY STORM SURGES AND RIVER FLOODS IN JAPAN’S THREE MAJOR BAYS BASED ON d4PDF PROJECTION
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- TOYODA Masaya
- 豊橋技術科学大学 建築・都市システム学系
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- MORI Nobuhito
- 京都大学 防災研究所
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- TANAKA Tomohiro
- 京都大学大学院 工学研究科
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- YOROZU Kazuaki
- 京都大学 防災研究所
Bibliographic Information
- Other Title
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- アンサンブル気候予測データd4PDFを用いた三大湾における複合氾濫の診断的評価
Abstract
<p> The present and future compound coastal flooding risk by storm surges and river floods at the river mouth of Japan’s three major bays was diagnostically evaluated based on the d4PDF climate projection. The number of extreme cases in which large storm surges and large river discharges occur by the same typhoon tends to increase slightly in the future. On the other hand, the time difference between the peak storm surge and the peak river discharge in the future climate tended to shorten by about 0.7 hours. In addition, such shortening of storm surges and river flood peaks will be significant for the rivers with the larger time difference under the present climate. The future changes in peak-time shortening are caused by the shortening of the start of the flow to the maximum flow. Finally, the relationship between drainage area and the peak time difference was examined for the top 10 cases of high river discharge in each river. The results showed that the variability of each case tended to decrease in the future. This result suggests that storm surge and flood peaks will likely overlap even when the typhoon track is not the worst.</p>
Journal
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- Japanese Journal of JSCE
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Japanese Journal of JSCE 79 (17), n/a-, 2023
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390579454815184256
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- ISSN
- 24366021
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
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- Abstract License Flag
- Disallowed