Urban shoreline amplification of storm surge during extreme tropical cyclones: Current and future flood risks
| Project/Area Number |
20K15003
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 25030:Disaster prevention engineering-related
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| Research Institution | Tokyo Institute of Technology (2022-2023)
Kyoto University (2020-2021) |
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Principal Investigator |
ウェッブ エイドリアン 東京工業大学, 理学院, 特任准教授 (00752172)
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| Project Period (FY) |
2020-04-01 – 2025-03-31
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| Project Status |
Granted (Fiscal Year 2023)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | storm surge / coastal flooding / tropical cyclones / meshless model / climate dataset |
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| Outline of Research at the Start |
高潮や高波の対策は、人命や資産を保護する上で重要である。特に、我が国では都市や資産が沿岸域に集中しており、これらのリスクを正確に把握し、リスクの大きさに応じた防護施設を構築することが期待されている。しかし、複雑な形状を持つ都市の沿岸港湾域では、高潮が局所的に増幅されるが、発生メカニズムや発生場所については明らかでない。本研究では、現在気候と将来気候の高潮リスクを詳細に推定するとともに高潮を増幅する沿岸域特性・地形特性を解明することを目的とする。超高解像度の高潮モデルを開発し、国内・国外の沿岸都市を対象に気候変動の影響を考慮した大規模なシミュレーションを行い、リスクを推定する。
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| Outline of Annual Research Achievements |
Please refer to the grant proposal for background details of the project. A high-resolution storm surge model is being developed and coupled with a large-ensemble climate dataset in order to quantify changes in urban flood risk. This research is being conducted in two main phases: modeling and simulation.
Work on Phase 1 (model development) continued in FY2023 in order to investigate the role bathymetry plays in urban storm surge amplification. With the aid of two international experts, work continued on a numerical storm surge prototype of Osaka Bay (using a spatially-flexible finite difference scheme). Parallel work on Phase 2 (ensemble simulation) was paused in FY2022 while improvements are being made to a tropical cyclone dataset (generated in FY2021) used for simulations.
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| Current Status of Research Progress |
Current Status of Research Progress
4: Progress in research has been delayed.
Reason
The research project was scheduled to have concluded in FY2023. However, the principle researcher took maternity leave during FY2023 and research for the project was postponed for six months (2023/8/11-2024/2/13). For this reason, the project was extended one final year and a planned visit by two international collaborators (during the second half of FY2023) was postponed until FY2024.
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| Strategy for Future Research Activity |
The new tropical cyclone track dataset (updated in FY2023) will be used to simulate thousands of flood events under present and future climate conditions to test hypotheses and and generalize results.
Arrangements have been made for two international collaborators (Colorado, USA) to visit the principle investigator during April and May of FY2024. The visit will be used improve the numerical model and prepare a manuscript for publication.
Research progress will also continue to be presented at domestic conferences. In early FY2024, a workshop will be held at Kyoto University to support adoption of meshless numerical methods. In early FY2025, a conference session is being organized to facilitate discussion and collaboration around storm surge and coastal-related hazards in Japan.
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Report
(4 results)
Research Products
(24 results)
