2022 Fiscal Year Research-status Report
Urban shoreline amplification of storm surge during extreme tropical cyclones: Current and future flood risks
| Project/Area Number |
20K15003
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| Research Institution | Tokyo Institute of Technology |
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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 – 2024-03-31
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| Keywords | storm surge / coastal flooding / tropical cyclones / meshless model / climate dataset |
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| Outline of Annual Research Achievements |
Complex urban shorelines can amplify storm surge from extreme tropical cyclones in ways that are different from natural coasts. The purpose of this research is to identify main properties that amplify storm surge and better understand present and future flood risks that urban coastal communities face. 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 FY2022 with the assistance of two international experts. A prototype with a spatially-flexible finite difference numerical scheme was used to investigate the role bathymetry plays in urban storm surge amplification in Osaka Bay. Parallel work on Phase 2 (ensemble simulation) continued in FY2022. A dataset generated in FY2021 was used to analyze changes in extreme tropical cyclone events and how they might affect coastal flooding in the target areas.
Research results from this project were presented at both domestic and international venues. An international conference session was organized in Japan in early FY2022 to facilitate discussion on the research topic and to encourage international collaboration. The conference included domestic and international speakers, both early-career and established. In addition, results of Phase 2 were presented at the Institute for Mathematical and Statistical Innovation (USA) during a three-month workshop, and at Argonne National Laboratory in Chicago (USA).
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| Current Status of Research Progress |
Current Status of Research Progress
3: Progress in research has been slightly delayed.
Reason
COVID-19 travel restrictions in FY2022 prevented two international collaborators from visiting Japan during the summer of 2022. This hindered collaboration some and model development progressed slower than was anticipated during FY2022. However, a new collaboration with another international expert that began in FY2022 is helping speed up planned simulations in FY2023.
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| Strategy for Future Research Activity |
The new tropical cyclone track dataset (that was generated in FY2021) will be used to simulate thousands of flood events under present and future climate conditions to test hypotheses and and generalize results.
We are currently making plans to host 1-3 international collaborators during FY2023. Part of this visit will be used to help write up the results for publication.
And finally, research progress will continue to be presented at domestic and international conferences. As such, another domestic conference session is being organized in early FY2024 to facilitate discussion and collaboration in Japan around storm surge and coastal-related hazards.
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| Causes of Carryover |
Funding has been set aside to host international collaborators in FY2023 for previous planned visits that were cancelled due to COVID-19 travel restrictions. Additional funding will also be used to help pay for publication costs.
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Research Products
(8 results)
