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- W4212950566 abstract "Indian coastline is endangered by tropical cyclones every year. When these cyclones come closer to a coast, the sea level rapidly rises in the near shore region, where, the strong cyclonic winds blow towards the coast. This combined phenomenon can persist for few hours to few days which often become most destructive force as experienced in the past. This natural phenomenon known as storm surge can neither be modified nor prevented and it causes irreparable damage to life and property. The prediction of the magnitude of such cyclonic storm surges helps us to alert the disaster management personnel to articulate their activities and help the people in the coastal cities and villages to take necessary precautions. Shallow Water Equations (SWE) are the basic framework on which many real time predictions and mitigations of the aforementioned extreme hydrodynamic events could be explained and various approaches exist for solution of SWEs, mostly depending on the requirement of the problem In this paper, a hybrid Finite Volume (FV) and Finite Element (FE) based solver, which can efficiently use the depth adaptive unstructured gridding, is developed. The hybrid solver, is set up to simulate the real-time storm surge of cyclone Amphan, a Super Cyclone (SC), which made landfall over West Bengal coast, along east coast of India, on 20th May 2020. This cyclone was categorized as Very Severe Cyclonic Storm (VSCS) with wind speed close to 45 m/sand a moving wind speed of 7.5m/s approximately. Initially the model is calibrated and validated for a typical bathystrophic storm tide case and the hydrodynamic parameters like wind friction, bottom friction and eddy viscosity coefficients are attunedt The wind stress component of the calibrated numerical model is integrated with a semi-empirical cyclone model that is capable of reproducing the characteristics of cyclone Amphan. Such idealized cyclonic winds are validated with the real-time measured wind data and the final set up is used to predict the surge. The predicted surge due to cyclone Amphan, has been compared with the field measurements and the accuracy of the hybrid SWE model is evaluated." @default.
- W4212950566 created "2022-02-24" @default.
- W4212950566 creator A5061307083 @default.
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- W4212950566 date "2021-09-20" @default.
- W4212950566 modified "2023-09-26" @default.
- W4212950566 title "Prediction of storm surge due to Super Cyclone Amphan using a Hybrid Finite Volume and Finite Element based SWE solver" @default.
- W4212950566 doi "https://doi.org/10.23919/oceans44145.2021.9705787" @default.
- W4212950566 hasPublicationYear "2021" @default.
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