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J. Mar. Sci. Eng. 2018, 6(4), 110; https://doi.org/10.3390/jmse6040110

Impact of Tidal Phase on Inundation and Thrust Force Due to Storm Surge

Institute of Water and Flood Management, Bangladesh University of Engineering and Technology (BUET), Dhaka 1000, Bangladesh
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Received: 3 September 2018 / Revised: 20 September 2018 / Accepted: 20 September 2018 / Published: 28 September 2018
(This article belongs to the Section Physical Oceanography)
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Abstract

Impact of storm surge largely varies depending on the tidal phase during the landfall of a tropical cyclone. This study investigates comparative variance in inundation condition and thrust force for an identical cyclone during low tide and high tide by applying a numerical model (Delft3D) and a semi-analytical model (DFM). A moderate strength cyclone, Mora, which made landfall on Bangladesh coast in May 2017 is selected to study its impact on land during low tide and high tide. Actual landfall time of Mora was during low tide. To study the impact of storm surge during high tide, a synthetic cyclone is created which has similar strength and track to that of Mora but makes landfall during high tide. The results show that inundation depth, inundation extent, and thrust force increase when a cyclone makes landfall during high tide compared to the condition when the cyclone makes landfall during low tide. But the relation between storm surge impact and tidal phase is not linear. It depends on the land topography of the location, direction of cyclone movement, direction and magnitude of water velocity and wind velocity, gradients of water surface and wind velocity, and proximity and position of the location with respect to cyclone track. View Full-Text
Keywords: tropical cyclone; storm surge; tidal phase; inundation; thrust force tropical cyclone; storm surge; tidal phase; inundation; thrust force
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Al Azad, A.S.M.A.; Mita, K.S.; Zaman, M.W.; Akter, M.; Asik, T.Z.; Haque, A.; Hussain, M.A.; Rahman, M.M. Impact of Tidal Phase on Inundation and Thrust Force Due to Storm Surge. J. Mar. Sci. Eng. 2018, 6, 110.

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