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Improved modeling of the role of mangroves in storm surge attenuation
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2021
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Source: Estuarine, Coastal and Shelf Science, 260, 107515
[PDF-8.29 MB]
Details:
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Journal Title:Estuarine, Coastal and Shelf Science
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Description:Mangroves have been proven to be effective in storm surge attenuation but it remains an important challenge to accurately quantify such bio-shielding effects using numerical simulations, as it is very difficult to comprehensively represent the ecological characteristics of mangroves at both large and small scales. In this study, a numerical method is developed and implemented in the Coastal and Estuarine Storm Tide (CEST) model in order to investigate the attenuation effect of mangroves on storm surge. This numerical method employs an improved drag force formula, which involves the development of new abstract tree models and use of a landscape scale data map of mean mangrove tree height for the study area. The storm surge observed in the South Florida mangrove zone caused by Hurricane Wilma (2005) is used to verify the numerical model. The numerical results indicate a maximum surge of approximately 4.3 m, and a decay rate of peak storm surge height of approximately 18 cm/km across the areas with a mixture of mangrove islands and open water, and nearly 24 cm/km through areas with dense mangrove forest.
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Source:Estuarine, Coastal and Shelf Science, 260, 107515
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ISSN:0272-7714
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Rights Information:Accepted Manuscript
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Compliance:Library
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