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General Session 1: Physical oceanic processes: Dynamics and physical-biological-biogeochemical interactions |
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Storm surge modelling in the Bay of Bengal: A review
GS1-26-S
Nabir Mamnun* , Nansen-Bangladesh International Centre for Coastal, Ocean and Climate Studies (NABIC), Dhaka, Bangladesh
Presenter Email: nabir.mamnun@gmail.com
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| The Bay of Bengal is a breeding ground of tropical storms, which are called cyclones. In the Bay of Bengal, cyclones occur either during pre-monsoon or during post-monsoon seasons with sever intensity and accompanied by storm surges. Storm surges are the fluctuations in water level generated during the passage of low pressure systems (LPS) caused by tropical or extra-tropical cyclones, over a coastal or inland water body which can last up to a few days. The most severe coastal damage tends to result from short-lived extreme flooding events, whose characteristics are likely to alter in the future as a result of both increases in mean sea level and changes in storm-surge activity. The damages caused by storm surges in the countries of Bay of Bengal rim. Therefore, simulations of storm surge prediction of the Bay of Bengal is of great importance. For decades, the numerical model-based storm surge prediction systems have been developed and proved to be an important tool to reduce the loss of human lives and property damage caused by storms. In order to improve the accuracy in predicting storm surge and coastal inundation, recent model development efforts tended to include more modelling components, such as meteorology model and surface wave model, and use more complete 3D primitive hydrodynamic equations in storm surge modelling. Providing the governance equation of storm surge I attempt an up-to-date review of storm surge modelling in the Bay of Bengal. The future directions of numerical storm surge modelling and prediction system were also assessed. |
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