IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 6 - MARITIME HYDRAULICS AND COASTAL ENGINEERING : The Importance of the Wind-driven Circulation in the Tidally-driven Malacca Strait
The Importance of the Wind-driven Circulation in the Tidally-driven Malacca Strait
Author : Chen Haoliang, Song Guiting, Koh Tieh-Yong and Paola Malanotte-Rizzoli
The Malacca Strait is traditionally treated as a typical tidally-driven channel with other components of the circulation, such as the wind-driven one, negligible. However, the strait is frequently affected by the variable winds with high intensity and large stress curl due to the intense land-sea breeze distorting the background along-strait monsoon. To answer the question of how significant the wind-driven circulation is on impacting the total circulation, numerical simulations are carried out by separating and superimposing the different driving mechanisms. The results show that ?strong winds? having high intensity and large stress curl can produce a basin-scale eddy which significantly distorts the tidal circulation even during the spring tide. The eddy is purely wind-driven, but its center is shifted southeastward from the deeper to the surface layer by the realistic topography through the bottom pressure torque. The contracted geometry of the strait only has a secondary effect on the circulation. Our study highlights the importance of including the full wind forcing in the predictions of the current circulation in a tidal channel like the Malacca Strait, as accurate predictions are important for local fisheries and navigation.
File Size : 870,431 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Article : THEME 6 - MARITIME HYDRAULICS AND COASTAL ENGINEERING
Date Published : 18/07/2016
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