Author(s): Chang He; Zhenyu Yin; Alessandro Stocchino; Wing-Hong Wai
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Abstract: Hong Kong (HK), located downstream of the Pearl River Estuary (PRE), intends to conduct reclamation works to ease the great need for land. Dredging processes during land reclamation projects can release a large amount of sediment and strike the balanced ecosystem with high suspended sediment concentration (SSC). Sediment which already absorbed various pollutants from PRE, such as nutrients and toxicants, could desorb pollutants back into the marine system around HK. It is essential to understand the sediment transport under a highly energetic coastal circulation with massive macro-vortices around HK waters and evaluate the local sediment concentration and its residence time during the dredging processes to protect the local ecosystem.
Year: 2022