The study of tidal propagation the in Huangmaohai Estuary and its underlying mechanisms

GONG Wenping; LIU Huan; REN Jie; YU Hongbing

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GONG Wenping, LIU Huan, REN Jie, YU Hongbing. The study of tidal propagation the in Huangmaohai Estuary and its underlying mechanisms[J]. Haiyang Xuebao, 2012, 34(3): 41-54.

Citation:

GONG Wenping, LIU Huan, REN Jie, YU Hongbing. The study of tidal propagation the in Huangmaohai Estuary and its underlying mechanisms[J]. Haiyang Xuebao, 2012, 34(3): 41-54.

GONG Wenping, LIU Huan, REN Jie, YU Hongbing. The study of tidal propagation the in Huangmaohai Estuary and its underlying mechanisms[J]. Haiyang Xuebao, 2012, 34(3): 41-54.

Citation:

GONG Wenping, LIU Huan, REN Jie, YU Hongbing. The study of tidal propagation the in Huangmaohai Estuary and its underlying mechanisms[J]. Haiyang Xuebao, 2012, 34(3): 41-54.

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The study of tidal propagation the in Huangmaohai Estuary and its underlying mechanisms

1. Center for Coastal Ocean Science and Technology Research, Ocean School, Sun Yat-sen University, Guangzhou 510275, China;
2. South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China

Received Date: 2011-04-14
Rev Recd Date: 2011-06-01

Abstract

Abstract

The Huangmaohai Estuary is located in the southwest of the Zhujiang(Pearl 1) River Delta (ZRD). Tidal propagation in the estuary endures complex variations from the offshore into the inland. Understanding its transformation processes and the underlying mechanisms is of great importance in both theoretical and practical perspectives. The Environmental Fluid Dynamics Code(EFDC) model was utilized and well calibrated by various sources of observation data. After then, the variations of tidal amplitudes and the phase differences between water level and current along its propagation were studied. The impacts of an upstream lock—Heshan Lock and the interaction between the estuary and the ZRD river-network were investigated. The model results clearly indicate that topography, bottom friction and the combination of incident and reflected waves all play important roles in the tidal propagation processes. The existence of Heshan Lock can impose an impact extending up to 100 km. The interaction between the estuary and the ZRD river-network results in a reduction of tidal amplitudes in the estuary. Comparisons among the Modaomen Estuary and the Lingding Bay-Humen-Guangzhou Estuary and the Huangmaohai Estuary demonstrate their unique characteristic.
- Zhujiang River Delta,
- Huangmaohai Estuary,
- tidal propagation,
- EFDC model

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References(23)

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