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Article

An Analytical Solution for Investigating the Characteristics of Tidal Wave and Surge Propagation Associated with Non-Tropical and Tropical Cyclones in the Humen Estuary, Pearl River

by 1,2, 1,2,*, 1,2 and 1,2
1
Key Laboratory of Virtual Geographic Environment, Nanjing Normal University, Ministry of Education, Nanjing 210023, China
2
Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China
*
Author to whom correspondence should be addressed.
Academic Editors: Tony Wong and Vivek Srikrishnan
Water 2021, 13(17), 2375; https://doi.org/10.3390/w13172375
Received: 1 June 2021 / Revised: 24 August 2021 / Accepted: 24 August 2021 / Published: 29 August 2021
The Humen Estuary, one of the largest outlets of the Pearl River, is a long and wide tidal channel with a considerable tidal flow every year. Storm surges, always superposing spring tide, travel from the estuary and endanger the safety of people living around the river. However, little research has quantified the relationship between the hydraulic characteristics and the geometry features in this estuary. In this regard, an analytical model, combined with a numerical model, is applied to investigate the characteristics of tidal waves and surge propagations in the estuary. Given the geometric, topographic, and tidal parameters at the mouth of the estuary, the tidal damping and wave celerity can be computed. The numerical results were used to calibrate and verify the analytical model. The results indicate that the analytical model can describe the astronomical tidal dynamics very well in correspondence with the numerical results. However, the analytical model cannot predict the tide well when a tropical cyclone-induced surge is superimposed on the astronomical tide. The reason is that this model does not take the wind stress and the pressure depression into account. After reducing Manning’s coefficient, we found that the analytical results could be close to the numerical results. Finally, we analyzed the characteristics of the tidal wave in the Humen Estuary using the analytical solution and its parameters. View Full-Text
Keywords: tidal damping; wave propagation; analytical model; surge; pearl river tidal damping; wave propagation; analytical model; surge; pearl river
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MDPI and ACS Style

Zhang, Z.; Guo, F.; Hu, D.; Zhang, D. An Analytical Solution for Investigating the Characteristics of Tidal Wave and Surge Propagation Associated with Non-Tropical and Tropical Cyclones in the Humen Estuary, Pearl River. Water 2021, 13, 2375. https://doi.org/10.3390/w13172375

AMA Style

Zhang Z, Guo F, Hu D, Zhang D. An Analytical Solution for Investigating the Characteristics of Tidal Wave and Surge Propagation Associated with Non-Tropical and Tropical Cyclones in the Humen Estuary, Pearl River. Water. 2021; 13(17):2375. https://doi.org/10.3390/w13172375

Chicago/Turabian Style

Zhang, Zhuo, Fei Guo, Di Hu, and Dong Zhang. 2021. "An Analytical Solution for Investigating the Characteristics of Tidal Wave and Surge Propagation Associated with Non-Tropical and Tropical Cyclones in the Humen Estuary, Pearl River" Water 13, no. 17: 2375. https://doi.org/10.3390/w13172375

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