An Investigation into the Effect of Dredging on Tidal Asymmetry at the River Murray Mouth

2010 ◽  
Vol 265 ◽  
pp. 843-850 ◽  
Author(s):  
Lisa H. Colby ◽  
Stuart D. Maycock ◽  
Frances A. Nelligan ◽  
Hilary J. Pocock ◽  
David J. Walker
Keyword(s):  
2005 ◽  
Vol 215 ◽  
pp. 1062-1067 ◽  
Author(s):  
André B. Fortunato ◽  
A. Oliveira

2000 ◽  
Vol 105 (C11) ◽  
pp. 26237-26251 ◽  
Author(s):  
Cynthia N. Cudaback ◽  
David A. Jay
Keyword(s):  

2020 ◽  
Vol 232 ◽  
pp. 106481 ◽  
Author(s):  
Samiran Mandal ◽  
Sourav Sil ◽  
Avijit Gangopadhyay ◽  
Basanta Kumar Jena ◽  
Ramasamy Venkatesan

Author(s):  
Yoshihiro Mazda ◽  
Nobuyuki Kanazawa ◽  
Eric Wolanski
Keyword(s):  

2016 ◽  
Vol 66 (5) ◽  
pp. 637-658 ◽  
Author(s):  
Wenping Gong ◽  
Henk Schuttelaars ◽  
Heng Zhang
Keyword(s):  

2020 ◽  
Author(s):  
Vera Fofonova ◽  
Alexey Androsov ◽  
Lasse Sander ◽  
Ivan Kuznetsov ◽  
Felipe Amorim ◽  
...  

<p> </p><p>The study is dedicated to the tidal dynamics in the Sylt-Rømø Bight with a focus on the non-linear processes. The FESOM-C model was used as the numerical tool, which works with triangular, rectangular or mixed grids and is equipped with a wetting/drying option. As the model’s success at resolving currents largely depends on the quality of the bathymetric data, we have created a new bathymetric map for an area based on recent studies of Lister Deep, Lister Ley, and the Højer and Rømø Deep areas. This new bathymetric product made it feasible to work with high resolution grids (up to 2 m in the wetting/drying zone). As a result, we were able to study the tidal energy transformation and the role of higher harmonics in the domain in detail. The tidal ellipses, maximum tidally-induced velocities, energy fluxes and residual circulation maps were constructed and analysed for the entire bight. Additionally, tidal asymmetry maps were introduced and constructed. The full analysis was performed on two grids with different structures and showed a convergence of the results as well as fulfillment of the energy balance. The tidal residual circulation and asymmetric tidal cycles largely define the circulation pattern, transport and accumulation of sediment and the distribution of bedforms in the bight, therefore the results are necessary and useful benchmarks for further studies in the area, including baroclinic and sediment dynamics investigations.</p>


2020 ◽  
Author(s):  
Guo Wenyun ◽  
Song Dehai ◽  
Guo Leicheng ◽  
Ge Jianzhong ◽  
Ding Pingxing ◽  
...  

<p>Tides always behaves different rising and falling durations, which can mostly attribute to the shallow-water effect and interactions among tidal constituents. The duration asymmetry may lead to an inequality in flood/ebb tidal current magnitudes, affecting the net sediment transport. Tidal duration asymmetry has time-dependent characteristics. We deducted a general framework for identifying the time-variability in tidal duration asymmetry. The application to the global tides showed that the fortnightly variability in tidal asymmetry is universal and that duration asymmetry can be stronger during neap tide than during spring tide. Then the framework is applied to the tides in the Changjiang Estuary. Prominent seasonal variation in tidal asymmetry is revealed, mainly relate to the river-tide interaction. Application to the tides in the Yangshan Harbor sea area revealed that the local-scale tidal asymmetry can be changed strongly by a large coastal engineering.</p>


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