On the relationships between the radial tidal current field and the radial sand ridges in the southern Yellow Sea: a numerical simulation |
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| Authors: | Yurong Zhu Ruifang Chang |
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| Institution: | Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, P.R. China,
School of Marine and Earth Sciences, Ocean University of Qingdao, Qingdao 266003, P.R. China,
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| Abstract: | The origin of the radial sand ridges (RSRs) in the southern Yellow Sea has been a controversial problem since they were discovered in the early 1960s. To resolve the problem, two key questions need to be answered: (1) was the radial tidal current field in the RSR area generated by the submarine topography, or (2) did it exist before the RSRs occurred? In this study, the M2 tide and tidal currents in the RSR area were simulated with a two-dimensional tidal model using a flat bottom and a shelving slope topography, the results being then compared with the field data. It is demonstrated that the radial tidal current field in the southern Yellow Sea is independent of bottom topography, and may thus be the controlling factor generating the RSRs. The radial tidal current field probably existed before the RSRs were formed. |
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