Submesoscale processes of suspended sediment front in Zhejiang-Fujian coastal areas in winter
The submesoscale phenomenon is a critical dynamic process in oceanography.Despite its significance,studies detailing the submesoscale dynamics of the suspended sediment front(SSF)in the Zhejiang-Fujian coastal areas are scarce.In this research,high-resolution Geostationary Ocean Color Imager satellite images,with excellent spatial and temporal resolution,and in situ data(surface suspended sediment concentration data and sea surface eddy current data)are used to study the spatial and temporal distributions of SSF and its mesoscale processes.The results revealed that the coastal SSF generally develops in winter,mainly distributed along the 20-25 m isobaths.Significant protruding cross-front sediment transport was observed in the 29°N sea area of northern Zhejiang and the 26°N-27°N sea area of northern Taiwan Island.The submesoscale phenomena in the Zhejiang-Fujian coastal areas are pronounced,mainly characterized by cyclonic vorticity with positive relative vorticity.The SSF moves southward gradually,primarily affected by the southwesterly coastal current generated by northerly winds in winter.Furthermore,winter gale events significantly promote the development of submesoscale processes within the SSF.
万方数据
维普
