Journal of Marine Science and Engineering Article Sediment Characteristics and Intertidal Beach Slopes along the Jiangsu Coast, China Yu Kuai 1,* , Jianfeng Tao 2,* , Zaiyang Zhou 1,3 , Stefan Aarninkhof 1 and Zheng Bing Wang 1,4 1 Faculty of Civil Engineering and Geosciences, Delft University of Technology, 2628 CN Delft, The Netherlands;
[email protected] (Z.Z.);
[email protected] (S.A.);
[email protected] (Z.B.W.) 2 College of Harbor, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China 3 State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China 4 Marine and Coastal Systems Department, Deltares, 2600 MH Delft, The Netherlands * Correspondence:
[email protected] (Y.K.);
[email protected] (J.T.) Abstract: Tidal flats play an important role in promoting coastal biodiversity, defense against flood- ing, land reclamation and recreation. Many coastal tidal flats, especially the tide-dominant ones, are muddy. However, the number of studies on the profile shape and surficial sediment distribu- tion of muddy tidal flats is small compared to sandy beaches. Based on high spatial-resolution measurements along the tide-dominant Jiangsu Coast, China, we analyzed the morphology and sediment characteristics of the unvegetated intertidal flats along the Jiangsu Coast. The Jiangsu Coast can be divided into an eroding northern part (north coast) and an accreting southern part (south coast). The beach slope of the north coast shows a southward flattening trend, apart from some outliers related to rocky parts of the coastline. We found alternating very fine and coarse sediment (depending on the local clay content) for different locations along the north coast, which can be explained from consolidation and armoring-induced erosion resistance.