Abstract
Based on investigating river distribution, coastal type and shallow sea topography from multi-temporal high-resolution satellite remote sensing images, distinguishing tidal current field forms and diffusing characteristics of suspended sediments from flood-tide time and ebb-tide time temporal images, and utilizing sea charts of different periods, this paper has analyzed the bed load and its movement regularity as well as scouring-silting trend of Tong'an bay in Xiamen. The results show that the natural shore of Tong'an bay has been mostly replaced by artificial coast, that the bed load movement trend of the bay is in anticlockwise circumfluent direction, and that the beach and tidal channels are undergoing slow scouring-silting evolution with the driving factors being mainly tidal current and subordinately runoff. Since the formation of the artificial coast, the terrigenous bed load has not exerted remarkably influence on the sea area.
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