Abstract

The Port of Jingtang is located between two estuaries on the north side of the Bohai Sea, the Daqinghe Estuary and the Luanhe Estuary. The adjacent coastline of the port is NE~SW orientation, along with nearshore bars and lagoons. The main component of coast materials is fine sand. Sediment transport on the coastal area is relatively active. Due to the sediment coming from the Luanhe River decreased shapely, longshore transport resulted in erosions along the downdrift coastline. As a remote sensing media, satellite images can record the shore line positions and the nearshore bar shapes. Such images were used to analysis evolution of the coastline near the port, and to further study the sediment transport characteristics and the reason of siltation in the access channel. Comparisons of the images in different time showed that the offshore sides of the bars retreated, while the outlines of the bars shifted southwestward, which indicated that the longshore transport was from northeast to southwest.

Keywords: Port of Jingtang, remote sensing, coastal evolution, sediment transport