黄海沿岸河口过程类比

COMPARATIVE STUDIES OF ESTUARIES BORDERING THE YELLOW SEA

本文通过对黄海沿岸几个主要河口的水文、泥沙和沉积特性的综合研究表明,黄海两岸河口的来水来沙条件和海洋动力条件有显著差异,使两岸的河口处在不同发育阶段,从而形成了不同的河口类型和对黄海沉积作用的不同贡献。长江河口的南移、黄河口的北徙以及一些河口建闸,改变了黄海沉积物冲淤分布的格局,也导致了黄海沉积速率的减缓。

There are distinct differences between rivers entering the Yellow Sea on its east coast and that on the west coast. Relative to rivers on the east coast (Korea), rivers on the west coast (China) have large water discharges and large sediment loads, but small tidal ranges. Because of these factors, the estuaries on the west side have reached a much more advanced stage of evolution, and have low filtering efficiencies. Chinese rivers make much greater contributions of sediment to the Yellow Sea than do the Korean rivers. The southward shifting of the Chang-Jiang River Estuary, and the northward shifting of the Huanghe River Estuary into Bohai Sea since 1855, have resulted in a net reduction of sediment input to the Yellow Sea.