Physical processes and sediment dynamics in the Pearl River
Physical processes and sediment dynamics in the Pearl River
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DOI：
10.1007/1-4020-3655-8_9
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发表时间：
2006-01-01
期刊：
影响因子：
--
通讯作者：
Guan, Weibing
中科院分区：
文献类型：
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作者：
Dong, Lixian;Su, Jilan;Guan, Weibing
珠江流域总面积4.5105平方公里，年均流量万立方米-1，是中国南部最长的河流。它通过八条支流(其口在中文中被称为盖茨)排放到南海中国(南海)。四个东门，即虎门门、角门门、红旗里门和横门门，将珠江流量的一半左右直接排入伶俐阳湾，在本节中称为“珠江口(PRE)”(图1)。前海面积2000多平方公里，有两条深水航道，分别被大屿山和内龄丁岛隔开。东航道通过妈湾湾和香港水域连接沿海海洋，西航道穿过大屿山西侧和内龄丁岛。这两条深水道在前河上游的虎门门附近汇合。除深水航道和外岛周围水域水深在20-30m之间外，Pre大部分都很浅，水深在2-10m之间(图1)。Pre是中国南部最重要的河口。河口最早的水文研究始于19世纪50年代的S，现代综合水动力研究始于20世纪70年代的S，这些研究的结果，包括潮汐、环流、水和悬沙通量，由徐(1985)和赵(1990)总结。这些早期的研究大多局限于内林丁岛的上游一侧。自20世纪90年代S以来，我国开展了多项大型河口环境综合研究项目。
The Pearl River, with a total drainage area of 4.5105 km2 and an annual average discharge of 10,000 m3s-1, is the longest river in southern China. It discharges into the South China Sea (SCS) through eight distributaries (whose mouths are called Gates in Chinese). The four eastern Gates, namely, Humen Gate, Jiaomen Gate, Hongqili Gate and Hengmen Gate, discharge about half of the discharge of the Pearl River directly into the Lingdingyang Bay, called “the Pearl River Estuary (PRE)” in this section (Figure 1). The PRE, with an area of over 2000 km2, has two deep channels separated by Lantau Island and the Neilingding Island. The east channel connects the coastal ocean through Mawan bay and Hong Kong waters and the west one passes through the west side of the Lantau Island and Neilingding Island. The two deep channels merge near the Humen Gate at the upper reach of the PRE. Except for the deep channels and the areas around the outer islands where the water depth varies between 20 and 30 m, most of the PRE is quite shallow with a water depth between 2 and 10 m (Figure 1).The PRE is the most important estuary in southern China. The earliest hydrology study of the estuary was initiated in the 1850’s and modern comprehensive hydrodynamic studies started in the 1970's. Results of these studies, including tides, circulation, water and suspended sediment fluxes, are summarized by Xu (1985) and Zhao (1990). These early studies are mostly limited to the upstream side of the Neilingding Island. Since the 1990’s, several large comprehensive estuarine environmental research projects have been conducted in the PRE.