Study of the propagation direction of the internal waves in the South China Sea using satellite images
Study of the propagation direction of the internal waves in the South China Sea using satellite images
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DOI：
10.1007/s13131-013-0312-6
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发表时间：
2013-05-01
影响因子：
1.4
通讯作者：
Zheng Gang
中科院分区：
文献类型：
--
作者：
Wang Juan;Huang Weigen;Zheng Gang
内波传播携带着相当大的垂直切变，这可能导致湍流和混合。通过对2500多幅合成孔径雷达和光学卫星图像的分析，系统地研究了南中国海中国海域的内波传播。结果表明：(1)在南中国海东北部，大部分内波从吕宋海峡向西传播，并被东沙群岛附近的珊瑚礁绕射。在南海中国海的西北部，内波大部分产生在陆架上，并向西北或向西传播到沿岸；(3)在南海中国海的西部，内波大部分向西传播到越南沿海，少数向南传播到深海；(4)在南海中国海南部，内波大部分向西南向传播到沿海。一些向东南传播到加里曼丹岛的海岸，少数由于湄公河的影响向东南传播。
Internal wave propagation carries considerable vertical shear which can lead to turbulence and mixing. Based on the analysis of more than 2 500 synthetic aperture radar (SAR) and optical satellite images, the internal wave propagation in the whole South China Sea was investigated systematically. The results show that (1) in the northeastern South China Sea, most internal waves propagate westward from the Luzon Strait and are diffracted by coral reefs near the Dongsha Islands. Some impinge onto the shelf and a few are reflected; (2) in the northwestern South China Sea, most internal waves are generated at the shelf and propagate northwestward or westward to the coast; (3) in the western South China Sea, most internal waves propagate westward to the Vietnamese coast, except a few propagate southward to the deep sea; and (4) in the southern South China Sea, most internal waves propagate southwestward to the coast. Some propagate southeastward to the coast of Kalimantan Island, and a few propagate southeastward because of the influence of the Mekong River.