NONLINEAR INTERNAL WAVE STUDY IN THE SOUTH CHINA SEA
NONLINEAR INTERNAL WAVE STUDY IN THE SOUTH CHINA SEA
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DOI：
10.1142/9789812702128_0022
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发表时间：
2005-11
期刊：
影响因子：
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通讯作者：
Antony K. Liu;Yunhe Zhao;M. Hsu
中科院分区：
文献类型：
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作者：
Antony K. Liu;Yunhe Zhao;M. Hsu
利用ERS-1/2、RADARSAT和航天飞机合成孔径雷达（SAR）的数百幅图像，编制了南海东北部内波分布图。根据卫星数据绘制的地图，波峰可长达200公里，振幅可达100米。在最近的亚洲海洋国际声学实验（ASIAEX）中，在南海东北部大陆架断裂区周围部署了大量系泊设施。在现场测试期间，同时收集了RADARSAT SAR图像，与系泊、船上传感器和CTD铸件的原位测量相结合。除了提供天气信息外，卫星图像对跟踪内波、定位地表锋面和中尺度特征也非常有用。环境参数是根据ASIAEX地区附近大量CTD铸件数据计算出来的。非线性内波模型被应用于SAR和系泊数据的整合和同化。研究了大内波在陆架断裂、高程孤子和波-波相互作用下的滩化、转向和耗散。
The internal wave distribution map in the northeast part of South China Sea (SCS) has been compiled from hundreds of ERS-1/2, RADARSAT and Space Shuttle Synthetic Aperture Radar (SAR) images. Based on the map compiled from satellite data, the wave crest can be as long as 200 km with amplitude of 100 m. In recent Asian Seas International Acoustics Experiment (ASIAEX), extensive moorings have been deployed around the continental shelf break area in the northeast of South China Sea. Simultaneous RADARSAT SAR images have been collected during the field test to integrate with the in-situ measurements from moorings, ship-board sensors, and CTD casts. Besides providing synoptic information, satellite imagery is very useful for tracking the internal waves, and locating surface fronts and mesoscale features. Environmental parameters have been calculated based on extensive CTD casts data near the ASIAEX area. Nonlinear internal wave models have been applied to integrate and assimilate both SAR and mooring data. The shoaling, turning, and dissipation of large internal waves on the shelf break, elevation solitons, and wave-wave interaction have been studied.