摘要
One of the most important parameters for oceanic internal waves (IWs) is their amplitude. We have developed a method to retrieve the IW amplitude from nautical X-Band radar images based on the KdV equation for continuous stratified finite depth system. We have also tested the method of measuring the amplitude of IWs from X-Band radar backscatter image sequences acquired on June 2009 in the northeastern South China Sea. The method was applied in several radar images. Experiments show that the retrieval amplitudes are consistent with the in-situ observational amplitudes of IWs by using the towed thermistor chain and conductivity-temperature-depth (CTD) profile. The uncertainty of the method is also discussed.
One of the most important parameters for oceanic internal waves （IWs） is their amplitude. We have developed a method to retrieve the IW amplitude from nautical X-Band radar images based on the KdV equation for continuous stratified finite depth system. We have also tested the method of measuring the amplitude of IWs from X-Band radar backscatter image sequences acquired on June 2009 in the northeastern South China Sea. The method was applied in several radar images. Experiments show that the retrieval amplitudes are consistent with the in-situ observational amplitudes of IWs by using the towed thermistor chain and conductivity-temperature-depth （CTD） profile. The uncertainty of the method is also discussed.
基金
Supported by the Knowledge Innovation Program of Chinese Academy of Sciences (No. KZCX-YW-12-04)
the National Natural Science Foundation of China (No. 41030855)
the National High Technology Research and Development Program of China (863 Program) (No. 2008AA09A403)
the Marine Public Welfare Project of China (No. 201105032)
关键词
海洋内波
振幅
雷达观测
X-波段
X波段雷达
提取
图像检索
KDV方程
internal wave amplitude
X-Band radar
nonlinear velocity
remote sensing
radon transform
Brunt-V^iis/il/i frequency
