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Extraction of internal wave amplitude from nautical X-Band radar observations |
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| Authors: | Guozhen?Zha Mingsen?Lin Hui?Shen |
| Institution: | ZHA Guozhen 1, 2, 3, LIN Mingsen 4, SHEN Hui 1, 2, HE Yijun 5, 2, 1, **, Lü Haibin 1, 2 1 Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China 2 Key Laboratory of Ocean Circulation and Waves, Chinese Academy of Sciences, Qingdao 266071, China 3 Graduate University of Chinese Academy of Sciences, Beijing 100049, China 4 National Satellite Ocean Application Service, Beijing 100081, China 5 School of Marine Sciences, Nanjing University of Information Science and Technology, Nanjing 210044, China |
| Abstract: | 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. |
| Keywords: | internal wave amplitude X-Band radar nonlinear velocity remote sensing radon transform Brunt-Vislfrequency |
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