| Inversion Method for Sound Velocity Profile of Eddy in Deep Ocean |
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| 作者单位： | QIU Xiaofang PENG Linhui WANG Ning ZHU JianxiangPhysics Department，Ocean University of Qingdao，Qingdao 266003，China |
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| 摘 要： | The modal wave number tomography approach is used to obtain sound speed profile of water column in deep ocean. The approach consists of estimation of the local modal eigenvalues from complex pressure field and use of these data as input to modal perturbative inversion method for obtaining the local sound speed profile. The empirical orthonormal function (EOF) is applied to reduce the parameter search space. The ocean environment used for numerical simulations includes the Munk profile as the unperturbed background speed profile and a weak Gaussian eddy as the sound speed profile perturbation. The results of numerical simulations show the method is capable of monitoring the oceanic interior structure.
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Inversion Method for Sound Velocity Profile of Eddy in Deep Ocean |
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| Authors: | QIU Xiaofang PENG Linhui WANG Ning ZHU Jianxiang |
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| Abstract: | The modal wave number tomography approach is used to obtain sound speed profile of water column in deep ocean. The approach consists of estimation of the local modal eigenvalues from complex pressure field and use of these data as input to modal perturbative inversion method for obtaining the local sound speed profile. The empirical orthonormal function (EOF) is applied to reduce the parameter search space. The ocean environment used for numerical simulations includes the Munk profile as the unperturbed background speed profile and a weak Gaussian eddy as the sound speed profile perturbation. The results of numerical simulations show the method is capable of monitoring the oceanic interior structure. |
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| Keywords: | modal tomography sound velocity profile inverse empirical orthonormal function |
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