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Joint geoacoustic inversion based on Pearson correlation coefficient constraints
Jiaqi Ding1, Xiaofeng Zhao1, Pinglv Yang1
1College of Meteorology and Oceanography, National University of Defense Technology, Changsha, 410073, Chinadingjiaqi@nudt.edu.cn, zhaoxiaofeng@nudt.edu.cn, ypl@nudt.edu.cn.
Abstract:
This Letter proposes a joint geoacoustic inversion method for modal group velocity dispersion and amplitudes of waveform by incorporating a Pearson correlation constraint. Numerical simulations show that this joint inversion leads to improved geoacoustic inversion performance with smaller uncertainties compared to separate inversion methods when applied to data from a single receiver. Additionally, the effective use of the Wasserstein metric from optimal transport theory is explored and compared to the more-common L2 norm misfit measure. The Letter also presents a qualitative representation of joint inversion convergence obtained through multiple independent runs of genetic algorithms. The algorithm is applied to simulated data.
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