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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.

JASA Express Letters
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Summary
This summary is machine-generated.

This study introduces a joint geoacoustic inversion method using Pearson correlation for improved accuracy. The technique enhances geoacoustic inversion performance and reduces uncertainties, outperforming separate methods.

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Area of Science:

  • Ocean acoustics
  • Geophysical inversion

Background:

  • Geoacoustic inversion is crucial for understanding the seafloor.
  • Existing methods often have limitations in accuracy and uncertainty quantification.

Purpose of the Study:

  • To develop and validate a joint geoacoustic inversion method.
  • To improve the performance and reduce uncertainties in geoacoustic inversion.

Main Methods:

  • Joint inversion of modal group velocity dispersion and waveform amplitudes.
  • Incorporation of a Pearson correlation constraint.
  • Exploration of the Wasserstein metric and comparison with the L2 norm.

Main Results:

  • The joint inversion method demonstrates improved performance with smaller uncertainties compared to separate inversion.
  • Numerical simulations validate the effectiveness of the proposed method.
  • Qualitative representation of joint inversion convergence using genetic algorithms.

Conclusions:

  • The proposed joint geoacoustic inversion method offers enhanced accuracy and reduced uncertainty.
  • The Wasserstein metric shows potential as a robust misfit measure.
  • The method is effective for analyzing simulated acoustic data.