The characteristic acoustic impedance is a favorable observation variable for geoacoustic inversion (GI) owing to its higher sensitivity than that of pressure or particle velocity. However, no theoretical explanations have been provided for it. As an attempt to understand the underlying physical mechanism, interpretations based on the normal mode theory are conducted in this study. Moreover, synthetic Bayesian geoacoustic inversion with two recording scenarios of a vertical line array and single receiver are also performed, both of which proved that the impedance can provide improved estimation.

中文翻译：

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用于可靠环境表征的特征声阻抗

特征声阻抗是地声反演（GI）的有利观测变量，因为它比压力或粒子速度具有更高的灵敏度。然而，尚未对其提供理论解释。作为理解潜在物理机制的尝试，本研究基于正常模式理论进行了解释。此外，还进行了具有垂直线阵列和单个接收器两种记录场景的合成贝叶斯地声反演，两者都证明了阻抗可以提供改进的估计。