Research PaperNo Access

Characteristic Acoustic Impedance for Reliable Environmental Characterization

Key Laboratory of Underwater Acoustic Environment, Institute of Acoustics, Chinese Academy of Sciences, No. 21, North 4th Ring Road, Haidian District, 100190 Beijing, P. R. China

E-mail Address: renqunyan@mail.ioa.ac.cn

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Yaxiao Mo

Key Laboratory of Underwater Acoustic Environment, Institute of Acoustics, Chinese Academy of Sciences, No. 21, North 4th Ring Road, Haidian District, 100190 Beijing, P. R. China

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Li Ma

Key Laboratory of Underwater Acoustic Environment, Institute of Acoustics, Chinese Academy of Sciences, No. 21, North 4th Ring Road, Haidian District, 100190 Beijing, P. R. China

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Shengming Guo

Key Laboratory of Underwater Acoustic Environment, Institute of Acoustics, Chinese Academy of Sciences, No. 21, North 4th Ring Road, Haidian District, 100190 Beijing, P. R. China

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, and

Tianjun Liao

State Key Laboratory of Complex System Simulation, Beijing Institute of System Engineering, 10010 Beijing, P. R. China

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https://doi.org/10.1142/S2591728518500548Cited by:0 (Source: Crossref)

Abstract

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.

Keywords:

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