Effect of the Geoacoustic Parameters on the Range-Frequency Interference in Shallow-Water Waveguide

概要

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In this study, range-frequency interference is analyzed in the propagation of acoustic waves in shallow-water waveguides. The interference pattern is examined using image processing techniques to produce the waveguide-invariant parameter $\beta$. The variability of the $\beta$-distributions of four geoacoustic parameters in a sediment layer and four typical sediment types is characterized by skewness and kurtosis. The result shows that a low value of skewness and a high value of kurtosis appear in the hard-sediment case and a high value of skewness and a low value of kurtosis appear in the soft-sediment case. This analysis technique will be useful in geoacoustic parameter inversion.
2010-10-25