AI Article Synopsis
- Simple models of normal mode propagation in coastal oceans are created to analyze how seafloor shapes affect the timing of sound traveling through water.
- The study reveals that variations in the underwater landscape can alter how sound waves behave, which helps to differentiate acoustic signals using a technique called time-warping.
- It concludes that overlooking horizontal refraction due to moderate seafloor slopes can significantly skew estimates of underwater sound speed and other acoustic properties.
Article Abstract
Simple, analytically solvable models of normal mode propagation in the coastal ocean are developed and applied to study the effect of the seafloor bathymetry on modal travel times. Within the adiabatic approximation, horizontal inhomogeneity of the waveguide is found to change the modal dispersion curves in a way that helps separation of the modal components of the acoustic field using the time-warping transform. It is shown that moderate seafloor slopes can lead to surprisingly large errors in retrieved geoacoustic parameters and cause a positive bias in bottom sound speed estimates if horizontal refraction is ignored.
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| http://dx.doi.org/10.1121/1.5125270 | DOI Listing |
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