Abstract

We analyzed the effect of a sound speed structure near the ocean surface on sound propagation in a deep sound channel in the ocean by ocean acoustic tomography (OAT), using the normal mode theory. The time structure of the received pulse train in the deep sound channel varies according to the sound speed structure near the ocean surface. In the analysis of the inverse problem in OAT, attention must be paid to the sound speed structure near the ocean surface in the ocean area of interest.

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