Abstract
In the late summer of 1996, a joint China–USA experiment was performed in the central area of the Yellow Sea. The analysis of the data from thermistor string and CTD reveals that (1) there was intense internal wave activity in the experimental area, and the isotherm displacement induced by internal waves could be as large as 8 m; (2) the power spectrum of the vertical displacement had a significant peak near the M2 tide frequency, and was approximately proportional to ω−3/2; and (3) the internal wave field was dominated by first-order modes. Based on the observed properties of the internal waves, a model of the induced sound-speed distribution is developed, and computer simulations are conducted for cw and wideband signal propagation by using the PE method. Numerical results are presented for comparison with the experimental data. [Work supported by NNSF of China and ONR of USA.]
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