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在不远离截止频率时均匀浅海中简正波的衰减系数
唐应吾1
中国科学院声学研究所
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THE ATTENUATION COEFFICIENT OF NORMAL MODES IN HOMOGENEOUS SHALLOW-WATER NEAR THE CUT-OFF FREQUENCY
Abstract:
In this paper, we suggest that the strong inequality |a| >> lb| in kornhonser-Raney’s theory is true as the frequency is far from the cut-off, but not so it the irequency is near the cut-off value. In the latter case, the strong inequality shall be replaced by |a|≥|b|. By means of this new relation we establish the expressions of attenuation of normal modes in homogeneous shallow-water with a "liquid "bottom. The calculated results are in, agreement with that tested.
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