Acoustic propagation in the subsurface sound channel

被引:0
|
作者
R. A. Vadov
机构
[1] Russian Academy of Sciences,Andreev Acoustics Institute
来源
Acoustical Physics | 2006年 / 52卷
关键词
43.30.+m;
D O I
暂无
中图分类号
学科分类号
摘要
Experimental data obtained in the kilohertz frequency band for the sound propagation in the subsurface channel formed by the wind-caused mixing of subsurface waters are discussed. The data were obtained in different years in the northeastern region of the Atlantic Ocean, where the subsurface waters down to the depths of 40–70 m are mixed by both wind waves and the swell that arrives from distant ocean areas. The hydrological conditions in the subsurface waters of this region are characterized by a good reproducibility. The spatial structure of the sound field and the attenuation of sound propagating in the subsurface channel are analyzed. The origin of the additional attenuation (in comparison with the absorption in sea water) is discussed. The data of our experiments are compared with those obtained by other experimenters and with the calculations performed using the computer code by Avilov. The necessity of improving the computer codes to allow for the scattering of sound beyond the channel under the influence of the swell, whose parameters are unrelated to the wind regime at the experimental site, is emphasized.
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页码:6 / 16
页数:10
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