Long-range sound propagation in the Greenland Sea

被引：5

作者：

Vadov, RA ^{[1
]}

机构：

[1] Russian Acad Sci, NN Andreev Acoust Inst, Moscow 117036, Russia

来源：

ACOUSTICAL PHYSICS | 2000年 / 46卷 / 01期

关键词：

D O I：

10.1134/1.29844

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Experimental data on the long-range sound propagation in the Greenland Sea, in the presence of a well-defined underwater sound channel, are analyzed. A strong spatial variability of the propagation conditions is observed for the 350-km propagation path. This variability manifests itself in the reduced t/N-R/N diagram as noticeable deviations of the time structure of signals received at distances longer than 100 km from the time structure formed at the 100-km part of the path next to the reception point. At the distance about 100 km from the reception point, a local drop (by 3-5 dB) in the sound field level is observed along with changes in the shape of the terminal part of the received signals. The changes are related to the polar hydrological front, which crosses the propagation path at this distance. The experimental data are used to estimate the sound attenuation coefficient and its frequency dependence. (C) 2000 MAIK "Nauka/Interperiodica".

引用

页码：37 / 48

页数：12