Three-dimensional ray simulation of sound propagation in ocean with a geostrophic current

被引：1

作者：

Tsuchiya, T ^{[1
]}

Ohtsuka, E ^{[1
]}

Fujii, T ^{[1
]}

Endoh, N ^{[1
]}

机构：

[1] Kanagawa Univ, Fac Engn, Dept Elect Engn, Yokohama, Kanagawa 221, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1998年 / 37卷 / 5B期

关键词：

acoustical ray theory; 3-D transmission characteristics; the geostrophic current; ocean acoustical tomography;

D O I：

10.1143/JJAP.37.3148

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Acoustical ray theory is used to analyze the three-dimensional (3-D) transmission characteristics of the propagation of sound in the Pacific Ocean. For the computer simulation, it is assumed that there is a temperature gradient caused by the warm and cold water mass. The temperature gradient also generates a non-acceleration current or the geostrophic current. The maximum nom speed of the current varies from 0 to 1.35 m/s in the area of. study of 100 km square. Sound pulses projected from the source on the sound fixing and ranging (SOFAR) axis reach the cylindrical receiving plane with a curved locus, because of the influence of both temperature gradient and current. The propagation path and propagation time are more affected than shown by the estimation results by two-dimensional (2-D) simulation.

引用

页码：3148 / 3151

页数：4

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