Determination of ocean bottom sound‐speed profiles using a modal inverse technique in a range‐dependent shallow water environment

1987 ◽  
Vol 82 (S1) ◽  
pp. S122-S122
Author(s):  
George V. Frisk ◽  
James F. Lynch ◽  
Subramaniam D. Rajah
Keyword(s):  
Shallow Water ◽  
Sound Speed ◽  
Water Environment ◽  
Ocean Bottom ◽  
Inverse Technique ◽  
Shallow Water Environment

Influences Analysis of Environmental Parameters on Sound Propagation in Shallow Water

2014 ◽  
Vol 556-562 ◽  
pp. 4815-4819
Author(s):  
Shahabuddin Shaikh ◽  
Yi Wang Huang
Keyword(s):  
Shallow Water ◽  
Sound Speed ◽  
Sound Propagation ◽  
Transmission Loss ◽  
Water Environment ◽  
Environmental Parameters ◽  
Sea Surface ◽  
Water Medium ◽  
Sea Bottom ◽  
Shallow Water Environment

The objectives of this paper are to analyze the effectiveness of parameters on sound propagation in a shallow-water environment. The procedure for calculation of transmission loss is only the method to analyze the influence of environmental parameters. The normal mode approach is carried out for the calculation of transmission loss. And it is conducted in the range independent environment Transmission loss for sound propagation in shallow water depends upon many natural variables such as sea surface, water medium, and sea bottom. Analyses are finalized on the results obtained by considering two types of sound channels. The results indicated that acoustic transmission loss in a shallow-water environment is dependent on the source & receiver depths, sea surface, sound speed profile (SSP) in water, sound speed in bottom, density of water & bottom, propagation range and frequency. It is necessary to mention that better transmission was found during the sound velocity increases with depth; whereas the poor transmission occurred in negative gradient channel.

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