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Internal wave‐induced azimuthal fluctuations in the acoustic field

 

作者: Cecile Penland,  

 

期刊: The Journal of the Acoustical Society of America  (AIP Available online 1984)
卷期: Volume 76, issue S1  

页码: 93-94

 

ISSN:0001-4966

 

年代: 1984

 

DOI:10.1121/1.2022105

 

出版商: Acoustical Society of America

 

数据来源: AIP

 

摘要:

In describing the effects of internal waves on acoustic normal modes excited by a time‐harmonic point source, all previous descriptions have neglected the existence of azimuthal fluctuations in the acoustic field. This study compares this azimuthally symmetric case with the case where azimuthal fluctuations in the acoustic field are taken into account. Although azimuthal variations enhance the randomization of interference effects so that different depth modes decorrelate more quickly in range, this enhancement is generally small. The mean energy flux vector (j) becomes radial at long ranges; the vertical components of (j) decay somewhat more quickly with range when azimuthal fluctuations are considered than when they are neglected. [Work supported by Office of Naval Research.]

 

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