Adiabatic normal‐mode theory of sound propagation including shear waves in a range‐dependent ocean floor
作者:
Juan I. Arvelo,
Herbert Überall,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1990)
卷期:
Volume 88,
issue 5
页码: 2316-2325
ISSN:0001-4966
年代: 1990
DOI:10.1121/1.400074
出版商: Acoustical Society of America
关键词: SOUND WAVES;WAVE PROPAGATION;SEA BED;NORMAL−MODE ANALYSIS;RANGE;SHEAR WAVES;BOUNDARY CONDITIONS
数据来源: AIP
摘要:
A normal‐mode model, including absorptive effects and elastic waves in the ocean floor, is presented for a source in the water column and a receiver in the water or the elastic medium. The appropriate boundary conditions between all liquid and solid layers are taken into account, and an absorptive semi‐infinite basement is assumed, which causes the radiating wave‐number spectrum to be discrete. The adiabatic approach has been adopted for the case where the acoustic properties or the boundaries vary slowly with range. Results of these calculations display the importance of even a slight range dependence, and of bottom elasticity in shallow‐center sound propagation.
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