An Investigation of the Effects of Internal Waves on Sound Propagation in a Stratified Medium with a Sloping Bed

Autor:	H. Deldar, A. A. Bidokhti, V. Chegini
Rok vydání:	2018
Předmět:	Slope angle Acoustics and Ultrasonics Oscillation Sound propagation Mechanics Internal wave 01 natural sciences Signal 010305 fluids & plasmas Cylinder (engine) law.invention Acoustic wave propagation law 0103 physical sciences 010301 acoustics Geology Sound wave
Zdroj:	Acoustical Physics. 64:58-63
ISSN:	1562-6865 1063-7710
Popis:	Internal waves usually cause temporal and spatial changes of density and consequently affect the acoustic wave propagation in the ocean. The purpose of this study is a laboratory investigation of the effects of internal waves generated by oscillation of a cylinder in a large stratified glass tank with a sloping bed on the sound waves propagation. Results showed that sound waves are affected by internal waves that depend on the slope angle to the direction of internal wave propagation angle ratio. When the ratio is subcritical or supercritical, the acoustic signal is much reduced as compared to the case with no sloped bottom. This can be explained in terms of the internal waves energy reaching the sloped bed and their reflections.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::47b2da2af62424f82ca80f380cbf5767 https://doi.org/10.1134/s1063771018010049 Zobrazit plný text záznamu Plný text ve formátu PDF