Features determining compensation of counter energy flows in acoustic fields of the ocean

Autor:	E. S. Tkachenko, V. P. Kouleshov, E. N. Ivanov, V. A. Shchurov
Rok vydání:	2010
Předmět:	Phase difference Physics Superposition principle Acoustic field Acoustics and Ultrasonics Acoustics Coherence (signal processing) Sound pressure
Zdroj:	Acoustical Physics. 56:1089-1096
ISSN:	1562-6865 1063-7710
DOI:	10.1134/s1063771010060357
Popis:	The phenomenon of compensation of counteracoustic energy flows in the ocean was studied using the example of superposition of acoustic fields of a moving vessel and of the surface noise of a tropical shower using combined receivers at depths of 150 and 500 m. We demonstrate that comparison of the z-component of the spectrum of function of simple one-point coherence or the z-component of the cross-spectrum with the spectrum of phase difference between the acoustic pressure and the z-component of the vibrational speed is sufficient for unambiguous determination of the process of compensation. The criteria are the “dips” of the coherence function in a frequency range, common to these fields, which correspond to the jumps of the phase difference by ± (π/2).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::699b671cd24807f6e00f87bc65c4983d https://doi.org/10.1134/s1063771010060357 Zobrazit plný text záznamu Plný text ve formátu PDF