V. A. Shchurov1 J. R. Wu2 V. P Kouleshov1 H. S. Tkachenko1 N. Ivanov3 

(1 V.I. Il'ichev Pacific Oceanological Institute, Far Eastern Branch, Russian Academy of Sciences Russia )

(2 Key Lab. of Underwater Acoustics Environment, Institute of Acoustics, Chinese Academy of Sciences)

(3 Adm. G.I. Nevel'skoy Marine State University 690059, 50a, Verkhneportovaye St., Vladivostok, Russia )

Received May 5, 2009

Revised Oct. 27, 2009

Abstract In measuring acoustic field vector properties either complete or partial cancellation between ambient noise energy flux and the oppositely directed one, radiated, for instance, by tone or noise-shaped point source can be found. In that case there is no matter coherent or incoherent fields interact. The phenomenon of interest is named compensation of opposing energy fluxes. The paper is focused on interaction between vertical component of the surface noise energy flux and that of bottom-reflected noise-shaped interfering signal from on-water source in the deep opean ocean. Between-reflected weak broadband interfering signal measures the extent of results compensation. As the vertical projection of the signal energy flux makes the interaction maximum, its power appears to be comparable to that of the surface noise and complete compensation takes place at a given frequency. Once it is the interference minimum, just partial compensation can be found. No compensation was observed for co-directional energy fluxes.

PACS numbers: 43.30, 43.60