Home page of the Russian Acoustical Society Proceedings of the X Session of the Russian Acoustical Society
 
Ocean Acoustics

N.N Galybin, L.L. Tarasov, and V. Ya. Tolkachev
SPATIAL DISTRIBUTION OF DEEP SCATTERING LAYER COLUMN STRENGTHS OVER THE ATLANTIC OCEAN
N.N. Andreev Acoustics Institute
ul. Shvernika 4, Moscow, 117036 Russia
Phone (095)126-9052; Fax: (095) 126-8411;
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On the basis of the computer database developed by the authors for the parameters of ocean deep scattering layers (DSL), a map is newly obtained for the spatial distribution of the DSL column strengths over nearly entire deep-water Atlantic Ocean, at frequencies 3, 5, 7, 15, and 20 kHz, in light time of the day. Two methods of mapping are used: based on calculating the isocurves for the column strengths and on standard statistical processing of data sets which can be attributed to probably uniform ocean regions. For each sound frequency, the ocean area is divided into several zones that involve hydrologically uniform regions, the mean column strengths in adjacent zones being significantly different. It is shown that the zone boundaries can be not identical for different sound frequencies.