ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa


Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2009. Issue.6. Vol.1. P. 314-321

Characteristics of volume sound scattering variability in sub-satellite oceanic experiments

А.В. Березуцкий , В.Е. Скляров 
Институт океанологии им. П.П. Ширшова РАН, 117851 Москва, Нахимовский проспект, 36
Combined analysis of oceanic experiments made in different parts of the North Atlantic, Arctic seas of
Russia and in the Pacific sector of the Antarctic showed the existence of significant mesoscale and
finestructure variability of volume sound scattering at depth of 0-2500 m in the frequency band of 10-150
kHz. Acoustic measurements were combined with data of satellite observations in the IR and visible spectral
ranges (NOAA satellites). In addition, data of hydrologic measurements from a board of research vessels were
also used for the analysis. As a result of the numerous sub-satellite field experiments it was revealed that the
main mechanisms which dominantly influenced on the volume sound scattering variability were the
peculiarities of ocean dynamics at depths of acoustic measurements. The influence of oceanic fronts dynamics
connected with the oceanic currents and streams as well as open ocean eddies and near shore upwellings were
investigated. A role of topographic factors in the region of North Polar Frontal Zone and an influence of
Intermediate Atlantic Waters on the field of volume sound scattering were also revealed.
Keywords: acoustic sensing, volume sound scattering, fine structure, meso-scale and synoptic variability
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