Acoustic Properties of Marine Animals Forming Deep Scattering Layers of the Ocean

Andreeva, I. B.; Tarasov, L. L.
May 2003
Acoustical Physics;May2003, Vol. 49 Issue 3, p263
Academic Journal
Acoustic models are considered for different animals that inhabit the deep scattering layers of the ocean and form a scattered acoustic field. These animals are divided into several groups that differ in their acoustic properties: fish with and without swim bladders, crustaceans, small squids, and other animals whose bodies consist of soft tissues and have no hard or gaseous inclusions. Normalized criteria are chosen for the quantitative comparison of the scattering properties of the animals. For the animals of each group, computational models are presented and analyzed. Generalized curves are constructed for the quantitative comparison of the backscattering cross sections of animals from different groups and of different sizes at different sound frequencies. In addition, these curves allow one to estimate the absolute values and the frequency characteristics of the scattering cross sections of animals for wide frequency and size ranges.


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