Nonlinear acoustic wave propagation in the waveguide formed by the bottom bubble layer

The formation of the benthic acoustic waveguide in the presence of the liquid layer containing suspended gas bubbles is investigated. Evolution equations describing the propagation of intense sound in the bubble layer at oblique incidence on its border are set up. It is shown that the layer with bubbles effectively captures acoustic waves and creates conditions for their waveguide propagation. The evolution equation is derived for describing acoustical field along the waveguide axis which works correctly at focal areas.