Statistical characteristics of phase front dislocation of determinate acoustic field in a waveguide

Statistical characteristics of phase front dislocation arising under the conditions of waveguide sound propagation in the ocean, are studied. Expressions for the density of dislocations with different charge sign, the total charge density of dislocations and the mobility of dislocations in vertical and horizontal directions are obtained for a monochromatic field. The mobility characterizes dislocations motion caused by the disturbance of propagation parameters. Estimations in the order of value are performed and numerical data on dislocations statistical characteristic distribution in a homogeneous waveguide height are given. An analytical relation between dislocations charge density and medium velocity of acoustic field phase alteration along the horizontal coordinate is established. The results are of interest for the interpretation of phase measurements in the ocean and planing for underwater sound propagation experiments.