3D-calculation of internal gravity waves from the non-local sources of disturbances

A problem of numerical calculation of internal gravity waves from the non-local sources of disturbances in stratified medium is considered. The effective numerical methods of analysis of the multidimentional integrals based on Fylon modified method, which allows using the special substitutions of variables to calculate efficiently the fast-oscillating integrals having the special points and the numerical algorithms for solution of the fundamental spectral problems of the equation of the internal gravity waves.