Numerical Modeling of Seismic and Acoustic-Gravity Waves Propagation in an 'Earth–Atmosphere' Model in the Presence of Wind in the Air

摘要

In this paper, an effective numerical algorithm for 2.5D seismic and acousticgravitational wave propagation is applied to a combined "Earth–Atmosphere" model in the presence of wind in the air. Seismic wave propagation in an elastic half-space is described by a system of first-order dynamic equations of elasticity theory. The propagation of acoustic-gravitational waves in the atmosphere in the presence of wind is described by the linearized Navier–Stokes equations. The algorithm is based on the integral Laguerre transform with respect to time, the finite integral Fourier transform with respect to a spatial coordinate combined with a finite difference method for the reduced problem.