Modeling of the Thermospheric Effect of a Tsunami Wave in a Multilayered Atmosphere

— The atmospheric gas disturbance effect is modeled using the problem of the cutoff mode of the propagation of an acoustic wave. The atmosphere is approximately described as a 1D multilayer with an exponential density structure in each layer. The cutoff mode determining the propagation direction is defined at the layer boundaries and at the water–air interface. The relationship between atmospheric parameters (pressure, density, and velocity) is found using projection operators on the z -evolution operator subspace for each layer. As a result, we obtain the spectral composition of the acoustic disturbance of the atmosphere at any height, including ionospheric altitudes, which can be used to calculate ionospheric effects.