Figure 3From: Three-dimensional numerical simulation of nonlinear acoustic-gravity wave propagation from the troposphere to the thermospherePerturbations of horizontal velocity (in ms-1). Produced by wave forcing (2) with τ = 2 × 103 s, с x = 100 ms-1 and W0 = 0.3 cm/s at times t = 1 h (a), t = 2 h (b) and t = 5 h (c).Back to article page