2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/106461We construct a special asymptotic solution for the forced Boussinesq equation. The perturbation is small and oscillates with a slowly varied frequency. The slow passage through the resonance generates waves with the finite amplitude. This phenomenon is described in details.LaTeX, 11 pages, 1 figurePattern Formation and Solitonstext