2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/85765We propose a new phenomenology of the generation of internal transport barriers, based on the exact periodic solution of the Flierl-Petvishvili equation. We examine the stability of this solution and compare the late stages of the flow with the ensemble of vortices.Latex 62 pages, including 30 eps figuresPlasma PhysicsAtmospheric and Oceanic Physicstext