Pont Trencat: la seqüència sísmica de 1427-1428 a la Vall de la Valira

(ENG) Pont Trencat: The 1427-1428 earthquake sequence at the Valira Valley, Southeastern Pyrenees: Geological evidences from a landslide at "Pont Trencat" locality dated from the fifteenth century, could be linked to the 1427-1428 catastrophic earthquake documented in the Spanish Garrotxa and Ripolles regions. Since now no notices were repported about that in the Valira Valleys (Andorra and Alt Urgell), but different documentaries findings bear witness to the existence of earthquakes in La Seu d'Urgell and the valley of the Valira prior to 1437. This contribution demonstrate such earthquake events and we wonder about its incidence in the half western Catalan Pyrenees.