Des scientifiques découvrent des freins naturels sur une faille du Pacifique

Des chercheurs ont identifié des zones barrières naturelles sur une faille sous-marine qui agissent comme des freins pour empêcher les séismes de prendre de l'ampleur. Ces résultats découlent d'études détaillées sur la faille transformante de Gofar, au large de l'Équateur.

La faille de Gofar se situe à environ 1 000 miles à l'ouest de l'Équateur, là où les plaques Pacifique et Nazca glissent l'une contre l'autre. Elle produit des séismes de magnitude 6 presque identiques tous les cinq à six ans, et ce depuis au moins 30 ans. Les scientifiques se sont longtemps interrogés sur les raisons pour lesquelles ces séismes restent si constants et limités en intensité.

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