Forskare upptäcker dolda bromsar för jordbävningar i Stilla havet

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Forskare har identifierat naturliga barriärzoner längs en undervattensförkastning som fungerar som bromsar för att förhindra att jordbävningar växer sig större. Resultaten kommer från detaljerade studier av Gofar-förkastningen utanför Ecuadors kust.

Gofar-förkastningen ligger ungefär 1 000 mil väster om Ecuador där Stillahavsplattan och Nazcaplattan glider förbi varandra. Den har producerat nästan identiska jordbävningar med magnitud 6 vart femte till sjätte år under minst 30 års tid. Forskare har länge förbryllats över varför jordbävningarna förblir så konsekventa och begränsade i storlek.

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