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Computer image of bedrock grooves (corrugations) derived from 3D seismic imaging offshore of Costa Rica. It shows the megathrust fault surface of the Cocos Plate diving beneath the Caribbean Plate, with the upper plate virtually removed. Some of the fault surface has long, straight corrugations; some appears more jumbled. Researchers stretched the image slightly to make the grooves easier to see. The view is roughly from Costa Rica looking offshore.
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Researchers report finding corrugations, or giant grooves, kilometers long, hundreds of meters wide, and tens of meters high, between the Cocos and Caribbean tectonic plates that form part of the Costa Rica subduction zone. The detailed three-dimensional data they used to uncover these corrugations can help them better understand large subduction zone earthquakes and related tsunamis worldwid
Researchers report finding corrugations, or giant grooves, kilometers long, hundreds of meters wide, and tens of meters high, between the Cocos and Caribbean tectonic plates that form part of the Costa Rica subduction zone. The detailed three-dimensional data they used to uncover these corrugations can help them better understand large subduction zone earthquakes and related tsunamis worldwid
