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Satellites Can Monitor Volcanoes

Predicting when a volcano will blow its top takes constant monitoring. Researchers are now looking to satellites as a valuable eye in the sky, since they can observe the ground around volcanoes for signs of deformation.

Ground deformation can indicate that molten rock, or magma, is flowing. This sometimes hints at an eruption to come — but it’s not a sure sign. To clarify the link between deformation and eruption, researchers looked at 18 years’ worth of satellite data.

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