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Earth’s pulse felt at hot spots

Posted by / September 23, 2010


Volcanic hot spots around the world appear to be pulsating together — like one giant planetary heartbeat. Two eruptive pulse periods have been detected at five and 10 million years.

The discovery suggests that hot spots are responding to regular fluctuations that come from way down in the Earth’s core. It’s from the core that pulses of heat are thought to be launched through the mantle, which rise and melt rocks nearer the surface to create hot-spot eruptions. Co-pulsing hot spots could open a new window into the behavior of Earth’s core.

Full story at Discovery News.

More news from Discovery Communications.

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