News From the Field
Deep Earth heat surprise
August 9, 2013
Researchers have for the first time, experimentally mimicked the pressure conditions of the Earths' deep mantle to measure thermal conductivity using a new measurement technique on the mantle material magnesium oxide. They found that heat transfer is lower than other predictions, with total heat flow across the Earth at about 10.4 terawatts, about 60 percent of the power used today by civilization.
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