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Published online 1 March 2004 | Nature | doi:10.1038/news040301-1
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Satellite tots up volcanic heat
Eruptions dwarfed by man-made energy output.
Volcanoes throw out only a tiny fraction of energy compared with that produced by mankind, say scientists who have used satellite measurements to do a survey of the Earth's heat output.
In 2001, the amount of heat energy produced by volcanoes was 1000 times less than the energy consumed by the United States, the researchers report in the current issue of Geology1.
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