Guest guest Posted July 24, 2008 Report Share Posted July 24, 2008 Earth's Core, Magnetic Field Changing Fast, Study Says Kimberly Johnsonfor National Geographic News June 30, 2008 Rapid changes in the churning movement of Earth's liquid outer core are weakening the magnetic field in some regions of the planet's surface, a new study says. "What is so surprising is that rapid, almost sudden, changes take place in the Earth's magnetic field," said study co-author Nils Olsen, a geophysicist at the Danish National Space Center in Copenhagen. http://news.nationalgeographic.com/news/pf/76158139.html Quote Link to comment Share on other sites More sharing options...
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