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Earth's magnetic field has started to weaken
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The Hindustan Times
- Article date:
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July 1, 2008
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Report from Asian News International brought to you by HT Syndication.
Washington, July 1 -- A new study has determined that 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.
"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.
According to a report in National Geographic News, the findings suggest similarly quick changes are simultaneously occurring in the liquid metal, 1,900 miles (3,000 kilometers) below the surface.
The swirling flow of molten iron ...