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Turbulence in molten core helps amplify Earth's magnetic fie http://www.epgeology.com/news-f37/turbulence-molten-core-helps-amplify-earth-magnetic-fie-t5886.html |
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Author: | NewsPoster [ Tue Nov 18, 2014 6:31 am ] |
Post subject: | Turbulence in molten core helps amplify Earth's magnetic fie |
Science Daily Geology Researchers have shown that turbulence, random motion that takes place in the molten metal in the Earth's core, makes a contribution to our planet's magnetic field. To obtain this result, they modeled the Earth's outer core using liquid sodium enclosed between two rotating concentric metal spheres. Like many planets and most stars, the Earth produces its own magnetic field by dynamo action, i.e. because of the motion of an electrically conducting fluid-in this case, a mixture of molten iron and nickel. Read more |
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