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    Growth of Earth's core may hint at magnetic reversal - Forum

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    Forum moderator: arya, dethalternate 
    Forum » untoten.reich » Science, Astronomy, Nature » Growth of Earth's core may hint at magnetic reversal
    Growth of Earth's core may hint at magnetic reversal
    archmageDate: Tuesday, 17-July-2012, 3:27 PM | Message # 1
    -- dragon lord--
    Group: lords
    Messages: 3131
    Status: Offline


    Lopsided growth of the Earth's core could explain why its magnetic field reverses direction every few thousand years. If it happened now, we would be exposed to solar winds capable of knocking out global communications and power grids.

    One side of Earth's solid inner core grows slightly while the other half melts. Peter Olson and Renaud Deguen of Johns Hopkins University in Baltimore, Maryland, used numerical modelling to establish that the axis of Earth's magnetic field lies in the growing hemisphere – a finding that suggests shifts in the field are connected to growth of the inner core.

    There are signs that the next switch may be under way: rapid movements of the field's axis to the east in the last few hundred years may be a precursor to the north and south poles trading places, the researchers speculate.


    untotenawake
    Full article/source- http://www.newscientist.com/article....al.html
     
    Forum » untoten.reich » Science, Astronomy, Nature » Growth of Earth's core may hint at magnetic reversal
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