Saturday, July 5, 2008

Earth's Magnetic Field Fluctuating Wildly

Scientists have discovered that the Earth's magnetic field is weakening in some parts and changes are happening pretty quickly. The fluctuations are thought to be closely connected with current movements of our planet's outer liquid center core, 3,000 kilometers down.

In 2003, the changes were prominent in the Australasian region. This shifted to Southern Africa in 2004. The findings are the result of nine years of accumulated satellite data. Mioara Mandea, scientist of the German Research Centre for Geosciences in Potsdam says the changes may mean an upcoming reversal of the geomagnetic field.

The Earth's polarity regularly switches and evidence of this has been found by scientists geologically. Every time a decline in the Earth's magnetic field happens, the surface becomes exposed to more radiation from the Sun, and outer space in general, to altitudes below a hundred kilometers. Currently, the geomagnetic field is weak in the South-Atlantic region.

Some associate the phenomenon to Mayan prophecies and the belief about 2012, the researchers say the thinning of the magnetic field does not even affect temperature and only disrupt radio signals. The small photo (top left) shows how solar particles interact with the magnetic field to produce spectacular aurora displays like the one shown in Manitoba. The chart on the left marks polar reversals in the Earth's geological history. The scientists are continuing to monitor the developments.

Journey to the Center of the Earth remade in 3D

1 comment:

Wholesale Tanning Lotions said...

Scientist say its human tendency to predict earth's ending. I am not worried about 2012.