Wednesday, October 15, 2014

Earth Magnetic Field Flip Within Lifetime

My but don't we live in interesting times?   DT the ET

By Mitch Battros-Earth Changes Media 10-15-14

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Earth Magnetic Field Flip Within Lifetime

A new study by a team of scientists from Italy, France, Columbia University and the University of California, Berkeley, demonstrates that the last magnetic reversal actually happened very quickly, in less than 100 years - roughly a human lifetime.

Earth's magnetic field has flipped many times throughout our planet's history. Our world has a north and south dipole driven by convection in Earth's iron core as it interacts with charged particles from our galaxy 'Milky Way' mostly of cosmic rays and also solar rays from our Sun.

For reasons yet fully known, Earth's magnetic field periodically weakens setting into motion a chain of events which causes destabilizing of Earth's fluids - mostly of magma and also ocean's and ice. These natural cyclical events cause the shifting of weather patterns, climate, elevated earth changing events such as earthquakes, volcanoes, tornadoes, hurricanes etc.

The rapid flip, much faster than the thousands of years most geologists thought, comes as new measurements show the planet's magnetic field is weakening 10 times faster than normal. "It's amazing how rapidly we see that reversal," said UC Berkeley graduate student Courtney Sprain. "The paleomagnetic data are very well done. This is one of the best records we have so far of what happens during a reversal and how quickly these reversals can happen."

The magnetic record the Italian-led team obtained shows that the sudden 180-degree flip of the field was preceded by a period of instability that spanned more than 6,000 years. The instability included two intervals of low magnetic field strength that lasted about 2,000 years each. Rapid changes in field orientations may have occurred within the first interval of low strength. The full magnetic polarity reversal, which is the final and very rapid flip, happened toward the end of the most recent interval of low field strength.


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