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To: Fred Nerks

This magnetic reversal is supposed to happen around once every 13 000 years so it looks like were are due for another one soon in the next coming decades.


12 posted on 07/29/2009 8:41:44 PM PDT by Republic_of_Secession.
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To: Republic_of_Secession.

I agree. The Canadian Magnetic Pole is moving.In the most recent survey, completed in May, 2001, determined an updated position for the Pole and established that it is moving approximately northwest at 40 km per year.


18 posted on 07/29/2009 8:59:36 PM PDT by ErnstStavroBlofeld (You hit somebody with your fist and not with your fingers spread". Generaloberst Heinz Guderian)
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To: Republic_of_Secession.

No, a magnetic reversal does NOT happen around once every 13,000 years. Their interval, in fact, is highly irregular, perhaps even chaotic. The last major reversal was 780,000 years ago, although there were temporary collapses in magnetism since then, which I presume is what this article is calling a reversal. Some reversals were millions of years ago, some happened within several thousand years of each other, if you count these momentary collapses as reversals.

The magnetic field is currently weakening; this in no way suggests a major or minor reversal is coming. At the current rate of collapse, it would take over 1000 years to completely collapse, and such variations are completely normal outside of any long-scale trend.


22 posted on 07/29/2009 9:05:20 PM PDT by dangus (I am JimThompson)
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To: Republic_of_Secession.

Wasn’t it more like every 200,000 years?


33 posted on 07/29/2009 9:40:09 PM PDT by muawiyah
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