you mean a POLARITY SHIFT......(not a pole shift)
http://en.wikipedia.org/wiki/Geomagnetic_reversal
A polarity shift is another word for the "reversal" of the earth's magnetic fields....
http://www.space.com/scienceastronomy/earth_poles_040407.html
evidence shows we should expect to start seeing a shift BEGIN in about 150 - 200 years, but we do see some fluxuations as we speak... its just not major.
it should take about 100 years for the whole shift to complete.
there is evidance supporting the fact we've gone through on before, I just can't find it for you. I'm not upity up on geology or even where to find the answers.
heres a nova flick on it. (long and it kinda repeats itself but its worth a watch.... its amazing)
http://video.google.com/videoplay?docid=3902466783636795302&q=earth%27s+invisible+shield&total=7&start=0&num=10&so=0&type=search&plindex=0
sorry, but this has nothing to do with 2012
oh and the planets won't line up on 2012 either.
2007-11-27 14:30:05
·
answer #1
·
answered by Mercury 2010 7
·
1⤊
0⤋
A polar shift is not the same as a flip of the electromagnetic field.
The pole shift theory is a hypothesis that the axis of rotation of a planet has not always been at its present-day locations or that the axis will not persist there; in other words, that its physical poles had been or will be shifted.
Recent work by scientists and geologists indicate that Earth rebalanced itself around 800 million years ago during the Precambrian time period. They studied magnetic minerals in sedimentary rocks in a Norwegian archipelago, and using these minerals they found that the north pole shifted more than 50 degrees (about the current distance between Alaska and the equator) in less than 20 million years. This is supported by a record of changes in sea level and ocean chemistry in the Norwegian sediments that could be explained by true polar wander.
Research using GPS has shown that normal seasonal changes in the distribution of ice and water cause minor movements of the poles.
A geomagnetic reversal is a change in the orientation of Earth's magnetic field such that the positions of magnetic north and magnetic south are switched. These events, which are believed to last a few hundred to a few thousand years, often involve an extended decline in field strength followed by a rapid recovery after the new orientation has been established.
Through analysis of palaeomagnetic data, we now know that the field has reversed its orientation tens of thousands of times since its formation very early on in earth history. It has become apparent that the rate at which reversals occur has varied considerably throughout the past. During some periods of geologic time (e.g. Cretaceous Long Normal), the Earth's magnetic field is observed to maintain a single orientation for tens of millions of years. Other events seem to have occurred very rapidly, with more than one reversal in 50,000 years. The last reversal was the Brunhes-Matuyama reversal approximately 780,000 years ago.
Right now, the overall geomagnetic field is becoming weaker at a rate which would, if it continues, cause the dipole field to temporarily collapse by 3000–4000 AD.
2007-11-27 14:27:14
·
answer #2
·
answered by Anonymous
·
1⤊
1⤋
No there will not be any such change in 2012.
There is plenty of evidence that Earth's magnetic poles have reversed many times over geological history. There is some weakening and changes in the Earth's magnetic filed now that seem to indicate another switch is about to happen, but scientists think the change will take thousands of years to complete. Certainly no real scientist is saying it will happen in one year, not 2012 or any other year.
2007-11-27 14:17:29
·
answer #3
·
answered by campbelp2002 7
·
2⤊
0⤋
of course theres scientific basis to a magnetic shift. it is in fact happening, the earths magnetic field is slowing switching. of course this wont happen in 2012, more like in a few thousand years. theres nothing that could randomly cause the magnetic field to switch. even if it did we wouldnt be effected by it at all, a magnetic shift wouldn't do us any harm at all. no climate change, no technology outage, just backward compasses.
2007-11-27 14:21:50
·
answer #4
·
answered by Anonymous
·
2⤊
1⤋
they say the most believable lies contain a kernel of truth.
take at look at Google Earth, around where the North Magnetic Pole is... you will see a dot for 2007, then way off another for 2006... follow it, to find 2005... yes, its wandering.
that's normal, so far nothing bad.
2007-11-27 14:27:03
·
answer #5
·
answered by Faesson 7
·
1⤊
0⤋
ok
http://thedaoculture.com/prophecy_PoleShift.php
2007-11-29 00:41:35
·
answer #6
·
answered by Anonymous
·
0⤊
0⤋