The following paragraph from that link hints at a possible cataclysm but
stops there.
No one really knows what happens to the crust or mantle when the poles
reverse and if it really takes 1000 years or could be sudden under certain
unknown conditions.
The inner core in our simulation initially rotated between 2 and 3 degrees
longitude per year faster than the solid mantle and surface [1, 5]. This
prediction in 1995 [1] for the Earth motivated two seismologists from
Columbia University in early 1996 to search for evidence of this
super-rotation in 30 years of seismic data. They found evidence that
supports our prediction and published it in July 1996 [6], (Figure 4b). More
recent simulations of ours that now include a simple parameterization for
the gravitational coupling that may exist between the mantle and the inner
core have a much smaller inner core rotation amplitude; however, this
rotation is still predominantly eastward relative to the model Earth's
surface.
I figure that Im too old to worry about it. Sorry but I dont subscribe to
lunatic fringe theories of the Mayans understanding magnetic field theory
and the earth rotating in the other direction.
Carl/KM1H
----- Original Message -----
From: "David Gilbert" <xdavid@cis-broadband.com>
To: "jeremy-ca" <km1h@jeremy.mv.com>
Cc: "Towertalk" <towertalk@contesting.com>
Sent: Wednesday, August 08, 2007 7:44 PM
Subject: Re: [TowerTalk] Magnetic North
>
> Untrue on both points. The reversal of the earth's magnetic poles has
> little or nothing to do with the earth's crust. It occurs gradually and
> is in fact probably overdue, and civilization isn't likely to be at all
> threatened by it when it happens.
>
> http://science.nasa.gov/headlines/y2003/29dec_magneticfield.htm
>
> However, if you prefer "alternate references" that support your
> contention, here's an amusing one:
>
> http://survive2012.com/geryl1.php
>
> Dave AB7E
>
>
>
>
> jeremy-ca wrote:
>> And at some point the earths crust will slip and the poles reverse as
>> they have in the past. Goodby civilization.
>>
>> Carl
>> KM1H
>
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