David Robbins K1TTT wrote:
"And where is the south pole going now??"
******************
All over the place ... maybe ... according to this link.
http://www.pbs.org/wgbh/nova/magnetic/reversals.html
This animation (click on "Launch Interactive") based upon the
theoretical calculations of Gary Glatzmaier at the University of
California, Santa Cruz, and Paul Roberts of the University of
California, Los Angeles is a bit rapid to follow, but it is interesting
to see. The basic form of the magnetic wanderings from the theoretical
model conform to physical evidence of past shifts frozen in lava flows,
etc. In essence, multiple minor poles start to form at the surface of
the earth's core, and just before the major magnetic poles at the
earths' surface flip the situation would be pretty chaotic.
I presume the world would need almost real time updating of magnetic
direction based upon GPS location. No reason it couldn't be done,
though, I guess ... especially by the time it would actually happen.
Such reversals have happened many times in the past but each takes a
long time. Nobody has so far found any correlation to a natural
catastrophe or species die off. An apparently similar mechanism occurs
within the sun that synchs with the sunspot cycles we know and love (the
former apparently causes the latter).
73,
Dave AB7E
>
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