[pct-l] North magnetic pole is adrift

[jdawud at yahoo.com (Junaid Dawud)]

Hey all,

I'm just curious how many geologists there are on this
list.

I'm one, I know there are others.

BTW, the rate at which the magnetic field strength is
decreasing has been accelerating.  The absence or
severe weakening of the field will result in much more
cosmic radiation reaching earths surface.  The earth
may begin displaying more than one pole (4 or more) as
the field breaks down.  

groovy stuff.

-------junaid

--- Jeff Moorehead <jeffmoorehead1@cox.net> wrote:

> 
> Most interesting topic indeed... Moreover, the
> reversal itself is not a 
> gradual event in geologic terms, but is
> catastrophic. The timing of these 
> rapid geomagnetic reversals happen to coincide with
> pronounced terrestrial 
> extinction events. The thinking is that the
> intensity of bombardment of the 
> earth by dangerous ionizing radiation increases
> manyfold during periods 
> where there is no magnetic polarity. The bulk of the
> radiation, normally 
> displaying its effects as the Aurora borealis and
> Aurora australis, is now 
> penetrating to the surface at lower latitudes where
> the majority of species' 
> ranges exist. And they thought we all were crazy
> back in the 70's for 
> actually worrying about ozone depletion.
> 
> Speaking of... Greg, where did you say we can view
> these dinosaur footprints 
> near Campo? ;)
> 
> 
> 
> > of which solidified about the time of the magnetic
> reversals.  Volcanic 
> > rocks
> > record the magnetic orientation when they solidify
> due to the magnetic
> > materials within them lining up to point towards
> the north pole where it 
> > is when the
> > cooling of the rock happens.
> >
> > There has been much speculation what a magnetic
> reversal would mean to
> > migrating birds that depend upon the magnetic
> field and all of our 
> > electronic
> > mechanisms these days.
> >
> > Greg "Strider" Hummel
> > (who happened to get his trail name from the
> extremely long stride evident 
> > in
> > the mud near Campo, noticed by hikers who came
> behind me in the year that 
> > I
> > hiked)
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