On Tue, 2002-12-10 at 14:17, John P. Looney wrote:
> On Tue, Dec 10, 2002 at 07:06:04AM -0700, joe at galway.net mentioned:
> > On a slightly OT... I don't know if anyone has seen any of these
> > predictions about the earth mag field reversal. The consequence of this
> > is quite dire: Not only do compasses cease to function, but the GPS
> > satellites are likely to be fried by radiation. I'm not sure how we are
> > going to navigate ... Sextants?? .. or a revival or the LORAN and
> > DECCA radio beacons? Scary.
>> When are we due for our next flip ?
>> John
According to Dr Alan Thomson of the British Geological Survey
"Reversals happen every 250 000 years or so, and as there has
not been one for almost a million years, we are due one soon."
>From http://www.70south.com/news/1036926818/index_html
David
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