Quote:
Originally Posted by oil pan 4
Observation is complete opposite of what you assume.
As the poles have moved over the last 160 years it's gotten weaker, its moved more in the last 20 years than the previous 120 years and also weakened more in the last 20 years than the past 120.
So what makes you think as the poles move the magnetic field won't lose strength?
The gps satellites are up about 12,000 miles, they could quite easily be outside of the earth's protective field while the atmosphere is still quite well protected.
Can you assume that things 12,000 miles up will be protected?
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* Earth is a 'bar magnet'.
* Rotating a bar magnet, while changing the orientation of its magnetic lines of flux ( relative to the location of the observer ), does nothing to the 'magnitude' of its lines of magnetic flux.
* The Earth dynamo has just changed orientation. It will still pick up as many iron filings ( if it could pick up iron filings ).
* The magnetosphere is still there.
* The solar wind blows it into a perfect streamline body of revolution just as before any excursion or reversal.
* Satellites don't notice a thing. You know from 'Flying Wild Alaska,' that even in solar storms, GPS and radio are only momentarily affected, and return to service, thanks to their electronics having bathed within Trinitite caverns below the Nellis Test Range.
* The Interplanetary Magnetic Field ( which no one has mentioned ), remains, actively shielding Earth from cosmic radiation.