Topic was the point of discussion on Discovery Channel last night.
Points of note:
- regular event in geological terms. History has it occuring every 200,000 years but the last one was 700,000 years ago so somewhat overdue for another one.
- mean strength of earth mag. field has reduced 10 % in last 150 yrs which historically has been shown a precurser to a reversal. South Atlantic has a weak point of note which is down 30% on past readings ( via alignment of field found in rocks which, once molten and then cooled take up alignment with existing field of the time)
- last reversal event took place over centuries with "Mag North" moving as much as 60 degrees in a 10 day period. Period defined as time of weak mag activity with mag "North/south" swapping on numerous occasions before settling down.
-finally....."soon" means at best guess the next time Jesus decides to run on at fullback for Jerusalem for his testamonial.
Last edited by fire wall; 14th Dec 2003 at 17:29.