Quote:
Originally Posted by freebeard
It's hard to falsify that without a provided citation.
....aaand we're back to square one.
Wasn't there another thread on climate change that got locked/
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1) it's from the dozens of solar physicists who've published in the journals I read.
2) the Heliosphere is an artifact of the solar wind.
3) the IPMF is an artifact of interacting magnetic fields throughout the entire solar system. It's there, working, whether or not there's solar wind.
4) during the transition phase of an actual polar magnetic field reversal, magnetic flux WILL decline to 25% of its normal magnitude.
5) however, during this transition, the IPMF will still protect Earth from cosmic particle bombardment, such that, over the 800 Reversal events experienced on Earth over the past 160-million years, there's never been any evidence for extinction events or significantly-increased cosmic particle exposure at Earth's surface.
6) there are 'Superchron' events in which, the magnetosphere can go 70-million years without any change at all ( Permo- Carboniferous LRS ).
7) no one can predict an 'Excursion'
8) no one can predict a 'Reversal'
9) no one can predict the temporal shelf-life of an excursion or reversal
10) we need to pay attention to ' Secular Resonance' ( Milankovich / Earth-Mars orbital perturbations ) and its gravitational-tidal impact on Earth's interior to have a handle on magnetospheric dynamics.
11) these are dynamic events which occur on timescales of tens of thousands of years.
12) we average 4.3 reversals per 1-million years, with an average 'lifespan' of 232,558-years between events.
13) our last reversal was 780,000-years ago.