Earth's Magnetic Field may Invert
There has been much talk recently about the possibility of Earth's magnetic field reversing polarity again, as it has apparently done numerous times over the aeons.
This event may be close, or it may be far, far off, but scientists say another flip may be coming "soon".
What never seems to be mentioned is if it does happen how fast will it occur? Will it become evident over a long period, accelerating towards a "null" point, then emerging in the inverted sense? Will it flip quickly? How fast? Hours, weeks, centuries? Does anyone have any idea at all?
What effects will/might it have on climate, weather, the Ionosphere, solar radiation?
How would/could we cope in aviation if this hit us suddenly?
Has anyone developed sound theories about this yet? Any links or ideas?