4 ms·
I really wish this included a specific when. It points out a lot of dire consequences, but doesn’t give any strong discussion of the immanence of the impending
by gpapilion 9y ago
I really wish this included a specific when. It points out a lot of dire consequences, but doesn’t give any strong discussion of the immanence of the impending event.
- fzzzy 9y agoI don't think anybody knows. I find the historical data to be extremely interesting. https://en.wikipedia.org/wiki/North_Magnetic_Pole#/media/File:Magnetic_North_Pole_Positions_2015.svg https://en.wikipedia.org/wiki/North_Magnetic_Pole#/media/Fil...
- iamben 9y agoSeconded. Read and figured I'd missed it, so read again. Also couldn't see any mention of how long it takes. Like "it's happening now, but we think it may X number of years."
- nerdponx 9y agoI recall reading an article ~10 years ago that said it happens every 25,000 years or so, and that we aren't anywhere close to the next one.
- dragonwriter 9y agoAFAIK, the current understanding is that while geomagnetic reversals happen, they have no periodicity, and can be as quick as hundreds of years apart (a pair of which seems to have occurred around 41,000 years ago), or as long as tens of millions of years (several of which have occurred.)