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Half of earth's core heat is left over from compression during its formation. The other half is from radioactive decay.

Just about none of it is due to friction.

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Once again, the question is what a redistribution of an unknown number of trillion of tons of glacial ice were to be done over a fairly short period of time and what effect that would have on the earth.

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Why would a MAGNETIC pole shift have anything to do with the position of ice ?

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Why? The planet isn't going to flip over

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Butter and Bisquick

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So tou actually do think its caused by global warming

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A magnetic pole reversal is estimated to take anywhere from  100 to 10,000 years. (Both ends of that estimate range being low probability) So in that sense it's not a very dramatic or a very fast process.

There is zero correlation between mass extinction and magnetic field reversals. Individual species that rely on the magnetic field for migration etc. may see significant population changes, but mass extinctions overall don't seem to be related.

The Earth's magnetic field does not disappear completely during a shift. It becomes scrambled, with multiple poles around the Earth. It is weaker, but still strong enough to do most of its job. The Earth's crust maintains some magnetism as well and this helps too. Magnetic dependent animals may well adapt to a more scrambled field, and still use it to navigate as long as it's not shifting more than a few degrees a year.

There are increased isotope levels in the rock records associated with magnetic field reversal, meaning that more cosmic rays penetrate the upper atmosphere, but overall, the Earth's atmosphere is thick enough to protect us all on its own. Incidental doses during aircraft flights will be higher, but  still not anywhere near regulatory limits. Astronauts and hardware in orbit may need more protection. However, we already have a handle on that with high orbit satellites and deep space probes. And are developing it further since we'll need it for returning to the Moon, and for manned exploration of Mars, whether the Earth's field weakens and flips, or not.

The overall radiation increase for the surface worldwide will be dwarfed by sources such as isotope release from burning coal, nuclear testing, nuclear accidents like Chernobyl and Fukushima, and just from natural sources like potassium in bananas and granite countertops.

Atmosphere and water loss to the solar wind with the Earth's reversal like on Mars as its field completely died, will not be significant.  Again, the lesser scrambled field still offers significant protection. The solar wind itself generates some of the protective magnetic field as it hits the ionosphere.

Also, the Sun appears to be entering into a Maunder minimum with few flares or sunspots.  Which also means fewer solar storms/CME's. So it could be a perfect time for a flip anyway.

So long and short of it, compass navigation might be a PITA, geese, ducks etc. might have a hard time, and space scientists will have to make some adjustments, but overall, life will go on and most won't notice,  except the Auroras might be over their house on the equator instead.

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Thanks.  Have any good info about how solar/cosmic radiation effect flight crews?

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You have the highest exposure to cosmic ionizing radiation than any other profession.  Wear sunscreen no joke.  Know too many old pilots with skin cancer.

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Sunscreen blocks UV light, not ionizing radiation.

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Consider this, how many trillions of tons of ice is putting pressure on the earths crust via gravity and the consequences of what would happen if that were to suddenly (relatively) change?

Do you think it would have an impact?

Just a question

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They say every generation thinks the end is near. But you have to think, has homosexuality, pedophelia, drug use, and other evil ever been promoted as normal like it is now? Worldwide, tv, media, music, magazines. Everything evil is now being shown as being good. And faith, marriage, and Christianity is bad.

And I'm not a very religious person. It's just obvious.

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Sunscreen blocks UV light, not ionizing radiation.

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Rome? Ancient Greece?

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Rome and Ancient Greece didn't have the television, media or, Internet. We are under a global change.

George bush Sr. Said it himself on TV. They want a new world order.

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Not sure if serious