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12 votes

How long does a magnetic pole reversal take to complete?

The entire process appears to take 3,000-4,000 years, according to Valet and Fournier's May 2016 review article "Deciphering records of geomagnetic reversals," which was published in AGU's Reviews of ...
jeffronicus's user avatar
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6 votes

Were the "North" and "South" poles' names picked randomly or based on some science?

The Earth is more or less spherical, and more or less rotates steadily about an axis between the north and south poles, with a very long term (26000 years) precession and shorter term nutations. That ...
David Hammen's user avatar
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6 votes

Why is McMurdo Station in Antartica more hostile than Longyearbyen (Norway), while Longyearbyen is closer to the pole?

The lack of oceanic and atmospheric currents going into and around Antarctica from equatorial latitudes means that much less heat is transported from the tropical latitudes to Antarctica compared to ...
Camilo Rada's user avatar
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5 votes
Accepted

Why is McMurdo Station in Antartica more hostile than Longyearbyen (Norway), while Longyearbyen is closer to the pole?

As to the questions of the flights: McMurdo is about 3.500 km from the next airport (Dunedin in southern New Zealand), while Longyearbyen is only 950 km from Tromsø. It simply is due to the distance ...
Erik's user avatar
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4 votes

How long does a magnetic pole reversal take to complete?

As per our numerical calculations it takes about ~1000 years to completely flip the dynamo, that being said the current models are not even close to the actual parameters in the earth's core because ...
Gaurav Dhama's user avatar
4 votes
Accepted

Would freezing the ocean and storing the ice in the poles reduce effects of climate change or sea level?

There are a couple of different questions in there -- one is whether this would help with sea level rise, the other whether this would help with temperature increase. (The second part is easy to ...
jeffronicus's user avatar
  • 3,487
4 votes
Accepted

Southern Hemisphere: What is the most Northern latitude where the sun can be seen for more than 24 hours?

The situation in the southern hemisphere is identical to the northern hemisphere, but they occur at different times of the year. In the northern hemisphere the arctic circle is situated at 66.5 ...
Fred's user avatar
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4 votes
Accepted

Is it possible to create ice in poles?

It depends on which pole. The south pole is in the middle of Antarctica, with mean temperatures of -57°C, liquid water doesn't exist there and the air is extremely dry. Therefore, I would say that it ...
Camilo Rada's user avatar
  • 17.7k
4 votes
Accepted

What would the equilibrium temperature be at the poles in a world without seasonality?

If we consider that by "Assume daily cycle and convection and so on operate as usual" you meant that all heat transport from/to the pole remain as it is today. Then, we can do a back of the envelope ...
Camilo Rada's user avatar
  • 17.7k
1 vote

The axis of rotation of the earth passes through the geographical poles or is there a true axis?

Perhaps you are thinking about the discrepancy between true north and magnetic north. The former is where the earth's axis of rotation intersects the earth's surface in the northern hemisphere. The ...
Nuclear Hoagie's user avatar
1 vote

The axis of rotation of the earth passes through the geographical poles or is there a true axis?

Geographic axis is NOT fixed. North and south poles are NOT fixed. Ideology is reverse of what you are thinking. First suppose that Earth is rotating about some arbitrary axis => Then this axis ...
shul's user avatar
  • 133

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