Was reading on the net that Earth is overdue for a magnetic pole switch that could in theory alter the deep ocean current causing an up-welling that could drop air temps significantly.  Any thoughts?

https://www.discovermagazine.com/environment/millions-of-years-ago-the-poles-moved-and-it-could-have-triggered-an-ice-age

Will Geese fly to the North pole and starve if this happens?

58 minutes ago, Drakes said:

Was reading on the net that Earth is overdue for a magnetic pole switch that could in theory alter the deep ocean current causing an up-welling that could drop air temps significantly.  Any thoughts?

https://www.discovermagazine.com/environment/millions-of-years-ago-the-poles-moved-and-it-could-have-triggered-an-ice-age

Will Geese fly to the North pole and starve if this happens?

 

Good job I read the article you linked to before I commented.

Your article is not about the magnetic poles but the mechanical spin axis poles.

The fact that spinning round object such as tops can suddenly flip their spin axis, thereby reversing the spin has long been known.
The Victorians had curiosity devices based on this.

In the 1980s Peter Warlow published a book

https://www.amazon.co.uk/Reversing-Earth-Peter-Warlow/dp/0460044788

In which he attributes many past events to such flips.

Yes the spin axis could, in theory, invert.

But we have no hard evidence that it has ever done so.

 

The inversion of the magnetic poles is a differnt matter.

These are known to have inverted many times.

Indeed we may well be approaching such a change at the moment as there is a growing inversion known as the South Atlantic Magentic Anomaly.

https://en.wikipedia.org/wiki/South_Atlantic_Anomaly

 

But I doubt that Ice Ages occur due to one single  cause, although Milankovitch cycles do coincide with periodic precessional, spin, and orbital changes.

https://en.wikipedia.org/wiki/Milankovitch_cycles

 

 

Edited July 24, 20205 yr by studiot

Just now, studiot said:

 

Good job I read the article you linked to before I commented.

Your article is not about the magnetic poles but the mechanical spin axis poles.

The fact that spinning round object such as tops can suddenly flip their spin axis, thereby reversing the spin has long been known.
The Victorians had curiosity devices based on this.

In the 1980s Peter Warlow published a book

https://www.amazon.co.uk/Reversing-Earth-Peter-Warlow/dp/0460044788

In which he attributes many past events to such flips.

Yes the spin axis could, in theory, invert.

But we have no hard evidence that it has ever done so.

 

The inversion of the magnetic poles is a differnt matter.

These are known to have inverted many times.

Indeed we may well be approaching such a change at the moment as there is a growing inversion known as the South Atlantic Magentic Anomaly.

https://en.wikipedia.org/wiki/South_Atlantic_Anomaly

 

 

Could the poles flipping also effect the axis?  Which in turn might effect the oceans that like the molten core are liquid

Cause and effect happens and there are technically thousands of links to the subject not just one

https://www.sciencedaily.com/releases/2012/10/121016084936.htm

Some 41,000 years ago, a complete and rapid reversal of the geomagnetic field occured. Magnetic studies of the GFZ German Research Centre for Geosciences on sediment cores from the Black Sea show that during this period, during the last ice age, a compass at the Black Sea would have pointed to the south instead of north.

Moreover, data obtained by the research team formed around GFZ researchers Dr. Norbert Nowaczyk and Prof. Helge Arz, together with additional data from other studies in the North Atlantic, the South Pacific and Hawaii, prove that this polarity reversal was a global event. Their results are published in the latest issue of the scientific journal Earth and Planetary Science Letters.

What is remarkable is the speed of the reversal: "The field geometry of reversed polarity, with field lines pointing into the opposite direction when compared to today's configuration, lasted for only about 440 years, and it was associated with a field strength that was only one quarter of today's field," explains Norbert Nowaczyk. "The actual polarity changes lasted only 250 years. In terms of geological time scales, that is very fast." During this period, the field was even weaker, with only 5% of today's field strength. As a consequence, Earth nearly completely lost its protection shield against hard cosmic rays, leading to a significantly increased radiation exposure.

This is documented by peaks of radioactive beryllium (¹⁰Be) in ice cores from this time, recovered from the Greenland ice sheet. ¹⁰Be as well as radioactive carbon (¹⁴C) is caused by the collision of high-energy protons from space with atoms of the atmosphere.

 

Do you not understand the difference between the North (and South) poles and The North (and South) Magnetic poles ?

 

There is evidence that the core does not spin in the same way as the mantle and crust.

Edited July 24, 20205 yr by studiot