Earth's Tilted Magnetic Field 41,000 Years Ago Pushed The Auroras to Unexpected Places (ScienceAlert, December 2021)

Title:

Earth's Tilted Magnetic Field 41,000 Years Ago Pushed The Auroras to Unexpected Places

 

Author:

Mindy Weisberger 

Published:

ScienceAlert, 19 December 2021

https://www.sciencealert.com/the-laschamp-event-titled-earth-s-magnetic-field-41-000-years-ago-it-took-1-300-years-to-right-itself

 

From the article:

It took about 1,300 years for the magnetic field to return to its original strength and tilt, and during that time the auroras strayed to near-equatorial latitudes where they are typically never seen, scientists reported on Thursday (Dec. 16) at the annual conference of the American Geophysical Union (AGU), held in New Orleans and online.  

 

This period of intense geomagnetic change may also have shaped changes in Earth's atmosphere that affected living conditions on parts of the planet, presenter Agnit Mukhopadhyay, a doctoral candidate in the Climate and Space Sciences Department at the University of Michigan, said at the AGU conference.

 

We found the first Australian evidence of a major shift in Earth’s magnetic poles. It may help us predict the next [by Agathe Lise-Pronovost, McKenzie Research Fellow in Earth Sciences, University of Melbourne]

Title:

We found the first Australian evidence of a major shift in Earth’s magnetic poles. It may help us predict the next

 

Author:

Agathe Lise-Pronovost

McKenzie Research Fellow in Earth Sciences, University of Melbourne

 

Published:

The Conversation, 15 February 2021

https://theconversation.com/we-found-the-first-australian-evidence-of-a-major-shift-in-earths-magnetic-poles-it-may-help-us-predict-the-next-155040

 

From the article:

About 41,000 years ago, something remarkable happened: Earth’s magnetic field flipped and, for a temporary period, magnetic north was south and magnetic south was north.  

 

Palaeomagnetists refer to this as a geomagnetic excursion. This event, which is different to a complete magnetic pole reversal, occurs irregularly through time and reflects the dynamics of Earth’s molten outer core.