At https://www.livescience.com/magnetic-flip-42000-years-ago.html … a reversal of the Earth’s magnetic field thousands of years ago plunged our planet into an environmental crisis. The magnetic north and south poles swapped places. It also had ecological repercussions – a global climate upheaval. It was accompanied by extinctions.
The magnetosphere that shields Earth is a protective bubble, we are informed, shielding us from solar radiation. However, the magnetic poles, and the magnetic field itself, are not fixed in place. They can reverse polarity. This has happened multiple times in Earth’s history. The evidence is preserved in volcanic deposits and related sedimentary layers.
At https://www.livescience.com/planet-earth/eerie-sounds-triggered-by-plasma-waves-hitting-earths-magnetic-field-captured-in-new-nasa-sound-clip … NASA has released an eerie sound clip full of high frequency whistles, crunches, and whooshes. They were created by waves of plasma striking Earth’s magnetic field – or magnetosphere. See also https://www.esa.int/Applications/Observing_the_Earth/FutureEO/swarm/The_scary_sound_of_Earth_s_magnetic_field … and https://www.livescience.com/planet-earth/geology/listen-to-haunting-sounds-of-earths-magnetic-field-flipping-41-000-years-ago-in-eerie-new-animation … which applies the same, or a similar sound clip to the Laschamp Event 41,000 years ago. A video of what might have been heard and observed by human inhabitants back then. Obviously, it is a uniformitarian timescale that is posited as we are told it took place over 3000 years, rather than quickly.