Earth’s Flipping Magnetic Field Heard as Sound Is an Unforgettable Horror

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Earth’s Flipping Magnetic Field Heard as Sound Is an Unforgettable Horror

Earth’s magnetic field

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a little more than 40,000 years ago. We can now experience this upheaval as an unnerving clatter interpreted from information collected by the ********* Space Agency’s

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satellite mission.

Combining the satellite data with evidence of

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, ********* geoscientists mapped the so-called Laschamps event and represented it using natural noises like the creaking of wood and the crashing of colliding rocks.

The resulting compilation from the Technical University of Denmark and the ******* Research Center for Geosciences is unlike anything you’ve ever heard.

Generated by the swirling liquid metals in our planet’s core,

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reaches

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of thousands of kilometers into space, protecting us all by deflecting atmosphere-stripping solar particles.

In its current orientation, the field lines form closed loops that are directed south to north above the planet’s surface, and then north to south deep within it. Yet every so often the field randomly flips its polarity. Were this to happen again today, our north-pointing compasses would point to the South Pole.

The last such cataclysmic event occurred about 41,000 years ago, leaving a signature in the Laschamps lava flows in France. As the field weakened to only 5 percent of its current strength the reversal process allowed a surpluss of cosmic rays to pass into Earth’s atmosphere.

Ice and marine sediment preserve isotopic signatures of this higher-than-normal solar bombardment, with levels of beryllium-10 isotopes doubling during the Laschamps event, according to

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These altered atoms are formed when cosmic rays react with our atmosphere, ionizing the air and frying the

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layer. With global

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being a potential consequence, it’s speculated the extinction of Australia’s megafauna as well as changes in human ***** use may have been

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“Understanding these extreme events is important for their occurrence in the future, space climate predictions, and assessing the effects on the environment and on the Earth system,” ******* Research Center for Geosciences geophysics Sanja Panovska

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.

It took 250 years for the Laschamps reversal to take place and it stayed in the unusual orientation for about 440 years. At most, Earth’s magnetic field may have remained at 25 percent of its current strength as the north polarity drifted to the south.

Recent magnetic field anomalies like

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have led to questions about an impending reversal today,

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suggests these anomalies are not necessarily connected to flipping events.

The

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is, however, exposing satellites in the area to higher levels of radiation.

Since 2013, ESA’s Swarm constellation has been measuring magnetic signals from Earth’s core, mantle, crust, oceans, ionosphere, and magnetosphere so we can better understand our planet’s geomagnetic field and predict its fluctuations.

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