The magnetic field of the Earth is turned over with a terrible sound: it does not look like anything that we heard

14 February 2025, 20:53 | Technologies
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The Earth’s magnetic field is created by swirling liquid metals in the nucleus of our planet and extends by tens and hundreds of thousands of kilometers into space, protecting us and deflecting the atmosphere of sunny particles. It is known that a little over 40,000 years ago the planet’s magnetic field changed dramatically and now scientists were able to reproduce this coup, writes Science Alert.

In the 2024 study, the team from the Technical University of Denmark and the German Research Center for Earth Science used data collected by the Swarm satellites of the European Space Agency. Scientists managed to skillfully interpret and compile the data, as a result of which the team managed to reproduce the terrible sound of the coup of the Earth’s magnetic field - it is not like anything that we heard earlier.

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By combining satellite data with evidence of the movements of the magnetic field lines on Earth, European geologists compiled a map of the so -called Lashamps event and presented it with the help of noise, such as the creak of wood and the roar of colliding stones. As a result, the team managed to create something incredible.

In their current orientation, the field of the field is formed by closed loops directed from south to north above the surface of the planet, and then from north to south deep inside it. However, from time to time, the field randomly changes its polarity. If this happened today, our compasses pointing to the north would point to the South Pole.

The last catastrophic event of this scale occurred about 41,000 years ago, leaving a trace in the flows of lavas in France. When the field weakened only to 5% of its current power, the process of inversion allowed an excess of space rays to penetrate the atmosphere of the Earth.

Ice and sea deposits are guardians of isotopic traces of this higher than usual, solar bombing. Researchers also found that the levels of isotopes of Beryli-10 have doubled during the event. These altered atoms are formed when cosmic rays react with our atmosphere, ionizing air and frying the ozone layer. Since the global climate change is a potential consequence, it is assumed that the extinction of Australia Megafauna, as well as changes in the use of caves by a person, could be associated with this event.

According to the co -author of the study, the geophysics of the German research center Gonauke Sanya Panovsk, the understanding of such extreme events in the history of the Earth is extremely important for their occurrence in the future, as well as forecasts of space climate and evaluating the environment and land system.

It took 250 years for Lashamps inversion, and it remained in an unusual orientation for about 440 years.

The Earth’s magnetic field could remain at a maximum of 25% of its current force, since the northern polarity has shifted to the south.

Scientists have been observing the magnetic field of the Earth and the recent anomalies of the magnetic field for years, for example, weakening over the Atlantic Ocean, again raised the issue of impending inversion. However, the results of recent studies indicate that they are not necessarily associated with the future coup of the Earth’s magnetic field, Focus wrote that the Earth’s magnetic field appeared earlier than the nucleus formed.

Based on materials: sciencealert.com



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