Magnetic field: Two gigantic underground bubbles can crack the earth magnetic field – it has been growing in size for at least two centuries and is now beginning to divide. Scientists suspect that this change, known as the South Atlantic Magnetic Anomaly (AMAS), is caused by two bubbles of dense material recently discovered in Earth’s mantle. Each of these (called “dent” by NASA, or teeth in literal translation) are millions of times larger than Mount Everest.
Research indicates that these bubbles, also known by the abbreviation LLSVPs (large low-shear velocity fields), may be the remains of Theia, an ancient planet the size of Mars that is believed to have coincided with the earth has collided. The problem is that this rift, located between South America and South Africa, has wreaked havoc on satellites and spaceships sailing over it. And it gets worse: it disrupts the levels of solar radiation that the planet receives and increases the amount of solar particles passing through the planet. magnetic field, that can cause malfunctions in computers and circuits.
The earth magnetic field is generated by the swirling iron in the planet’s outer core, where the hottest material rises to the partially solid mantle and is replaced by denser material – a process called convection. Scientists believe the strange change in the magnetic field is caused by something big disrupting this process under the Atlantic. As it turned out recently, the two LLSVPs could be significant enough to affect these convection currents, as suggested by geochemist Qian Yuan, who led the research on Theia’s remains.
Questioning the theory
Although the possibility is the cause for the change in the Earth magnetic field In fact, the remnants of the planet that gave rise to the moon is very tempting, there are still unanswered questions and even contrary to Yuan’s theory. Geophysicist Christopher Finlay of the Technical University of Denmark points out that the same weakness in the magnetic field does not occur over the Pacific Ocean, where part of one of the bubbles is located.
While it is only speculation for now, theories like these create the possibility of further in-depth studies that could in turn lead to discoveries about the magnetic field that surrounds our planet and directly affects our lives.