Earth’s Core changing: Change in Magnetic Field of Earth
The inner layers of our earth are quite active, but in a recent study, something strange has been found in one of these layers. Scientists from the University of California have found that the Earth’s iron core is expanding more than one side. This movement has been found under the Banda Sea of Indonesia. This change is occurring due to crystal formation from molten iron but it is happening more on one side, and less, on the other, under Brazil.
Earth’s core is changing
Researchers believe that this may be due to the Earth’s magnetic field. Earth’s core is made up of iron with a liquid outer core and then a rocky mantle. The heat from the crystal forming iron and the rock comes out and the cold material goes down. This creates a magnetic field. As more heat from the inner core moves from east to west, the outer core also moves east, but scientists still don’t know how this will affect Earth’s magnetic field.
Growing South Atlantic Anomaly Region
On the other hand, it has been found earlier that the Earth’s magnetic field weakens between South America and the South Atlantic Ocean. This area is called the South Atlantic Anomaly (SAA). Worryingly, this region is expanding and moving westwards. It is believed that in the coming five years, it will have spread 10% more than in 2019.
decrease in magnetic field
For the last few years, there was a decrease in the magnetic field on the radar of experts. The intensity of the magnetic field has decreased by 9 percent in the last 200 years. Meanwhile, there has been a significant reduction in the magnetic field recently over a large area between Africa and South America. Scientists said that the change in the poles does not happen suddenly and it happens gradually. This change occurs every 2,50,000 years.
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