Earth

Earth: Is the Earth’s inner core solid? Research challenges the old belief

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It has always been a difficult task for scientists to get information about the Earth’s internal structure. So far, whatever has been known about this has been known only through the analysis of seismic waves. It has been believed that the inner core of the Earth is the hottest place on our planet. It is made of metals like iron and nickel and is completely solid. Scientists used to think that there was enormous pressure on the inner core due to the solidity of the inner core. But the new study claims that many such revelations show that this is not true.

Whenever an earthquake occurs at any place in the world, the vibrations spread all over the planet in the same way as ripples on a Pond spreads on all sides when a stone is thrown in a pond. But the way these waves spread on the pond’s surface and are affected by the boat present there, by the floating wood, or by colliding with the waves created by the fall of other stones. In the same way, seismic waves emanating from the interior of the Earth are affected.

When these seismic waves pass through different materials or states of the same material, such as liquid and solid Iron, they bend. It can be detected by the data of these waves. But for a long time, the core of the Earth has been believed to be completely solid. This new study, published in Physics of the Earth and Planetary Interiors, questions this assumption.

Seismologist Jessica Irving of the University of Bristol in England, who was not part of the study, told Live Science that the more we study, the more we realize that the Earth’s inner core is just a dull Iron is not a ball. We are coming face to face with the whole world of the hidden whole. Perhaps this is the reason why old beliefs are being challenged in this way.

Geophysicist Rat Butler of the Hawaii Institute of Geophysics and Planetology studied the data of earthquakes on the other side of the world. He found that the numbers that should have come after calculating in his mathematics are not coming. Butler says that it is essential to match your figures in this business. Butler says that what we were assuming about the core of the Earth is wrong. Seismic calculations are accurate when the inner iron core is not completely solid.

Butler says, “We have seen evidence that shows that the core of the Earth is not soft everywhere and in many places, it is solid. There are also solid areas over sites like melt and pudding in many places. Therefore, a lot of such detailed information is being received which has never been found before. This can have wide-ranging effects, and the most significant impact will be on the Earth’s magnetic field. A slight change in the Earth’s inner core will profoundly impact this protective shield of the Earth.

Earth’s magnetic field is the result of the rotation of its liquid outer core. Where the solid inner core affects its strength, size, and other characteristics, if the inner core is not completely solid or is irregularly solid, then its effect should also be on the magnetic field. What kind of effects are these? It is not clear. Even it is not clear whether it affects the magnetic field or not. But new data can also give information about this protective shield.