Study shows Earth’s core has slowed down and is changing direction: what does that mean?

Scientists have found that basic from Earthafter short breaks, has been changing the way he tours for many years now.

Seismologists who published a study in natural scienceindicate that Earth undergoing great internal changes, but they also remembered that there is no real danger to humanity.

What is happening in the core of the Earth?

basic The interior is like “a planet within a planet, so how it moves is obviously very important,” said Xiaodong Song, a seismologist at Peking University in Beijing and author of the study.

In 1936, the Danish seismologist Inge Lehmann discovered that basic liquid external Earth includes “hard metallic marble”. Scientists believe that basic crystallized into a soup of molten metal somewhere in the recent past Earthafter the inner hell of the planet cools down enough.

basic The interior cannot be directly sampled, but energetic seismic waves emanating from powerful earthquakes and nuclear weapons tests have ventured through basic internal, illuminating some of its properties. Consisting mostly of iron and nickel, scientists suspect this orb is 2,449 kilometers long and as hot as the surface of the sun.

For researchers, if the core were inert, the paths of the waves that plunge into the core from nearly identical earthquakes and nuclear explosions would never change; however, over time they do.

For the same reason, they assume that basic it spins, deflecting the waves. On the one hand, the magnetic field Earth, created by the vortex iron currents in the liquid outer core, attracts the inner core, causing it to rotate. This impulse is counteracted by the mantle, a layer above the outer core and under the Earth’s crust, whose huge gravitational field captures the inner core and slows its rotation.

Now he’s turning back

In the midst of this study of seismic waves since 1960, the seismologists who are the authors of the study postulate that the collision of forces caused basic internal ones rotate back and forth in a 70-year cycle.

Since 1970 basic The inner surface gradually rotated faster to the east, eventually outpacing the rate of rotation of the Earth’s surface. Earth. Subsequently, the rotation of the inner core slowed down until it stopped sometime between 2009 and 2011.

basic inner now begins to gradually turn west relative to the surface Earth. It will likely speed up and then slow down again, stopping once again in the 2040s and completing its last cycle of turning east and west.

Will it have consequences for humanity? No. According to the scientists, “this could cause only minor changes in the planet’s magnetic field, or even a very slight change in the length of the day, which is known to wax and wane by a fraction of a millisecond every six years.”

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