The rotation of the Earth's core has ceased and it may now reverse
The rotation of the Earth's core has ceased and it may now reverse
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USA: Recent research claims that the rotation of the Earth's inner core has "stopped". The fast rotation rate of the inner core stopped in 2009, according to earthquake data.

It is possible that the rotation of the inner core is changing its direction as part of a cycle lasting up to 70 years; This cycle can have an effect on the magnetic field and the length of Earth's day. However, this possibility has not been confirmed.

Studying Earth's core, or heart, can be especially challenging. Creating Earth's protective magnetic field, which prevents harmful radiation from reaching the surface, is a process that makes our planet habitable, and it's something we know the core plays. Questions about the future of the are raised by the latest research.

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According to the study, Earth's core pauses and reverses on a regular cycle lasting between 60 and 70 years. These discoveries may shed light on the riddles surrounding the geological and climatic phenomena that are related to timescales.

Although Earth's surface atmosphere is affected by the core's spin, scientists believe this periodic spin switch is normal and does not threaten life.

Earth's inner core was first discovered in 1936, after research into how seismic waves from earthquakes move across the planet. The approximately 7,000 km-wide core is composed of an outer shell made of liquid iron and other elements, of which the solid center is mainly composed. Of iron. The inner core makes up about 75% of the size of the Moon.

The condensation of the outer liquid crystallizes on the surface of the inner core as iron from the outer core, which ultimately helps maintain Earth's magnetic field. The 2,400 km-wide inner core is separated from the rest of the planet by a liquid outer core, allowing it to rotate freely.

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The rotation of the inner core with respect to the mantle has stopped. The researchers found that the rotation of the inner core stopped around 2009 after studying mainly earthquakes between 1995 and 2021.

It was determined through monitoring multiple locations around the world that the event was a global one and not just a local one on the surface of the inner core.


The information also indicates that the inner core may also change its direction of rotation. If so, the magnetic and gravitational forces controlling the rotation of the inner core may have changed. These changes in the core can result in a change in the length of a day on Earth.

Study researchers Yi Yang and Xiaodong Song told Motherboard that gravitational coupling between the inner core and mantle "could cause deformation on Earth's surface, which would affect sea level."

"The circulation and temperature of the global atmosphere can be affected by variations in sea level and Earth's rotation. Interactions between different systems can also be enhanced by their resonances."

The following steps are, in the words of Yang and Song, "to develop quantitative models of the physical system on the multi-decadal oscillation system" and "to track how the rotation changes in the future."

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"We expect it to move west relative to Earth's surface over the coming years and decades," said two seismologists from Peking University in Beijing.

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