Is the Earth’s core moving in the opposite direction?

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Is the Earth’s core moving in the opposite direction?


Wednesday – 3 Rajab 1444 AH – January 25, 2023 AD Issue number [
16129]

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The core inside the planet Earth (Natur)

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London: «Asharq Al-Awsat»

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The Earth’s core has stopped rotating and may have started moving in the opposite direction, in a conclusion that will escalate the existing debate among specialists on this issue, according to a study in the journal Nature Geoscience. This “planet inside the Earth” is composed mainly of iron, and is located at a depth of 5,000 km below the Earth’s surface, according to Agence France-Presse.
The exact process of the core’s rotation is a matter of debate, because the limited information available is based on careful analysis of seismic waves generated by earthquakes as they pass through the center of the planet. After researchers, Xiao Dong Song and Yi Yang from Peking University, analyzed seismic wave data for the last 60 years, they concluded that the rotation of the nucleus “became almost stopped in 2009 before resuming moving in the other direction.”
The two specialists said: “We believe that the central nucleus rotates each time in a direction relative to the Earth’s surface, similar to the motion of a swing.”
They pointed out that “the full cycle (in both directions) of the central nucleus takes about seventy years.” The last change in rotation before that which occurred in 2009 dates back to the early seventies of the twentieth century, while the next change will be recorded in the mid-forties of the current century, thus completing the nucleus cycle, according to the two Chinese researchers.
The two scientists indicate that this rotation depends in one way or another on changes in the length of the day, which are small differences in the exact time that the Earth needs to rotate around its axis.
To date, there are few indications of the effect of this rotation on what happens on Earth’s surface. However, the two researchers are convinced that there are real physical connections between all the layers that make up the Earth. “We hope that our study will motivate other researchers to design and test models that treat the Earth as an integrated dynamic system,” they say. The study received the attention of independent experts, who, on the other hand, expressed certain reservations about it. John Vidal, an earthquake expert at the University of South California, said, “It is a very accurate study prepared by two excellent scientists based on a large amount of data,” but he saw that “none of the existing models explains well all the available data.”

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