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A scientific study published in the journal Nature shows this Earth’s core stop and may rotate away from the surface, Which can shorten the day by a few milliseconds, and affect the weather and sea level.
Researchers Yi Yang and Xiaodong Song, both affiliated with the Institute of Theoretical and Applied Geophysics of Peking University, are the authors of the work, analyzing about 200 earthquakes in the South Sandwich Islands, near the South Pole, that occurred between 1960 and current dates,
This was done because the contrast of the seismic waves passing through the planet shows the internal composition of the core, as well as its rotational speed.
After reviewing the movements with computer models, it was found out Earth’s core slowed down in 2009 and since then has been spinning slower than the crust.According to the information collected by Country.
“When seen from space, the core rotates at about the same rate as the rest of the planet. But from the point of view of the surface, where the seismic stations are located, the core now rotates in the opposite direction; to the west,” Song explained to the Spanish outlets.
But this phenomenon also occurred in the mid-1970s, which would allow scientists to conclude that there are seven-decade oscillation cycles.
the core of the earth, A planet within our planet consists of two parts: inner and outer. to whom he follows Earth’s mantle and the outer bark
How many days will be shortened by the effects of the Earth’s core?
Chinese scientist Xiaodong Song explained that in recent years, the days have been getting shorter and this may be due to an anomaly in the Earth’s core, and this would represent that Today is a thousandth of a second shorter than it was in 1970.
In addition, the rotation of the inner part causes changes in the internal gravitational field and causes deformations on the surface, which can affect the Sea level, as well as affect the planet’s global temperature.
In addition, Song, who worked in the United States in previous years, showed in another study that the Earth’s inner core rotates faster than the crust.
This means that The core makes an extra revolution around the rest of the planet every 900 years or so, which makes days not be exactly 24 hours long; It is estimated that 1.4 billion years ago the day was approximately 19 hours long. _ Information from El Pais
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