Friday, January 27, 2023

Something happens to the Earth’s core: it stalls and the days will be shorter

written in World

A scientific study published in the journal Nature has shown that the Earth’s core has stopped and is probably rotating in the opposite direction to the surface. Which can shorten a day by fractions of a second, affecting weather and sea levels.

Yi Yang and Xiaodong Song, researchers belonging to Peking University’s Institute of Theoretical and Applied Geophysics, are the authors of the work, in which they analyzed nearly 200 earthquakes in the South Sandwich Islands near the South Pole, which occurred between 1960 and 1960. and current date,

This was done because the variation of seismic waves passing through the planet reflects the internal structure of the core, as well as its rotation speed.

After reviewing the movements with computer models, it showed Earth’s core slowed down in 2009 and has been rotating slower than the crust since per the information gathered by country,

“Viewed from space, the core rotates at roughly the same speed as the rest of the planet. But from the point of view of the surface, where there are seismic stations, the core is now rotating in the opposite direction; to the west,” Song explained to the Spanish outlet.

But the phenomenon also occurred in the mid-1970s, leading scientists to estimate that the oscillations are cycles that have a period of seven decades.

parts of the earth. Credits: UNAM

earth core, A planet within our planet, is made up of two parts: the inner and the outer. for those who follow earth cover And this outer bark

.How short would the days be due to the influence of the Earth’s core?

Chinese scientist Xiaodong Song explained that in recent years, the days were getting shorter and this may be due to the anomaly of the Earth’s core, indicating that A day is one second shorter today than in 1970,

In addition, the rotation of the core causes changes in the internal gravitational field and causes deformations on the surface, which can affect sea ​​level, as well as affect the global temperature of the planet,

In addition Song, who had worked in the United States in previous years, demonstrated in another study that the Earth’s inner core rotates faster than the crust.

it means that The core makes one additional orbit around the rest of the planet every 900 years., due to which the days are not exactly 24 hours long; It is estimated that 1.4 billion years ago there were about 19 hours in a day. _With information from Al País

Nation World News Desk
Nation World News Desk
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