Earth's axis has tilted noticeably over the past two decades, and now we know why

If you felt a little imbalance, you can blame your friends. groundwater pumping caused the Earth to tilt 31.5 inches in 17 years, or about 1.8 inches per year.

As reported by outlets in recent days, including Popular science and: USA TodayBetween 1993 and 2010, the pumping of 2,150 gigatons of groundwater shifted the Earth's tilt by more than two feet. published in Geophysical Research Letters in June last year.

Most groundwater pumping is for agricultural irrigation, and the water we use for drinking, bathing, and other domestic and industrial purposes appears to be the redistribution of water from its natural streams.

The Earth has always had a tilt of 23.5 degrees to its axis, that's why we have: the seasons and: summer time.

The pumped groundwater eventually makes its way to the oceans and has contributed modestly to sea level rise.A more significant contributor to sea level rise has been climate change resulting from the burning of fossil fuels, which has led to the melting and melting of glaciers. sea ​​ice. In both cases, human activities affect the water balance of the planet.

The study was led by Ki-Weon Seo of Seoul National University and followed similar findings dates back to NASA in 2016.

"The rotation pole of the Earth actually changes a lot." Seo said in a statement when the research was published. "Our study shows that groundwater redistribution actually has the greatest impact on the movement of the rotating pole."



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