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really has slowed down, a new study has confirmed, opening up questions about what's happening in the center of the planet and how we might be affected.
Led by a team from the University of Southern California , the researchers behind the finding think this change in the core's rotation could change the length of our days – albeit only by a few fractions of a second, so you won't need to reset your watches just yet.Earth scientist John Vidale from USC."But when we found two dozen more observations signaling the same pattern, the result was inescapable.
"The inner core had slowed down for the first time in many decades. Other scientists have recently argued for similar and different models, but our latest study provides the most convincing resolution.". Located more than 3,000 miles below our feet, it's far from an easy object to study, though learning about its features could teach us a lot
In this study, Vidale and his colleagues analyzed readings from 121 repeating earthquakes recorded between 1991 and 2023 around the South Sandwich Islands in the South Atlantic. They also added in data from several nuclear tests. Each of these events caused significant reverberations through the planet.By charting how those waves speed up, slow down, and interact, researchers can estimate the position and movement of the inner core.
" very hard to notice, on the order of a thousandth of a second, almost lost in the noise of the churning oceans and atmosphere,"– and the spin of the Earth's inner core is something scientists are going to continue to keep a very close watch on.
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