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Earth's Inner Core May Have Changed Shape, Say Scientists
Scientists have found evidence suggesting that Earth's inner core has changed shape over the past 20 years, possibly deforming at its edges due to interactions with the liquid outer core and gravitational forces. The BBC reports: The inner core is usually thought to be shaped like a ball, but its e...
The BBC reports: The inner core is usually thought to be shaped like a ball, but its edges may actually have deformed by 100 million or more in height in places, according to Prof John Vidale who led the research. Prof Vidale, an earth scientist at the University of Southern California, found more evidence to back up the theory that during those years the inner core slowed down around 2010. Prof Hrvoje Tkalcic from Australian National University said the findings could allow scientists "to make more informed estimates of some important material properties, such as the viscosity of the inner core, which is one of the least known quantities in modern science."
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