Earth’s Inner Core Has Warped Over the Past Two Decades, Scientists Say
At the center of our planet is a very hot rotating ball of mostly iron and nickel (sorry Journey to the Center of the Earth fans). Scientists infer features of this innermost geographic layer—like the fact that it’s divided into a liquid outer core and a solid inner core—by analyzing how it distorts seismic waves caused by earthquakes.
Earthquakes excite the Earth’s subsurface over a small area, and waves of energy then propagate through the solid earth. Depending on the depth of the waves and the materials they encounter, they can ...
ZME Science on MSN10d
Marsquake Waves Are Moving Faster Than They Should and It’s Not Clear WhyNow, researchers have connected 49 seismic events to impact craters, proving that meteorite strikes leave distinct seismic ...
Study Finds on MSN1d
Earth’s inner core is deforming—here’s what we knowIn a nutshell Scientists have discovered that Earth’s inner core isn’t just changing its rotation speed – it’s actually ...
New Scientist on MSN3d
Forces deep underground seem to be deforming Earth's inner coreSeismic waves suggest the planet's solid inner core is being pulled out of shape – and it has undergone these changes over ...
Research reveals structural changes in the inner core's surface, indicated by differences in seismic wave pairs.
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