Bouncing seismic waves reveal distinct layer in Earth's innercore ANUmedia NatureComms
inner core
Professor Hrvoje Tkalčić, also from ANU, said studying the deep interior of Earth's inner core can tell us more about our planet's past and evolution.—it's a fossilized record that serves as a gateway into the events of our planet's past. Events that happened on Earth hundreds of millions to billions of years ago," he said.
One of the earthquakes the scientists studied originated in Alaska. The seismic waves triggered by this quake"bounced off" somewhere in the south Atlantic, before traveling back to Alaska. They say it might explain why the waves speed up or slow down depending on their angle of entry as they penetrate the innermost inner core.
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