Seismic echoes reveal a mysterious ‘donut’ inside Earth’s core
theconversation.com
Like a piece of music, every earthquake has a coda – and it contains clues about what’s happening in our planet’s core.
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The original was posted on /r/science by /u/Hrmbee on 2024-08-31 00:32:52+00:00.

Original Title: Scientists discover a large donut-shaped region of the core around the Equator a few hundred kilometres thick, where seismic waves travel about 2% slower than in the rest of the core | Seismic low-velocity equatorial torus in the Earth’s outer core: Evidence from the late–coda correlation wavefield