Unusual Seismic Waves Rumbling Around the Planet Likely Caused by Magma Shift, Experts Say
Unusual seismic waves traveled around the world on Nov. 11 and experts now think a magma shift is the cause of the mysterious event, according to the Guardian.
The rumbling originated just offshore of Mayotte, an island between the southeast coast of Africa and Madagascar, before shaking through Africa. Locations in Zambia, Kenya and Ethiopia recorded the rumbling. Even further away, places in Chile, New Zealand, Canada and Hawaii picked up the rumblings that sped around the globe at 9,000 miles per hour.
What the French Geological Survey (BRGM) called the "atypical very low-frequency signal" was a repeating wave that would register about every 17 seconds and lasted some 20 minutes total. Strangely, nobody felt it.
“What’s unusual is you see this very long signal traveling most of the way around the world which hasn’t been detected by operational earthquake detection systems,” University of Southampton seismologist Stephen Hicks told the Guardian.
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