Mysterious seismic waves that cascaded around the world this month have scientists scratching their heads.
On the morning of November 11, peculiar seismic ripples were detected 15 miles off the coast of Mayotte, a French island between Mozambique and Madagascar in the Indian Ocean.
The swarm then travelled through Africa, pinging sensors in Zambia, Kenya, and Ethiopia. Next, it crossed oceans to Spain, Chile, New Zealand, Canada, and even the Hawaiian Islands.
The strange waves pulsed for a total of 20 minutes, unfelt by humans, according to National Geographic on Thursday. They have not been reported to have caused any damage.
It seems the event was first noticed by Twitter user @matarikipax who shared a US Geological Survey seismogram display from Kilima Mbogo, Kenya, noting, “This is a most odd and unusual seismic signal.”
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Originally Posted by kpitcher
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