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Strange Waves Rippled Across Earth And Only One Person Spotted Them
On November 11 there were strange rumbling waves that traveled at 9,000mph across the globe, nearly undetected and unnoticed by the world. Except for one person, a seismologist, who spotted the signal and quickly put out an alert to see if other systems detected the same unusual wave.
The waves began 15 miles off the coast of the small French island of Mayotte, wedged between Madagascar and Mozambique. Seismographs picked up the waves as they traveled as far as New Zealand, Chile, Hawaii and Canada. In total, the waves were detected as far as 11,000 miles from their origin, ringing for 20 minutes or more minutes as they passed. It took only 40 minutes for the waves to travel from Mayotte to the UK and 75 minutes to reach the Hawaiian islands.
As these waves rippled across the globe there were surprisingly no reports of anyone feeling the rumbling. How can a wave be powerful enough to span the entire planet yet no one feels it and largely went unnoticed initially?
https://www.forbes.com/sites/trevornace/2018/12/03/strange-waves-rippled-across-earth-and-only-one-person-spotted-them/
The Mayotte event lacked P waves and S waves, but did cause a long-period surface wave travelling at 14,000 km/h (9,000 mph) around the globe. Additionally, the signal released by the earthquake resembled a clean sine wave, while most earthquake waves have multiple frequencies.
https://en.wikipedia.org/wiki/11_November_2018_Mayotte_seismic_event