Q-WAVES RIPPLE AROUND THE WORLD ON NOVEMBER 11.

17 SECOND REPEAT…

Strange waves rippled around the world, and nobody knows why

Instruments picked up the seismic waves more than 10,000 miles away, but bizarrely, nobody felt them.

On the morning of November 11, just before 9:30 UT, a mysterious rumble rolled around the world.

The seismic waves began roughly 15 miles off the shores of Mayotte, a French island sandwiched between Africa and the northern tip of Madagascar.

There was no big earthquake kicking off the recent slow waves. Adding to the weirdness, Mayotte's mystery waves are what scientists call monochromatic. Most earthquakes send out waves with a slew of different frequencies, but Mayotte's signal was a clean zigzag dominated by one type of wave that took a steady 17 seconds to repeat.

https://www.nationalgeographic.com/science/2018/11/strange-earthquake-waves-rippled-around-world-earth-geology/