Symmic waves vibrated from an island near Africa and hit Canada. Their cause is a mystery



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If seismic waves emerge from an island away from Africa and hit Canada, who can feel it?

Apparently not – judging by a phenomenon that materialized earlier this month.

Coverage of earthquakes on Globalnews.ca:


The unusual seismological phenomenon was brought near the Mayotte Island, off the coast of Madagascar on November 11th.

They are being deleted freely by Twitter user @Tatarikipax, who posted US. Geological survey data showing them are detected at a monitoring station in Kilima Mbogo, Kenya.

The same user tweeted that waves were also detected in Zambia, Ethiopia, Spain and New Zealand.

John Cassidy, An earthquake simulator with Natural Resources Canada (NRCan), later including the prize, saying that the waves were detected right across Canada, in Victoria, Haida guays, Toronto, Ottawa and Halifax.

Clearly, the waves are spotted all over the planet.

But no one was felt to them, even where they were born – and that they had given an oyster of mystery, Cassidi told global news.

No one can explain exactly what they have happened.

Read more: magnitude 6.8 Earthquake Strikes Greek Tourist Island

Normally, a tectonic earthquake generates primary waves (p-waves) and secondary waves (s), but this one does not produce.

The earth moved up and down every 17 seconds as the waves flowed – "very slowly shaking," Cassidy said.

It is possible that an earthquake happened, but if it was, the event was not a "typical" one, he added.

"Based on the seismic events and GPS formation data, it is likely a volcanic link – movement of magma chambers, etc.," Cassidy said.

The seawmic waves were built in an area where there was an earthquake swarm earlier this year.

Miteote, which is produced by volcanic activity, saw "hundreds of seismic events" recorded in the area starting in May, according to French geological Surveyor BGM.

The first one died on May 10th. Then, five days later, the cruise island of Comoros experienced a magnitude -5.8 earthquake, which was the biggest it ever recorded.

The smoke of the 7,746-foot (2,361-meter) Mount Kardhala on Monday, May 29, 2006, on Grand Comoror, is the largest of the three Comoros Islands. Mount Kahhaha last erupted in April 2005.

App photo / Julie Morin

Following seismic events took place in the area but they have been tapped since July.

"This indicates that the seismic energy free has weakened since the beginning of the crisis, although some earthquakes are still being felt by the population," said BRGM.

The cause of the swarm is still installed, but researchers believe it could be a combination of tectonic and volcanic effect – although not yet confirmed.

BBC International Region has experienced an earthquake swarm in 2007, after it has never recorded in the past.

The swarm is attributed to magma being injected into the lower crust under the anahim volcanic belt, a phenomenon that produces "high-frequency, volcanic-tectonic earthquake and spasmodic bursts."

Read more: 3 earthquake measuring between 6.5 and 6.8 degrees knock off Vancouver Island

Should volcanic activity be confirmed by life mayote, then this would be the first to hit the area in over 4000 years.

And the matter to Western Canada, Cassidy noted – there are also a number of volcanoes that have been dormant for thousands of years and they can act again in the future.

"Understanding Mayotte's understanding will help us to understand the volcanic hazards here in Canada," he said.

© 2018 Global News, a division of Corus Entertainment Inc.

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