Mayotte is in a number of tectonic fracture zones including those originating from the rupture of the Gondwana supercontinent (Adobe Stock: Jrme)
Mysterious ripples of seismic waves have traveled thousands of kilometers around the world, penetrating censorship throughout Africa, Canada, New Zealand, and Hawaii, apparently without being felt by even one person.
The main point:
- Seismic waves that began off the coast of Mozambique triggered sensors in Kenya, Chile, New Zealand and Canada
- The tremor lasts more than 20 minutes
- The earthquake was not known until it was picked up by earthquake fans online
The vibrations began right off the coast of Mayotte, a French archipelago in the Indian Ocean between Madagascar and Africa, and will fly under the radar if not for fans of earthquakes in New Zealand tuned to the US Geological Survey real estate. the time the seismogram is displayed online.
They post reading pictures to Twitter, encouraging researchers around the world to try to infer where these strange waves come from.
Unlike traditional earthquakes, which produce a jolt of various high-frequency waves, readings from the Mayotte tremor take consistent low-frequency waves that last more than 20 minutes. As if the planet is ringing like a bell.
Online theorists suggest nuclear tests, sea monsters, or meteorites as the cause of the earthquake, but Goran Ekstrom, an earthquake expert at Columbia University, told National Geographic, the explanation might be straight forward.
"I don't think I've seen anything like this [but] that does not mean that, in the end, the cause is exotic, "he said.
Professor Ekstrom argues that seismic events really begin with earthquakes. He thought it passed quietly because it was a slow earthquake.
Slow earthquakes are quieter than traditional earthquakes because they come from gradual stress releases that can stretch over a significant period of time.
"The same deformation occurs, but that doesn't happen as a surprise," said Professor Ekstrom.
Since May this year, Mayotte has experienced what is known as & # 39; a cluster of earthquakes & # 39; a group of hundreds of seismic events for several days or weeks, but these activities have been significantly reduced in recent months.
Seismology reading managed to capture & # 39; ghost & # 39; earthquake on the graph. (Anthony Lomax via Twitter)
Analysis by the French Geological Survey shows strange waves can show the mass movement of magma under the earth's crust, such as the collapse of space.
Rhythmic movements, such as melting stone spills, or pressure waves that bounce through the body of the magma have the potential to resonate in a manner similar to reading Mayotte.
The Democratic Republic of the Congo is the site of a similar event in 2002, where the same slow earthquake and low frequency waves were linked to the magma space which collapsed beneath the Nyiragongo volcano.
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