Earlier this month, seismic stations from Madagascar to Canada seized mysterious spells that spoke for more than 20 minutes, and most people did not know.
Researchers and earthquake enthusiasts who spotted signals have narrowed their origins to a region adjacent to the coast of Majokas in the Indian Ocean.
But no one is absolutely sure of what caused a strange event.
From May 11th, slow waves found in Mayotte are usually observed after major earthquakes and are known to produce long distances, but such an earthquake did not occur.
Researchers and earthquake enthusiasts who spotted signals have narrowed their origins to the region next to the coast of Mayotte Island (shown in the Indian Ocean). But no one is absolutely sure of what caused a strange event
"I do not think I've seen anything like that," said National Geographic, a seismologist at Columbia University, Georan Ekström, who specializes in unusual earthquakes.
But he adds: "This does not mean that ultimately their cause is so exotic."
The focus of the online seismological community is Twitter, which for the first time discovered a strange phenomenon on the morning of November 11th.
Twitter, who received the attention of the seismological community, first discovered a strange phenomenon on the morning of November 11th. Scientists and earthquake enthusiasts similarly tried to narrow it
"It's an odd and unusual seismic signal" Tweet The user @matarikipax wrote along with a seismograph reading from Kilima Mbogo, Kenya.
During this day, others can refer to the conversation to indicate where the low-frequency waves were still found: Chile, New Zealand, Canada and Hawaii.
According to National Geographic, the signals generated by the Mayotte waves were clean, with a zigzagging principle, mostly on the same type of wave that took 17 seconds to repeat it.
Such waves are known as monochromatic.
The strange waves were tracked to a place about 15 miles from the French island of Mayotte
Scientists are working to understand who inspired the mysterious spells of this day. To date, many have suspected that they are linked to the continuous seismic forest in the region that started last May.
But even then, on November 11, there was no proper earthquake.
Researchers from the French Geological Survey (BRGM) have argued that this could signal that magma under the volcanic island is moving offshore.
Others say that there may have been a "slow" earthquake that simply went unnoticed or an underwater eruption.
"The approval of the site places it near the Comoros," said researchers who found a search.
Experts say the region's complex geology combines this problem further by potentially filtering some spells to make a clear signal, reports NatGeo.
Scientists plan to look at the ocean to find out any additional information that could help explain the mysterious phenomenon.
But experts at this stage agree that there is too much that we do not know to say what really was to blame.
WHAT IS WATER WATER SELECTED?
The magnitude of the earthquake differs from its intensity.
The scale of the earthquake relates to the measurement of released energy in the event of an earthquake.
The magnitude is calculated on the basis of measurements on seismographs.
The intensity of the earthquake relates to how strong the sensation results from the search.
On Thursday afternoon At 10.30, the Channel Islands on the southern coast of California reached a magnitude 5.3 earthquake
According to the US Geological Survey, "the intensity is determined by the impact on humans, human organs and the natural environment".
Earthquakes occur under the earth's surface in a region called the hypochondria.
During the earthquake, one part of the seismograph remains unchanged and one part moves with the earth's surface.
The earthquake is measured with the difference between the rigid and moving parts of the seismograph.