Largest ever underwater eruption gives birth to new volcano

 The largest submarine eruption in history, which occurred in May 2018 and felt around the world, has given rise to a new volcano under the sea, the DailyMail revealed on September 30. Analyzed by researchers, it could help us understand still unknown tectonic processes.

Off the east coast of the island of Mayotte, the giant volcano rises to 820 meters from the bottom of the sea . At first, scientists were puzzled, but it didn't take long to make the connection with a volcanic event unlike anything seen before, which occurred in May 2018. “ This is about the largest active underwater eruption ever documented, ”the researchers write.

The seismic tremors of the event began on May 10, 2018. A few days later, on May 15, a magnitude 5.8 earthquake struck and shook a nearby island . "  The volume and flow of lava emitted during the Mayotte magmatic event are comparable to those observed during eruptions of the largest hot spots on Earth, " describe the researchers. The team of scientists then began monitoring the area from February 2019. They used multi-beam sonar to map an area of ​​8,600 square kilometers of seabed. They also placed an array of seismometers at the bottom of the ocean, at a depth of 3.5 kilometers, and combined it with seismic data from Mayotte.

This is where an underwater mountain appeared that did not exist before. Led by geophysicist Nathalie Feuillet of the University of Paris, the scientists described their findings in a new article . Since the discovery of this new volcano , an observatory has been set up to monitor its activity in real time and follow the evolution of the eruption and the growth of the mountain.

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