The discovery of a mysterious hole in the Atlantic Ocean may solve a mystery 66 million years ago
The discovery of a mysterious hole in the Atlantic Ocean may solve a mystery 66 million years ago
The ocean floor is famous for being less explored than the surface of Mars . Recently , when a team of scientists was mapping the sea floor, and the ancient sediments beneath it, they discovered what looked like a volcano crater believed to have resulted from an asteroid collision with Earth.
Professor Yosdem Nicholson at the University of Edinburgh said: "Further study of the crater, which has been called 'Nare', could destabilize what we knew about that catastrophic moment in Earth's history."
Professor Nicholson noted that he found the crater by chance while reviewing data from another project on the seismic survey of the South American and African Tectonic Division, and found evidence of a crater at a depth of 400 meters from the sea floor.
important discovery
He said it would be necessary to drill into the crater and test minerals from the crater floor. To be absolutely certain that the crater was caused by an asteroid impact, but it has all the distinguishing features that scientists would expect.
If confirmed, it would be of great scientific interest because it would be one of very few marine asteroid impacts known, thus giving unique new insights into what happens during such a collision.
The crater is 8 kilometers wide, and Nicholson believes it was most likely caused by an asteroid more than 400 meters wide that smashed into Earth's crust.
The Ultra Science study presented a simulation of the impact of an asteroid 400 meters in diameter with a circumference of 800 meters in depth.
This will result in a water column 800 meters thick, as well as evaporating the asteroid and a large amount of sediment instantly - with a large fireball appearing hundreds of kilometers away.
The shock waves from the impact would be equivalent to a 6.5 or 7 magnitude earthquake, which would likely trigger underwater landslides around the area, and a train of tsunami waves would form.
The atmospheric blast from the explosion would be greater than anything heard on Earth in recorded history. The energy released will be about a thousand times greater than that from the last eruption of Tonga.
It is also possible that pressure waves in the atmosphere further amplify tsunami waves far from the crater.
The discovery of a mysterious hole in the Atlantic Ocean may solve the mystery of the extinction of the dinosaurs
Perhaps most importantly, could such an event happen in the near future? This is unlikely, but the size of the asteroid we're modeling is very similar to the asteroid Bennu, which is currently in near-Earth orbit.
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