In a study that covered more than 75,5 kilometers, scientists have succeeded accurately measure the deepest points of each of the Earth's five oceans. There were 39 dives over ten months, between 2018 and 2019, to create maps most accurate of the waters that cover most of the globe. And from this work, a confirmation emerged: the Fossa das Marianas is the deepest of all.
The Five Deeps Expedition (FDE), in Portuguese, was led by Dr. Alan Jamieson, from the University of Newcastle, England. For the dives, the group used the Limiting Factor (LV, limiting factor, in Portuguese), a submersible capable of carrying two people. About 61% of the sites visited by the FDE had never been mapped with modern technology.
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Inside the submersible was a state-of-the-art full-depth multi-beam echo-probe. The equipment emitted a series of sound pulses to map each part of the seabed. Former US intelligence officer Victor Vescovo was the one who launched the LV on missions.
He became the fourth person in history to reach the Depression Challenger, the lowest point on the Earth's surface, in May 2019. In the Mariana Trench, Vescovo found three new species of marine life, recovered the deepest piece of rock in the mantle of Terra and found a plastic bag and a packet of candy. Examples of the distance that pollution has reached.
Deepest points in the oceans
The Challenger Depression continues as the deepest place in the oceans, with 10.924 meters of depth. In the ocean Pacifico, the second deepest place is the Depression Horizon, in the Fossa de Tonga, at 10.816 meters of depth. It is also the second largest in the world.
The ocean Atlantic has its lowest point in the Puerto Rico Fossa. The Brownson Depression is 8.378 meters deep. The Arctic Ocean has the smallest of the deepest points among the five oceans analyzed. There, the Molloy Depression measures 5.551 depth.
The data collected by the scientists also pointed out for the first time the deepest points of the Indian Ocean and the Southern Ocean (or Antarctic Glacier). The latter is nothing more than a southern extension of the Atlantic, Pacific and Indian oceans.
In the Indian Ocean, the lowest point is 7.187 meters and still has no name, but it is located in the Java Pit, close to the coast of Indonesia. Before, it was speculated that the deepest place was the Fracture Zone of Diamantina, but this area narrowly loses, with 7.019 meters of depth.
The Factorian Depression is located in the Southern Ocean, with 7.432 meters, at the southern tip of the Fossa of the South Sandwich Islands. There is still interesting information about this calculation. The deepest point of the Southern Sandwich Islands Trench is the Meteor Depression, with 8.265 meters, but that part is still in the Atlantic Ocean.
The researchers published the study in Geoscience Data Journal, led by Cassandra Bongiovanni, chief hydrographic researcher at FDE. "The expedition gave us a unique opportunity to accurately map some of the most remote and deepest places in the world and to validate these depths with measurements collected by submersibles and support dives," she told Daily Mail.
Street: Daily Mail
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