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Oceans extreme depths measured in precise detail
Scientists say we now have the most precise information yet on the deepest points in each of Earth s five oceans.
The key locations where the seafloor bottoms out in the Pacific, Atlantic, Indian, Arctic and Southern oceans were mapped by the Five Deeps Expedition.
Some of these places, such as the 10,924m-deep (6.8 miles) Mariana Trench in the western Pacific, had already been surveyed a number of times.
But the Five Deeps project removed a number of remaining uncertainties.
For example, in the Indian Ocean, there were two competing claims for the deepest point - a section of the Java Trench just off the coast of Indonesia; and a fracture zone to the southwest of Australia.
Expedition maps hundreds of thousands of miles of previously unexplored seafloor
by The Week team
IBRAHIM CHALHOUB /AFP
An expedition to map the seafloors of the Earth’s five oceans has provided new insights into their precise depths and locations, scientists say.
The Five Deeps Expedition explored the “key locations where the seafloor bottoms out” in the Pacific, Atlantic, Indian, Arctic and Southern Oceans in order to provide “the most precise information yet” on the oceans’ deepest points, reports the BBC.
Top of the ocean bottoms
According to a newly published paper in the Geoscience Data Journal, the Five Deeps Expedition mapped 550,000 sq km (212,356 sq miles) of seafloor, “of which 61% comprised new coverage over areas never before surveyed”.
Following one of the most adventurous ocean expeditions ever, scientists have returned precise measurements for the deepest points in each of the world s five major oceans.
Data from the Five Deeps Expedition (FDE), which performed dives over the course of 10 months from 2018 to 2019, confirms for the first time the locations of the deepest points of Indian Ocean and the Southern Ocean.
The deepest point of the Indian Ocean is at 7,187 metres, within the Java Trench, just off the coast of Indonesia, the data reveals, while the deepest point of the Southern Ocean has a depth of 7,432 metres, within the South Sandwich Trench.
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