In the waters of the Western Pacific, a sea of blue surrounded oceanographer Dawn Wright, who was a little blue herself. Her mother died last December and would not be there to watch Wright take on the challenge of reaching the deepest place on Earth.
The reason why? It's not sinking down that's hard, but going back up without being crushed. Only one manned vehicle in the world can do it: Limiting Factor, which is the brainchild of Texas adventurer and explorer Victor Vescovo. He financed the two-person submersible's design and construction.
"If it can work here, it can work anywhere on the seafloor," said Vescovo, who was with Wright on the deep-sea journey. Ocean trenches are largely a watery black hole in terms of research, but they have much to tell us — like Earth's reaction to climate change, and how to better predict earthquakes and tsunamis.
Wright's task was to bring back the first high-resolution mapping of Challenger Deep. Currently, less than a quarter of the global sea floor is mapped"to sufficient detail," she said. Last year, the United Nations pledged to change that and set a goal to have at least 80% of the seabed mapped by 2030.
But one of the best tools to do that is side-scan sonar, and typically the instruments can't survive the harsh environment. After 10 hours beneath the land of sunlight, Wright emerged and returned to the pitching deck of her research vessel where the real work of analyzing her research had only just begun.
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