We now have a new measurement of the deepest point in the ocean—thanks to a deep-sea instrument imploding
, David Barclay heard the sound through headphones plugged into an underwater microphone on the ship's hull. His mind flashed to the pair of scientific instruments sinking through the water beneath his feet, en route to an abyss in the Pacific Ocean known as Challenger Deep. The spot lies nearly seven miles below the waves—more than a mile deeper than Mount Everest is tall—making it the ocean's deepest point.
work to create a compact and less expensive way to record the underwater soundscape, a project he began as a graduate student at Scripps Institution of Oceanography. Studying the thrum of the sea could not only help scientists understand the ocean’s structure but also aid in picking out particular melodies, whether from whales or submarines.
The HMS Challenger carried many scientific instruments on board, some of which are shown here. From left to right is a slip water bottle for determining salinity, a cup sounding lead to collect ocean bottom samples, a dredge to collect samples of sea life, a thermometer for measuring deep-sea temperatures, and sounding machines to determine water depth.Please be respectful of copyright. Unauthorized use is prohibited.
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