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Scientists hear sound in the Mariana Trench


Chinese researchers are working on understanding how sound is transmitted in the deepest parts of the oceans. At deep levels, sound is vital for communication because the light isn't available. The team from Northwestern Polytechnical University in Shanxi province dropped an acoustic probe into a section of the Mariana Trench - some 11km (6.83 miles) underwater.

They were able to receive sounds from the surrounding ocean and believe that the experiment could help them to understand how deep-sea creatures communicate with each other. It could also have military applications for submarines and other naval equipment.

According to Engadget , the team have dropped six acoustic sensors into the trench to measure ambient noise down there over the course of the year. The site of the sensors is called the Challenger Deep and is the deepest recorded point on the bottom of the ocean.

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