Deepest Part Of The Ocean Is A Still A Noisy Place: Study

Posted: Mar 3 2016, 8:54am CST | by , in Latest Science News


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Deepest Part of the Ocean is a Still a Noisy Place: Study
Hauling up hydrophone during the Challenger Deep mission in 2015. (NOAA)
  • Research shows that Deepest Part of the Ocean is a Pandemonium

Research conducted from Oregon has shown that the deepest part of the ocean is a virtual pandemonium.

Scientists hailing from Oregon found to their surprise that the deep blue ocean is not the proverbial idyllic place of peace and quiet it has been supposedly thought to be.

The deepest region in the ocean is actually a very noisy location. A hydrophone was lowered seven miles beneath the oceanic surface. It was left there close to the ocean floor for a few months.

Among other terrifying sounds that got recorded were the loud cries of whales, the constant noises of engines from ships that passed overhead and even the tremors of earthquakes that occurred in the subterranean depths.

One of the oceanographers spoke of how it was supposed to be one of the quietest of places on earth just like a desert. But reality always trumps theory.

The fact of the matter is that it was one of the most clamorous places on the face of the planet. That many leagues beneath the sea, the noises from natural and man-made objects were simply unbearable.

“You would think that the deepest part of the ocean would be one of the quietest places on Earth,” said Robert Dziak, a NOAA research oceanographer and chief project scientist.

“Yet there is almost constant noise. The ambient sound field is dominated by the sound of earthquakes, both near and far, as well as distinct moans of baleen whales, and the clamor of a category 4 typhoon that just happened to pass overhead.”

The region that was explored was the Challenger Deep. It has only been reached by a couple of vessels. This happens to be the deepest chasm that lies closeby to the region known as Micronesia.

Even a comparison with Mount Everest leaves a mile of water as reserve distance that will be left over from the total depth. The director of the movie Titanic, James Cameron descended in this region in 2012 and stayed there for two hours.

He was inside a special submarine. Some remotely operated vehicles and gizmos as well as gadgets have been employed in the region. These recent observations have been the most extensive so far.

It is indeed a formidable task getting an instrument so many miles beneath the oceanic surface. Furthermore, leaving it in its spot and then recovering it is a hectic thing in itself.

“The pressure at that depth is incredible,” said Haru Matsumoto, an Oregon State ocean engineer who worked with NOAA engineer Chris Meinig to adapt the hydrophone.

“We had to drop the hydrophone mooring down through the water column at no more than five meters per second to be sure the hydrophone, which is made of ceramic, would survive the rapid pressure change.”

However, the hydrophone which was 20 inches in length seemed to be built for its purpose. It was composed of titanium and could stand such extreme pressures that the mind reels at merely imagining them.

While a vehicle would get crushed like a piece of paper in a professional wrestler’s hands, this instrument could withstand such violent pressure as was extant at such depths.

It’s the first time humankind has gone that extra mile or two in depth into the deep blue ocean. As for the sounds captured by the sensors of the instrument at such a depth, they are interesting and will provide valuable material for further research.

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