What seems like the deepest place in the ocean
#Cosmoread: It turns out the ocean, a noisy, rowdy place seismic temblors, filled with the sound of whale song and ship propeller in ocean- even in the deepest ocean trench.
National Oceanic and Atmospheric Administration (NOAA) researchers an underwater microphone approximately 36,000 feet below the surface of the water (10,972 m) Trench Challenger Deep in the Mariana Trench in the deep sea area is sent in ocean.
“Do you think that the deepest part of the ocean may be one of quiet places on earth,” Robert Dziak, a research oceanographer and chief project scientist with NOAA said in a statement of ocean. “Yet there is almost continuous noise in ocean. Ambient sound field in ocean, both near and far, as well as a category 4 storm and baleen whales specific moans that just passed the top of the tumult, is dominated by the sound of the earthquake.”
Commercial cargo ships, submarines and underwater construction projects have added to the din of noise found beneath the waves in ocean. In fact, the ocean about 10 times noisier than it was 50 years ago today might speak Ocean Conservation Research, an organization that human-caused noise in the oceans of the world, the study said.
National Oceanic and Atmospheric Administration (NOAA) researchers what they really all that the poor man in the deep sea to increase the level of noise in ocean was causing wanted to understand, and that’s so, how noise affects the migration, communication and feeding the dolphins and whales If the pattern-dependent creatures such as sonar. To do this, the scientists they have the deep sea ocean, which shows the level of noise is likely to increase in the coming decades, it could help establish a baseline noise level wanted.
But underwater microphones, or hydrophones, getting about 7 miles (11 kilometers) under the water was no small matter. The pressure at the bottom of the Mariana Trench more than 1,000 times the atmospheric pressure at sea level.
“The depth is incredible pressure,” Haru Matsumoto, an Oregon State University ocean engineer who worked on the project, the statement said. “We believe the pier hydrophone hydrophone, which is made of ceramic, rapid pressure change will survive to be more than 5 meters [16 feet] per second, down through the water column had to drop.”
In July 2015, a team of US Coast Guard ship docked off the coast of Guam from the trough to the bottom of Challenger Deep hydrophone released and anchored the device. They then recorded the ocean noise is 23 days, unless the device was loaded on the flash drive.
Team hydrophone dragged lurking beneath the waves of noise in ocean when they realized there was a constant Thrum. Whale songs, ship propeller, Guam and even the overhead storm ocean crust seismic waves in ocean from the 5.0 magnitude quake sent sound waves reverberating in the deepest part of the ocean.
The team said it would return in 2017 to see how the deep ocean noise has changed plans.