Mysterious and unexplained sounds Pacific

September 18, 2012 15:18

Mysterious and unexplained sounds Pacific

Office of NOAA — National Oceanic and Atmospheric Administration — have lots of sounds in the depths of the Pacific, the origin of which is not explained. Scientists have recorded, and then explore the ocean noise, for more than twenty years. They have a sound recording of seismic activity, the noise of moving ice packs, the sounds of marine animals. Yet the origin of some of the sounds is still a mystery. There are several different theories that include marine life, the instability of ice cover, and even UFOs.

Roar

This sound specialists NOAA detected in 1997, it was very powerful and was issued at ultralow frequencies. He was recorded in a very remote part of the Pacific Ocean, which is located in the south-west of South America. Sound character lets say that the sound may have to issue an animal, but none of the species known to science can not make such sounds. Volume "Reva" far exceeds any known animal noises. "Roar" simultaneously registered several hydrophones, which were separated from each other by about five thousand kilometers. This makes it the most distant ever fixed-ocean sounds.

Julia

This sound is recorded March 1, 1999. Its length was about fifteen seconds. This noise came from the equatorial Pacific, presumably, its source was somewhere between South America and Easter Island. At the sound "Julia" was also high volume, which allowed him to fix, distant five thousand kilometers, a hydrophone.

Slowdown

He was registered May 19, 1997, the sound lasted about seven minutes. He was named slowing because of his height declined steadily for seven minutes. Beginning in 1997, this noise is repeated annually. A source location is estimated that there were just north of Easter Island, near the Pacific equator. Scientists have proposed a hypothesis about the origin of the sound "Slow," but it has not yet been confirmed. This sound is similar to the motion of ice packs in Antarctica, but the intended location of the source rejects the presence of ice in the area at any time of the year, so the question remains open.

Train

This sound appeared in the equatorial region of the Pacific Ocean, just south of Easter Island. Its sound is present regular volume and lift heights up to a certain limit, which is similar to a train horn.

Rise

NOAA experts have recorded it in August 1991. It consists of a large number of repetitive sound waves with a rapid rise in frequency. After the initial discovery, the sound was repeated annually, but the volume and frequency of each time decreased. It is very likely that this seasonal pattern, so the highest frequency sound recorded in the fall and spring. Sound source is located to the north of Antarctica, about midway between South America and New Zealand. According to scientists, the seismic nature of the sound associated with the volcanic activity in the area.

Whistle

This sound is recorded July 7, 1997, and recorded his only one hydrophone sensor. This is rather unusual because all the other aforementioned sounds caught by at least four different sensors simultaneously. The source of the sound was in the equatorial Pacific Ocean, about five hundred miles from Mexico City. Sound like a whistle, and the duration of about a minute. This sound is fixed every year, after the first detection.

All of these mysterious sounds are born in the depths of the Pacific. One can argue that the same results in their appearance, seismic activity, animals, and can be a UFO? The good news is that the answer to this question will be in the near future, as currently being developed at NOAA tech hydrophone sensors, the sensitivity of which is hundreds of times higher than those currently used.

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