Scientists have managed to find the most probable explanation for the Mariana Trench Sound Mystery as the strange recordings have generated many theories.
The Marianas Trench is the as yet deepest part discovered in the Earth’s oceans. Found in the Western Pacific Ocean, it is about 1,580 miles long.
Its maximum with was recorded to be 36,070 feet deep. The area was the subject of many studies. However, there is still much left to be known about the area.
In recent years, another mystery was added to the list. Scientists registered strange sounds, generated in the Trenches.
The Mariana Trench sound mystery generated quite a lot of theories. However, scientists are confident that they have found an explanation.
Research was carried out by Oregon State University Researchers. Its results were published in The Journal of the Acoustical Society of America.
It was titled as follows. “A complex baleen whale call recorded in the Mariana Trench Marine National Monument”.
They also gave a name to the mysterious sounds. It was titled the “Western Pacific Biotwang”. The Mariana Trench sound mystery began in 2014.
As they were first registered in 2014, multiple occurrences were also reported in 2015. As stated in the study name, they were recorded in a specific area. This is the Marianas Trench Marine National Monument region.
It is a 94,981 square miles area, east of Guam. It also one of the largest global marine areas to be protected by law.
The sounds registered were reported to being unique in the scientific world. However, Sharon Nieukirk and her team found a similar sound.
Western Pacific Biotwang noises were picked up by autonomous vehicles. It is a low-frequency sound, that spans across frequencies. It can be as low as 38 hertz. It can come as high as 8,000 hertz.
In comparison, the human hearing range registers sounds in between 20 to 20,000 hertz. The Mariana Trench sound mystery was determined to have an animal origin.
A geological or human origin has been taken out of the question. Some believed it to be an audio trace of earthquakes.
However, the team’s reports contradict such theories. According to them, the sounds are not similar to any known anthropogenic sources. These are noises produced by seismic airguns or by ships.
Instead, the Biotwang was assimilated to the Minke Whale Star Wars Call. This is an equally bizarre sound. It was recorded in the Great Barrier Reef, in Australia.
Researchers compared the two sounds. Structure and frequency were amongst the compared factors. The similarities between the two led scientists to the following conclusion.
They believe the sound to have been produced by the same animal type. Such an animal being a minke whale or a subtype. Researchers stated that the frequency sweeps of the two are very similar.
The final part of the call is very similar to dwarf minke whale Star Wars calls. As is its complex sound structure.
Dwarf minke whales are a Balaenoptera acutorostrata subtype. More commonly known as minke whales, they are also a baleen whales class member.
Minke whales are quite known for the strange sounds they release. They have also been recorded to produce “boings”.
As such, their sound repertoire could feature a new addition. However, a problem still stands. The sound mystery has not been fully explained.
Baleen whales usually make such sounds during mating periods. Such periods are mostly in the winter. However, the Western Pacific Biotwang was captured year-round.
Nieukirk pointed out the need for a new study. This would determine the sound’s frequency. More exactly, it would compare summer to winter occurrences.
As such, the team of researchers is hoping for a new expedition. They are hoping to find the exact source of the Mariana Trench sound mystery. They wish to identify the specific animal making. Just as importantly, they will seek to determine why it is making it.
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