STATES CHRONICLE – A mysterious phenomenon kept scientists baffled for many decades, and they still haven’t managed to find out an explanation for it. This phenomenon is the hum of Earth, a creepy sound which appears to come from the center of our planet. While still remaining a mystery, scientists have at least managed to record it on the bottom of the ocean.
The hum cannot be picked up by a human ear
Earth keeps producing this weird hum, which remains inaudible to the human ear. This made it extremely difficult for people to prove its existence. Scientists first theorized it in 1959, but they found enough evidence to prove it only in 1998. Since then, they recorded it in various ways, but not underwater.
Knowing where the hum comes from and why it occurs might be the secret to finding out many of the mysteries of this planet. However, recording it on the ocean floor for the first time is still a big enough achievement. This was performed by a team of geophysicists, who developed a study published in the journal Geophysical Research Letters.
Researchers still don’t know where the hum comes from
To achieve this goal, they used the help of a series of seismometers installed on the bottom of the Indian Ocean. Also, since about 70 percent of our planet is covered in water, it means that scientists can now study the hum in a new environment, getting closer to unlocking its mystery.
In fact, what these geophysicists did was an extremely difficult task. The ocean is constantly moving, so installing the equipment and recording the sounds on its bottom was a little tricky. After picking up all the observations made by a series of seismometers, they had to filter the hum from all the other sounds made by the ocean and the Earth’s crust.
There have been a series of theories regarding the origin of the hum. Some say the ocean makes Earth buzz, while others say it comes from the atmosphere. Even so, we now might be one step closer to the long-desired explanation.
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