Mystery of Earth's humming noise could now be solved
J Thoendell stashed this in Science
Scientists have confirmed the cause of a strange humming noisethat emanates from the Earth and has baffled people for more than forty years – and was even a factor in one reported suicide.
The noise has been talked about worldwide and also made local newspaper headlines in the UK. It is often referred to as a “phenomenon” and “the hum”.
However, the search for the truth could now be over as researchers claim that microseismic activity from long ocean waves impacting the sea bed is what makes our planet vibrate and produces the droning sound.
The pressure of the waves on the seafloor generates seismic waves that cause the Earth to oscillate, said Fabrice Ardhuin, a senior research scientist at Centre National de la Recherche Scientifique in France.
The continuous waves produce sounds lasting from 13 to 300 seconds. They can be heard by a relatively small proportion of people – who are sensitive to the hums – and also by seismic instruments.