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from the we-thought-it-was-only-us-hearing-strange-noises dept.
According to Wired.co.uk, the source of the Earth's 'humming' noise may have been found:
A strange bell-like ring emitted by the Earth has left oceanographers confused for decades, but a new study may have found an explanation.
The low-frequency sound, which is inaudible to human ears but can be detected by seismic instruments, has frustrated scientists since the 90s. Theories suggested everything from electromagnetic radiation to earthquakes and secret military operations might be to blame. Although the sound is almost certainly too faint for humans to hear, some people claim to be plagued by a "tinnitus"-like noise -- including many residents of Bristol in the 70s, who said the sound caused headaches and even nosebleeds.
Link to research paper.[abstract only]
(Score: 2) by Reziac on Tuesday April 21 2015, @04:00PM
How is this different from when bats blunder into other sources of pressure differential, like, frex, the wind generated at the mouths of caves??
And there is no Alkibiades to come back and save us from ourselves.
(Score: 0) by Anonymous Coward on Tuesday April 21 2015, @06:07PM
No idea, perhaps pressure differences isn't as strong at caves that bats like.
I found it strange and interesting anyway :).
See also: http://news.bbc.co.uk/2/hi/health/3614180.stm [bbc.co.uk]
(Score: 0) by Anonymous Coward on Tuesday April 21 2015, @09:38PM
Bats have sonar. They are aware of other stuff in the air.
Even for flying critters that don't have sonar, wind power is way, Way, WAY down on the list of dangerous stuff.
Chart 1 [wikipedia.org]
Chart 2 [googleusercontent.com] (orig) [thinkprogress.org]
-- gewg_