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We have analyzed records of these sounds and found that most of their spectrum lies within the infrasound range, i.e. is not audible to humans. What people hear is only a small fraction of the actual power of these sounds. They are low-frequency acoustic emissions in the range between 20 and 100 Hz modulated by ultra-low infrasonic waves from 0.1 to 15 Hz. In geophysics, they are called acoustic-gravity waves; they are formed in the upper atmosphere, at the atmosphere-ionosphere boundary in particular. There can be quite a lot of causes why those waves are generated: earthquakes, volcanic eruptions, hurricanes, storms, tsunamis, etc. However, the scale of the observed humming sound in terms of both the area covered and its power far exceeds those that can be generated by the above-mentioned phenomena.
In that case, what could be causing this humming in the sky?
In our opinion, the source of such powerful and immense manifestation of acoustic-gravity waves must be very large-scale energy processes. These processes include powerful solar flares and huge energy flows generated by them, rushing towards Earth's surface and destabilizing the magnetosphere, ionosphere and upper atmosphere. Thus, the effects of powerful solar flares: the impact of shock waves in the solar wind, streams of corpuscles and bursts of electromagnetic radiation are the main causes of generation of acoustic-gravitation waves following increased solar activity.
Given the surge in solar activity as manifested itself in the higher number and energy of solar flares since mid-2011, we can assume that there is a high probability of impact of the substantial increase in solar activity on the generation of the unusual humming coming from the sky.
It should be pointed out that solar activity began to rise sharply since early 2011, with its amplitude significantly higher than all forecasts given by a number of influential scientific institutions in 2010 and 2011. Meanwhile, the observed increase in solar activity is fully consistent with the forecast of the International Committee GEOCHANGE published in the Committee's Report in June 2010. If this growth rate of solar activity continues, its amplitude by the end of 2012 will be higher than the amplitude of 23rd solar cycle, and in 2013-2014 the solar activity will reach its peak the amplitude of which was predicted by us to be 1.5 - 1.7 times higher than the amplitude of the 23rd cycle.
But you said that the cause of the "sky hum" can lie within Earth's core as well, what does it mean?
Mysterious sounds have been heard booming from the sky all around the world – in some cases they were so loud they set off car alarms.
The unsettling noises were heard recently from Europe to Canada, sounding like groans and powerful horns.
In Germany noises coming from the sky were recorded on a video camera and uploaded to YouTube, with car alarms clearly heard going off in the background.
Geoscientist David Deming from the University of Oklahoma, meanwhile, has previously written about a phenomenon called The Hum – ‘a mysterious and untraceable sound that is heard in certain locations around the world by two to ten per cent of the population’.
Writing in the Journal of Scientific Exploration, he said that sources of The Hum could include telephone transmissions and ‘aircraft operated by the U.S Navy for the purpose of submarine communications’.
According to Nasa, the Earth has ‘natural radio emissions’.
The Agency said: ‘If humans had radio antennas instead of ears, we would hear a remarkable symphony of strange noises coming from our own planet. Scientists call them "tweeks," "whistlers" and "sferics."
'They sound like background music from a flamboyant science fiction film, but this is not science fiction. Earth's natural radio emissions are real and, although we're mostly unaware of them, they are around us all the time.’
For instance lightning can produce eerie-sounding radio emissions, Nasa added.
Originally posted by Nyiah
I just woke up, so correct me if I'm wrong, but in a nutshell they're saying it's electromagnetic/geologic interference translating to human ears as noise, right? That makes much more sense than some pseudoscience doomsday BS. We're still babies in earth sciences, and we, compared to other animals on the planet, don't hear very well, our range is pretty limited. I wonder what effect the interference noise has on the light spectrum we also can't see, if any effect?
I've also wondered if there's a type of Coriolis effect that applies to the phenomenon. I mean, there's got to be a better reason why it's so prevalent in some latitudes more than others. If this is geophysical in origin, then surely there much be a rotational effect aspect that keeps it from being nearly so well heard elsewhere.
If course, seeing these plotted out in the US on the charting map, I'm wondering if it's that big ol' hunk of the subducted plate under the US making noise way down there while it melts away, too. How far down would it be under the mid-eastern US, anyway? I've seen the models that say it's still a big chunk, and wonder if it is would that play a major role in noise. Like Taos, Taos is a thinner area of crust, and therefore, if the noise is from the melting, twisting, off-gassing, etc from a degrading old plate, then of course it makes sense that the noise would translate better through a thinner area of the crust like in Taos.
I haven't yet had coffee. I hope that all made sense. *yawns and stumbles blearily towards kitchen*edit on 4/2/2013 by Nyiah because: (no reason given)
Originally posted by winofiend
As a whole range of alleged sounds are said to be the one thing according to the various people who've heard something 'first hand' I have my doubts that there is a phenomenon to start with other than a viral youtube hoax gone bad.
A few nights ago I heard the sounds in North Carolina in the mountains. I at first thought is was thunder. We don't really ever get thunder much up here. But it kept sounding like a jet, which we also don't get many jet sounds either, the only aircraft fly way over, and you can't even hear em usually.
The sound came in and went out like you described I would hear it for maybe 3 minutes at a time.(30 minutes total I would say) I started imagining it was a drone circling the house haha. I was half asleep watching some youtube video at 2am or so.
but the sound stayed and kept almost going into that weird metal sound that I thought was faked. Kind of a sound you would hear in a movie when something HUGE was happening...
I didn't post this before now because I actually had the idea to record the sound, but I have no sound recording devices and no cell phone either actually. I didn't want to sound like a liar.
I can't begin to guess what this sound was or is. It sounded umm supernatural. Like a sound you would hear while meditating... Or crossing through dimensions... or something weird like that...
Originally posted by Dustytoad
Originally posted by andboycott
reply to post by Dustytoad
interesting. im still listening but, let's be extra vigilant tomorrow night. maybe we'll have a scoop
thats what it sounds like too..not jets or machinery totally but vibrations, inner soundsedit on 16-3-2012 by andboycott because: (no reason given)
I completely agree with this characterization of the sound, and I wish I had said it myself.
I felt like I was slightly vibrating or going slightly trance-y as I listened to it.