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The source of the hum remains a mystery, to say the least. Researchers suspect that it may be coming from an organism, or perhaps many organisms chanting in unison, but no known marine creature could be matched to the noise. It might be coming from a species yet to be identified, or it might be evidence of a new capability of an already-known creature. Then again, it might be coming from a non-living source too.
There's one clue, however. The sound comes from the ocean's mesopelagic zone, a region between 660 to 3,300 feet below the surface that's too dark for photosynthesis to occur. Since food is scarce there, many of the bizarre organisms that call this region home must migrate up and down the water column en masse on a daily basis to feed. These migrations typically happen at dawn and dusk, which coincides with the weird humming sound.
According to Simone Baumann-Pickering, a marine biologist at the Scripps Institution of Oceanography at the University of California, San Diego, the nature of the sound was "more as if you're sitting on an airplane and it's humming, buzzing." The sound starts after the sun sets, she says, and goes on for a couple of hours, then stops. The same thing happens at dawn.
Now, biologists knew that huge clouds of small fish and crustaceans and squid tend to hide in the dark, deep water during the day, and rise up nearer the surface to feed at night. This happens in all oceans in the mesopelagic zone, a fish-rich area of little light that stretches from about 660 feet beneath the sea's surface to depths of around 3,300 feet.
It took hydrophones in the Pacific to reveal that the hum actually accompanies that daily rise and fall of the fish migration.
Why the noise? Scientists can only speculate. It could be, says Baumann-Pickering, that the creatures "are truly, actively communicating — potentially to initiate migration." In other words, maybe the buzz is just a signal that "it's time to go," she says.
But there's another more mundane possibility.
"It's known that some fish are considered to be farting," says Baumann-Pickering, "that they emit gas as they change depths in the water column." The gas comes from a swim bladder inside the fish that controls its buoyancy.
In either case, billions of fish may be jetting up and down in the ocean every day, and making it hum. If so, it would likely be the largest migration of vertebrate animals on the planet, Baumann-Pickering says. She calculates that the weight of the fish amounts to some 10 billion tons.
Baumann-Pickering and her colleagues have found that there is a distinct sound associated with these daily journeys upwards and downwards. The team used sensitive acoustic instruments to record the low-frequency hum the animals emit as they move up to the surface to feed at dusk, and back down to deeper waters at dawn. They aren’t yet certain which animals in the mesopelagic zone are creating the sound, but small bony fish that are abundant in the zone are the most likely suspects, Baumann-Pickering said.
originally posted by: shockedonlooker
I guess I believe the same gravitational forces that create the ocean tides, create a resonance within the sphere somehow. So many theories!
Acoustic Gravity Waves
On a small scale, acoustic waves are driven by the elasticity of the air itself, and they are not dependent on gravity at all. For example, sound travels just fine through the air inside a manned spacecraft where the air is held in place by the pressure in the hull. On a large scale, however, the planet's atmosphere is held in place by gravity exactly as the ocean is, and much like the ocean, the atmosphere has waves sloshing around on it. Unlike the ocean, of course, there is no distinct surface to the atmosphere, which just becomes thinner and thinner with altitude. However, the basic principle is the same: gravity pulls high, dense regions of atmosphere back down where they belong, forcing neighboring regions up and thus sending out ripples of air.
The Importance of Acoustic Gravity Waves
While these waves are acoustic, they occur at frequencies many times lower than humans can detect as sound, and are more easily measured by a barometer than by a microphone. Yet they do produce visible effects, as in the patterns of clouds. Understanding how they behave is useful for explaining and predicting weather and climate phenomena. Scientists have also studied ways of using acoustic gravity waves as a means to detect and monitor nuclear detonations.
Earth sounds analysis by
Dr. Elchin Khalilov, a geophysicist and a professor in Azerbaijan.
“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?
“There is one more possible cause of these sounds and it may lie at the Earth’s core. The fact is that the acceleration of the drift of the Earth’s north magnetic pole which increased more than fivefold between 1998 and 2003 and is at the same level today points to intensification of energy processes in the Earth’s core, since it is processes in the inner and outer core that form the Earth’s geomagnetic field. Meanwhile, as we have already reported, on November 15, 2011 all ATROPATENA geophysical stations which record three-dimensional variations of the Earth’s gravitational field almost simultaneously registered a powerful gravitational impulse. The stations are deployed in Istanbul, Kiev, Baku, Islamabad and Yogyakarta, with the first and last one being separated by a distance of about 10,000 km. Such a phenomenon is only possible if the source of this emanation is at the Earth’s core level. That huge energy release from the Earth’s core at the end of the last year was some kind of a start signal indicating the transition of the Earth’s internal energy into a new active phase.
“Intensification of the energy processes in the Earth’s core can modulate the geomagnetic field which, through a chain of physical processes at the ionosphere – atmosphere boundary level, generates acoustic-gravity waves the audible range of which has been heard by people in the form of a frightening low-frequency sound in different parts of our planet.
“In both cases, even though the causes of acoustic-gravity waves are of a quite understandable geophysical nature, they are indicative of the expected significant increase in solar activity and the geodynamic activity of our planet. There is no doubt that processes in the core rule the internal energy of our planet, therefore, we should expect by the end of 2012 a sharp rise in strong earthquakes, volcanic eruptions, tsunamis and extreme weather events with peak levels in 2013 – 2014.”
originally posted by: Rezlooper
As above, so below
Strange hums from above, strange hums from below
I still believe these hums and most booms are resonating from acoustic gravity waves caused by the increase in earthquake and volcanic activity in recent years. Look up acoustic gravity waves and professor elenin.
Here's a couple of links
www.sciencedirect.com...
www.gizmag.com...
www.ncbi.nlm.nih.gov...
www.ehow.com...
Acoustic Gravity Waves
On a small scale, acoustic waves are driven by the elasticity of the air itself, and they are not dependent on gravity at all. For example, sound travels just fine through the air inside a manned spacecraft where the air is held in place by the pressure in the hull. On a large scale, however, the planet's atmosphere is held in place by gravity exactly as the ocean is, and much like the ocean, the atmosphere has waves sloshing around on it. Unlike the ocean, of course, there is no distinct surface to the atmosphere, which just becomes thinner and thinner with altitude. However, the basic principle is the same: gravity pulls high, dense regions of atmosphere back down where they belong, forcing neighboring regions up and thus sending out ripples of air.
The Importance of Acoustic Gravity Waves
While these waves are acoustic, they occur at frequencies many times lower than humans can detect as sound, and are more easily measured by a barometer than by a microphone. Yet they do produce visible effects, as in the patterns of clouds. Understanding how they behave is useful for explaining and predicting weather and climate phenomena. Scientists have also studied ways of using acoustic gravity waves as a means to detect and monitor nuclear detonations.
And then there's this article from Professor Elchin Khalilov.
www.envisioningconsciousness.com...
Earth sounds analysis by
Earth sounds analysis by
Dr. Elchin Khalilov, a geophysicist and a professor in Azerbaijan.
“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?
“There is one more possible cause of these sounds and it may lie at the Earth’s core. The fact is that the acceleration of the drift of the Earth’s north magnetic pole which increased more than fivefold between 1998 and 2003 and is at the same level today points to intensification of energy processes in the Earth’s core, since it is processes in the inner and outer core that form the Earth’s geomagnetic field. Meanwhile, as we have already reported, on November 15, 2011 all ATROPATENA geophysical stations which record three-dimensional variations of the Earth’s gravitational field almost simultaneously registered a powerful gravitational impulse. The stations are deployed in Istanbul, Kiev, Baku, Islamabad and Yogyakarta, with the first and last one being separated by a distance of about 10,000 km. Such a phenomenon is only possible if the source of this emanation is at the Earth’s core level. That huge energy release from the Earth’s core at the end of the last year was some kind of a start signal indicating the transition of the Earth’s internal energy into a new active phase.
“Intensification of the energy processes in the Earth’s core can modulate the geomagnetic field which, through a chain of physical processes at the ionosphere – atmosphere boundary level, generates acoustic-gravity waves the audible range of which has been heard by people in the form of a frightening low-frequency sound in different parts of our planet.
“In both cases, even though the causes of acoustic-gravity waves are of a quite understandable geophysical nature, they are indicative of the expected significant increase in solar activity and the geodynamic activity of our planet. There is no doubt that processes in the core rule the internal energy of our planet, therefore, we should expect by the end of 2012 a sharp rise in strong earthquakes, volcanic eruptions, tsunamis and extreme weather events with peak levels in 2013 – 2014.”
But, from the observations, I think its safe to say that these activities are still increasing and haven't peaked just yet.