They are called "hum", those singular, low-frequency, lingering and overwhelming sounds that sound like a siren or buzz reminiscent of a powerful diesel engine idling and at regular intervals in the distance.
These still unexplained phenomena were mentioned as early as the 19th century, but they have been increasingly popular since the end of the 1970s. They have been heard overwhelmingly in several localities around the world:
1979: Bristol Hum (Bristol, England)
Since the early 1990s: Taos Hum (New Mexico, United States)
1999: Kokomo Hum (Indiana, United States)
2006: Auckland North Shore Hum (Auckland, New Zealand)
2009: Bondi Buzz (Australia)
January 2012: Belgium; New York (United States); Swiss ; Canada; Costa Rica
December 2012: Concklin, Alberta, Canada
January 2016: Morocco
Nearly 9 testimonies were put online in the cartographic database of the World Hum Map project, without however knowing what is really hum or hearing / psychiatric problems.
sen-no-sen wrote:Another case of strange aerological phenomena, filmed here 30 minutes before the Sichuan earthquake in China (2008)
Christophe wrote:sen-no-sen wrote:Another case of strange aerological phenomena, filmed here 30 minutes before the Sichuan earthquake in China (2008)
These "rainbow" clouds are not that rare, I see them several times a year (like all pilots, I look at the sky more in general) even if the ones I see are not as intense as those of the video ...
I think there is absolutely no physical connection * to the earthquake ...
ps: in flight I have already seen an inverted rainbow (downward arc ...), this is nothing exceptional all pilots know this ...
* metaphysics can be lol
Christophe wrote:Sources please ???
I do not think that tectonic friction phenomena can generate this kind of electromagnetic phenomena ... or must you explain to me how ??? But on the other hand the magma can it! Since there are plasma phenomena inside!
Strange lights during earthquakes
Canadian and American researchers have identified the specific conditions in which atmospheric light can be produced by earthquakes.
Long regarded as legends or visual hallucinations, the light manifestations which accompany certain earthquakes are very credible phenomena, explain Canadian and American geologists in Seismological Research Letters. Researchers have identified the 65 most serious testimonies of these rare phenomena and have noticed that they most often occur above vertical faults, in the open continent, far from subduction faults where one tectonic plate slides under another .
Luminous bands and columns emerging from the ground
Lights can be emitted before, during and after earthquakes, and they take quite varied forms. "We identify 4 main families of seismic luminosities », says Robert Thériault, geologist at the Quebec Ministry of Natural Resources and first author of the study. "The first are luminous spheres, which are either static or moving in the sky, the second brings together atmospheric luminosities, rapid and brief flashes, and also illuminations visible over several kilometers. The third form looks like some kind of flames coming out of the ground, but they are not combustions because they do not emit heat. EFinally, lastly, there are also bands or luminous columns which emerge from the ground. "
The origin of all these seismic luminosities is still far from being identified, but the most serious hypothesis seems to be of electrical origin. The brutal release of electric charges caused by crystalline rock slides rise to the surface and ionize the ambient air, a little like a fluorescent lamp. «This type of phenomenon was imagined and verified in the laboratory, on a reduced scale, by one of the co-authors of the study, Friedemann Freund, of the Ames center at Nasa in California, ”specifies Robert Thériault.
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