Ear-pleasing new report confirms volcanic source of mysterious global hum

Posted: January 11, 2020 by oldbrew in Geology, volcanos
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Credit: metro.co.uk


The idea is that “Every time the rock sags into the chamber, it creates a resonance and this produces this strange signal that you see far away.” Is this really ‘The Hum’?

Can you hear it? That elemental thrumming emerging just beneath the engulfing din of everyday city and suburban life? 

Well, chances are you’re not losing your mind or developing some extra-human ability akin to comic book superheroes, says SyfyWire.

Better odds are that it’s Mother Earth’s growing pains in the form of loud volcanic stirrings, as revealed in a new study published in the journal Nature Geoscience.

First reported back in the ’70s, these unexplained low-frequency rumbles were heard around the world, and though myriad theories were presented, there was no specific cause ever found, other than possible sound sources like area cooling towers, transformer substations, industrial air compressors, and even secret submarine tracking stations (as portrayed in a 1998 The X-Files episode titled Drive).

Now a German scientific team has apparently solved the mystery of a strange seismic humming experienced around the globe since it was first detected in late 2018. And despite many believing it was some alien doomsday device warming up to unleash its planet-killing spores, it appears to be caused by a massive underwater volcano forming just off the coast of Madagascar.

Beginning in the spring of 2018, a wave of intense earthquakes was recorded off the coast of the minuscule island of Mayotte, a French territory midway between Madagascar and Mozambique.

This anomaly led study co-author Simone Cesca, a German seismologist of the GFZ German Research Center for Geosciences, to conclude with his colleagues that they were caused by an enormous pocket of molten magma slowly draining up to meet the sea floor of the Indian Ocean.

According to their latest research paper, it’s the largest magma chamber ever discovered, and measures in at a whopping 16 to 19 miles deep.

Full report here.

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