by Cynthia McKanzie
Image credit: CNN
The mysterious humming sound has been reported to trouble people
The source of the
disturbing hum has triggered the curiosity of the scientific
community, and researchers say they can explain the origin of this
unpleasant and frightening sound.
In May and June, 2018, a series of seismic signals were detected by
earthquake monitoring agencies all over the world. Some of the
signals lasted up to 20 minutes, and they created a weird humming
These unusual signals promoted scientists to research what was
responsible for the sound.
According to a recent
of a Deep Magma Reservoir near Mayotte inferred from Seismicity and
Deformation), published in Nature Geoscience these
signals were a result of the formation of a new underwater volcano.
"We identify about
7,000 volcano-tectonic earthquakes and 407 very-long-period
Early earthquakes migrated upward in response to a magmatic dyke
propagating from Moho depth to the surface, whereas later events
marked the progressive failure of the roof of a magma reservoir,
triggering its resonance," the researchers write in their paper.
earthquakes were traced to
Mayotte, an island in the Indian
The island is and to
about 270,000 people, it's the oldest volcanic island in the
Comoros Basin grouping between
Mozambique and Madagascar.
The volcano erupted last
time about 4,000 years ago.
Researchers couldn't see any signs of volcanic activity in this
area, but they suspected that magmatic processes may be forming one.
Scientists noticed a lowering of the island's surface by seven
inches, indicating activity linked to the earthquakes.
According to CNN,
campaign in May 2019 showed that a volcano had formed in the
During the formation of
the underwater volcano, earthquake activity dropped, and the ground
of Mayotte lowered.
Then, the VLP signals (very-long-period
seismic signals) began.
The new volcano
the island of Mayotte
in the Indian Ocean.
Daily Star Post
"We interpret this as
a sign of the collapse of the deep magma chamber off the coast
of Mayotte," said Eleonora Rivalta, study co-author from the
German Research Center for Geosciences GFZ.
"It is the deepest
and largest magma reservoir in the upper mantle to date, which
is beginning to empty abruptly."
"Since the seabed lies 3 kilometers below the water surface,
almost nobody noticed the enormous eruption," said Torsten Dahm,
study co-author and professor of geophysics and seismology at
the University of Potsdam in Germany.
"However, there are
still possible hazards for the island of Mayotte today, as the
Earth's crust above the deep reservoir could continue to
collapse, triggering stronger earthquakes."
According to Oregon State
University, there are over a million underwater volcanoes and only
about 75,000 rise over half a mile above the ocean floor.
It's understandable if
some of these underwater volcanoes are responsible for
the humming sound that has troubled
many, and mysterious unexplained sounds coming from the ocean have
been reported previously on many occasions.