Mayotte Volcano set to erupt AFTER 5,000 YEARS?

[Brian4Liberty]

[Brian4Liberty]

Earthquake swarm near Mayotte, oldest volcanic island in the Comoros basin
May 15, 2018

A rare earthquake swarm started near the small Indian Ocean island of Mayotte on May 10, 2018 and continues to date. Mayotte is the oldest volcanic island in the Comoros Basin grouping and quakes likely are the result of a seismic hot spot as well as the island’s position along the East African Rift.

According to the BRGM, the France-based geological agency serving the territory, the swarm started at 05:14 UTC on May 10 and increased around 12:00 UTC with magnitudes close to 3.0. Magnitudes increased to 3.5 and 3.7 by 16:40 UTC on the same day.

The first quake felt by the population hit at 23:19 UTC, May 10 and had a magnitude of 4.5, according to the BRGM.

The strongest earthquake in this sequence so far was M5.1 (USGS, EMSC) registered at 14:41 UTC on May 14.
...
More: https://watchers.news/2018/05/15/ear...comoros-basin/

[angelatc]

Global warming, obviously

[CaptUSA]

Global warming, obviously

Need to sacrifice some virgins.





(obviously, don't want to sacrifice the sluts!!)

[Zippyjuan]

https://watchers.news/2018/05/15/ear...comoros-basin/

"Earthquakes in this swarm are of the same order of magnitude as those of 1981 and December 1985," BRGM said. "They are are part of a known and moderate seismicity in the Mozambique Channel,

No eruptions back then.

[TheTexan]

Global warming, obviously

Correct. The rising sea level puts more pressure on the ocean floor and causes increased volcanism during periods of glacial melting.

Astute observation.

[Henry Rogue]

Blup Blup Island...

[Occam's Banana]

Mayotte Volcano set to erupt AFTER 5,000 YEARS?

Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn! Iä! Iä! Cthulhu fhtagn!

[Swordsmyth]

https://watchers.news/2018/05/15/ear...comoros-basin/



No eruptions back then.

If we are lucky we won't have one now but there wasn't as much seismic and volcanic activity happening back then either.

[Brian4Liberty]

The guy that made the OP video is quite excitable and alarmist. Guess we'll see if this prediction actually occurs...

[Brian4Liberty]

[Swordsmyth]

Just before 9.30am on Sunday 11 November, a series of unusual seismic pulses rippled around the world almost undetected.

The waves rang for over 20 minutes, emanating about 15 miles off the shores of Mayotte - a tiny island in the Indian Ocean between Madagascar and Africa.

From here, they reverberated across Africa, setting off geological sensors in Zambia, Kenya, and Ethiopia.


They crossed the Atlantic, and were picked up in Chile, New Zealand, Canada, and even Hawaii nearly 11,000 miles away, the National Geographic reports.

Despite their huge range, the waves were apparently not felt by anybody. However, one person monitoring the US Geological Survey’s live stream of seismogram displays did notice the unusual waveform and posted it to Twitter, sparking the interest of other geologists and earthquake enthusiasts.
Twitter user @matarikipax posted the waveforms, describing it in the first instance as “a most odd and unusual seismic signal”.


It was not only the power of the seismic waves which puzzled scientists when they began to examine the readings, but also the curiously regular shape of the waveform.
In a typical earthquake, the rapid crash of a tectonic plate movement sends out what is known as a “wave train”, composed of several types of waves moving at different speeds from the epicentre of the quake.
Seismographs measure the fastest waves first (the primary or P waves), which arrive in an abrupt cluster, then the secondary (S waves), and finally, rumbling along later, come slower low-frequency surface waves. In a powerful quake, these can move across the surface of the planet several times.
The wave pattern seen on 11 November resembled these slow-moving waveforms usually seen following large earthquakes - only, in this case, there had not been a perceptible earthquake.


The bizarre waveform is what scientists call “monochromatic”. Earthquakes normally produce waves of so many different frequencies, the wave readings appear more jumbled.


But the mystery waveform from Mayotte was a crisp zigzag, which repeated after steady 17-second intervals.
“They're too nice. They're too perfect to be nature,” joked the University of Glasgow’s Helen Robinson, who is study for a PhD in applied volcanology.

Speaking to the National Geographic, she added the location of the island means industrial sources for the unusual wave - such as oil drilling or from wind farms - could be ruled out.

Founder of UK Earthquake Bulletin (UKEQ) Jamie Gurney, who was among those who began looking at the waveform, saying on Twitter he had “no idea if a similar global signal of this nature has ever been observed”.
So what could cause these regular slow waves? Could it have been a meteor strike? An illegal weapons test? Previously undiscovered sea monsters?
Mayotte lies between Tanzania and Madagascar (Google)

Despite the mystery, scientists do have clues as to the cause of the seismic event.
Mayotte, an inhabited French island, was formed as a result of volcanic eruptions around 4,000 years ago, but since then, the area has largely remained volcanically inactive.

However, since May last year, the island nation has been rocked by hundreds of earthquakes, all of which have emanated offshore and the largest of which measured 5.8 on the Richter scale. The island is believed to be moving about two inches southeast each year.
But in recent months, seismic activity has declined, and on the 11 November, no traditional quakes were detected.
According to the National Geographic, analysis by the French Geological Survey suggests the new activity may point to huge movements of magma beneath the earth’s crust, miles offshore and under thousands of feet of water.

Large movements of liquid rock, or reverberations through the magma chamber can cause waves similar to those measured in this instance.
GPS measurements of Mayotte’s slow movements indicate a magma body measuring about a third of a cubic mile is pushing through the subsurface, and this could be the source of the weird waves.




“I don't think I've seen anything like it,” Göran Ekström, a seismologist at Columbia University who specialises in unusual earthquakes, told the magazine.


“It doesn't mean that, in the end, the cause of them is that exotic.”
Another theory is that an underwater volcanic eruption occurred, which would have been capable of producing the waveforms, however no evidence of such an event has yet been seen - satellite images are not believed to have recorded the formation of a “pumice raft” typically seen after a submarine eruption.
Regarding the uniform 17-second waveform, scientists currently estimate the resonance from the magma body could be being sonically filtered by the unique and complicated tectonic geography of the area, only allowing certain frequencies to escape the immediate environment.
While the definitive cause and the conditions in the area remain unknown, the French Geological Survey is planning to undertake ocean bottom surveys to obtain detailed information about this little-explored region, as well as investigating the possibility of a submarine eruption.

https://www.independent.co.uk/news/w...-a8659236.html

[Zippyjuan]

https://www.theguardian.com/science/...-event-mayotte

'Magma shift' may have caused mysterious seismic wave event

<snip>

Now researchers believe they have an answer. Stephen Hicks, a seismologist at the University of Southampton, was on the case fast. He downloaded data from a global network of seismic stations and set about analysing them. “What’s unusual is you see this very long signal travelling most of the way around the world which hasn’t been detected by operational earthquake detection systems,” he said.

By looking at when different seismic stations dotted around the planet detected the rumble, the 30-minute or so signal was traced back to an event that took place at about 9.30am GMT in the sea near Mayotte. Geologists knew that a number of tremors had already rocked the region since a magnitude-5.8 earthquake in May. But earthquakes unleash high frequency seismic waves that vibrate back and forth and from side to side. “This source was completely deficient in those waves,” said Hicks. “It wasn’t picked up because the signal had a very low frequency. It was a low, gentle rumbling.”

The Mayotte vibrations took about 40 minutes to reach Britain, and an hour and 15 minutes to reach Hawaii, more than 11,000 miles from their point of origin.

Such low frequency rumbles are rare but not unheard of. Scientists have detected them before after glacier calving, landslides and sudden shifts of magma beneath volcanoes. There are no glaciers near Mayotte and an underwater landslide would have been picked up by hydrophones in the surrounding ocean, said Hicks. That leaves a magma shift somewhere under the seabed as the prime culprit.

Hicks believes magma may suddenly have drained from a volcanic chamber about 10 miles under the seafloor near Mayotte, setting off the deep rumble that spread around the world. While strong enough to be picked up by sensitive seismometers, the vibrations would have been minuscule: far smaller than a millimetre. “It’s something that you wouldn’t perceive,” he said.

Pierre Briole, a geoscientist at École Normale Supérieure in Paris, has reached a similar conclusion. He believes that a third of a cubic mile of magma may have drained from a volcanic chamber under the seafloor, unleashing deep vibrations when its roof collapsed.

More at link.

[Brian4Liberty]

Move along, nothing to see here...

[Brian4Liberty]