Scientists are losing sight of a strange seismic event on 11 November to earthquake, and they received earthquake sensors around the world.
While the cause of the mysterious confusion continues to be unknown, it is sometimes related to immense immune seismism, in the Mayotte island archipelago in the Indian Ocean, but in the end, these unusual tremors are unclear.
"I do not think I saw something like that," said Göran Ekström, seismologist from Columbia University National Geographic Anomaly for November 11
Almost six years ago, when this strange sign appeared, the seismologist was surprised by another strange abusive activity: 50 km (50 km) from the east coast of Mayotte.
The islands and islands network, roughly between Africa and Madagascar, are in France but have also been claimed in the north of the island of Komoros.
On the morning of 10 May, an earthquake that appeared without warnings fell from this region, and they were not left alone, but still disappeared after hundreds of tremors.
Most of them – 5.8 magnitude event on May 15 – The largest fire ever recorded in the Comoros basin, and since swarm has generally been intensively reduced, revival magnitude 5.1 was only this week, so subtle remorse did not end this turbulence of the earth.
While the earthquake rumors are disturbing sounds, they are not necessarily dangerous events.
In this case, the study of the École normale supérieure in Paris proposes a preliminary study of the seismic swarm by temblores that can only be tectonic movements, and must also participate in volcanic activities in the region.
We will arrive next 11th of November.
– ******* Pax (@matarikipax) November 11, 2018
Less than three weeks ago – during the swarm, but one day when the vibrant swarms were not really detected – scientists recorded something else: the bizarre vibrant, long and flat hummed consistently, the usual quake signature activity without spiky hips.
Instead, the "high frequency atypical signal" – the French Bureau de Recherches Géologiques (BRGM) – was repeated in a wave of 17 seconds every time it lasted about 20 minutes.
"We do not know much about what we know," said Nicolas Taillefer, a researcher at BRGM's seismic and volcanic risk unit. National Geographic.
"The signals at our stations are quite new."
Which does not mean that the team does not have a hypothesis. As we suspect by the seismic serpent, the researchers believe that anomalous vibration is also related to volcanic activity, perhaps a major magma movement under the Indian Ocean.
If so, something else can also be explained: Mayotte is not stationary.
Expressing GPS reads as of July – began swarm – the island has changed to around 60 mm (2.4) east and 30 mm (1.2) south.
According to one study, this move could be due to the closure of the nearest magma reservoir, although the additional investigation required to verify it.
SBV, like other stations, show a monochromatic long signal with the 17 ~ (Rayleigh wave mono-freq?). But 1Hz SBV overpriced (ground plots) signals (?) Also shows signals, repeating the sources, about 50. Perhaps some large volcanic sources, superficial and oscillating. pic.twitter.com/bPqdQFwAgm
– Anthony Lomax ??? (@ ALomaxNet) November 11, 2018
When hypothesis is correct, no one can tell what might happen, but modeling indicates that while Mayott continues to move.
Whether we find a mysterious sign, no one knows.
"These observations thus protect the hypotheses of a combination of tectonic and volcanic effects, such as the seismic sequence and the geological phenomenon that causes volcanic phenomena," explains BRGM.
"This hypothesis must be confirmed by future scientific studies".