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Dual earthquake was registered off Santorini

Dual earthquake was registered off Santorini


Two of 4.2 sets the size between Santorini and Amorgos in the early hours of Thursday morning, shortly after the other- an important phenomenon known as a dual earthquake or “double earthquake”.

Given that experts have also recorded a 6 cm in Caldera since August, there is an increasing scientific consensus that it cannot be excluded as a volcanic eruption.

Meanwhile, due to the recent seismic activity, the authorities also declared a state of emergency on the near island of Amorgos.

About the double earthquake

About an hour of midnight, between Wednesday and Thursday, two earthquakes hit 4.2 people in just one minute of each other-a phenomenon known as a double earthquake (Deq).

The first earthquake took place at 01:02, with its center, which is 23 km southwest of Amorgos, at a focus of 11.4 km. After one minute, according to the revised solution of the Geodamic Institute, a second tremor was recorded in the same earthquake, this time with a focal depth of 12.8 km.

According to the Scientific Research Magazine, Deqs is defined as two seismic events where the size of the size does not exceed 0.2 units, the spatial separation is less than 100 km, and the time separation between them is small. Deqs is a major seismic phenomenon due to its repercussions on the redistribution of strain, rift and subsequent subsequent activity.

Santorini Caldera has turned 6 centimeters

At the same time, in a statement, Thanasis Ganas, Director of Research at the Geological Institute, said that Santorini Caldera witnessed up to 4 centimeters from August 2024 to the present time. In addition, experts noticed an east horizontal transformation of about 6 centimeters.

This is the result of increased activity. I can't say it is worrying at this moment because we noticed the same phenomenon in 2011-2012, and no eruption was followed. However, a major change must be closely monitored. “

He explained that these changes are caused by the high magma from the scarf to the shell and then accumulate in the magma room, which is located under the Nea Kamena and between the Nea Kamena and OIA at a depth of 3 km.

He pointed out that “initial measurements” show that the size of the magma has increased by 5 million cubic meters, while during the recent volcanic crisis in 2011-2012, it increased by 15 million cubic meters. However, since this phenomenon continues, we must continue to monitor it to understand how it developed. “

Ganas has excluded any immediate danger to activate Amorgos's mistake, which is still another major axis of scientific investigation. Seismologists warn that if it is possible to activate the Amorgos error – which was received between Amorgos and Santorini, it can lead to one of the most extreme scenarios, including an earthquake of more than 6.0 size and tuni.

“A volcanic eruption cannot be excluded”

Meanwhile, Kostas Papazatos, professor of physics in the rock cover, seismology, and applied geophysics at the University of Tsalonica (ATH) and representative of the Special Committee of the experts, mentioned the main newsletter of Ant1 that the volcano was suffering September, a long time before the sequential sequence in weeks The past few. He stressed that this is a separate phenomenon under investigation.

Papazachos did not rule out the possibility of a volcanic eruption, saying that “the volcano is no longer in a sleeper.”

This opinion is increasingly shared among earthquake scientists. Recently, during a separate television interview, the scientist Costas Cinnwlacis stated that although he does not rule out the possibility of eruption, he sought to calm public concerns, and reassured that scientists will discover an imminent eruption, allowing time for backup measures.

What does that mean?

A mixture of Deqs, the movement of Caldera, and the accumulation of magma raises concerns about possible volcanic disorders.

While a similar activity in 2011-2012 did not lead to an eruption, experts closely monitor the situation of any signs of the escalation of seismic or rock activity.

Sources

1/ https://Google.com/

2/ https://www.tovima.com/science/double-earthquakes-recorded-off-santorini/

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