Dozens of Minor Earthquakes in Santorini Prompt Precautionary Measures

Minor earthquakes in Santorini have led authorities to take precautionary measures, including school closures, to ensure safety. Credit: Greek Reporter

Dozens of minor earthquakes have been recorded in recent weeks on Greece’s island of Santorini, raising concerns about ongoing tectonic movements.

In response, authorities have announced the closure of schools on Monday as a precautionary measure to ensure the safety of children and teaching staff.

It is important to note that experts have downplayed the likelihood of an imminent volcanic eruption.

According to the Geodynamic Institute of Athens, on Sunday morning, numerous tremors shook the broader area of the Cyclades.

The strongest earthquake took place at 09:22 local time (07:22 GMT). The tremor was 4.5 on the Richter scale.

More tremors had been recorded earlier, ranging from 3.6 to 4.1 on the Richter scale.

The epicenter of all these earthquakes is located in the area south of Arkesini on the island of Amorgos. The depth of the tremors is estimated to be between six and 13 kilometers.

The history of Santorini’s volcano

Santorini is one of Greece’s most popular tourist destinations. It is known for its iconic caldera, formed by a massive volcanic eruption around 1600 BC.

The island has experienced a series of minor tremors, with magnitudes mostly below 3.5 on the Richter scale. Recent data indicates over 150 to 200 tremors since early January, with some concentrated near the northern end of the caldera.

While these quakes are not volcanic in origin and are attributed to tectonic activity, their frequency has raised concerns about structural safety and potential risks.

Seismologists and government officials in Greece have sought to reassure the public by emphasizing that there is no immediate threat of a major eruption or any other significant geological event.

However, precautionary measures, such as school closures and continuous monitoring by scientific teams, are being implemented to guarantee the safety of residents and visitors alike.

Experts compare the current situation to a similar seismic swarm that occurred more than ten years ago, between 2011 and 2012, which did not lead to an eruption but lasted several months.

Experts downplayed concerns about Santorini Greece recently

Greece’s authorities alleviated concerns regarding the seismic activity at the Santorini volcano following a meeting of officials and scientists at the Ministry of Climate Crisis and Civil Protection on Wednesday.

Greece has a contingency plan dubbed “TALOS,”  which was discussed after “an increase in activity that was recorded in the central fault of the volcano in Caldera . . . For this reason, the Scientific Committee is constantly monitoring the phenomenon, analyzing the data and updating the planning of the corresponding prevention actions,” an announcement released by the Greek authorities said last Wednesday.

The Santorini Caldera is a prominent geological as well as a tourist destination.

Millions of tourists visit every year and is celebrated for its stunning views, iconic whitewashed villages perched on its cliffs (such as Fira, Oia, and Imerovigli), and its ties to the Minoan civilization as well as the legend of Atlantis.

The caldera remains volcanically active, with Nea Kameni, a central island, housing a dormant yet closely monitored volcano.

Related: Scientists Ease Concerns Over Santorini Volcano’s Increased Activity

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