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Greece's tourism jewel Santorini on alert after seismic activity


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ATHENS, Feb 2 (Reuters) - Greek authorities have warned of an increase in seismic activity around the Aegean tourist island of Santorini, advising people to avoid four ports, empty their pools, refrain from gathering in indoor spaces and shut schools on Monday.

More than 200 tremors have been registered since Friday between the volcanic islands of Santorini and Amorgos, the civil protection ministry said in a statement on Sunday, citing experts tasked with assessing earthquake risks and monitoring Greece's volcanic arc.

The experts, according to the ministry, have concluded that the tremors are not linked with volcanic activity and have proposed precautionary measures including the Feb. 3 school closures, which have been extended to the islands of Amorgos, Ios and Anafi.

They have urged people on Santorini to stay away from the small ports of Ammoudi, Armeni, Korfos and the harbour of Fira, which serves mainly cruise ships. Many of Santorini's ports are surrounded by sheer rock faces.

In Athens, Prime Minister Kyriakos Mitsotakis chaired an emergency meeting on the issue, as Santorini authorities prepared for a potential evacuation.

https://www.reuters.com/world/europe/greece-issues-santorini-seismic-activity-warning-2025-02-02/

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2 hours ago, Alchopwn said:

Atlantis 2.

Yeah, Thera/Crete/Minoan.

I heard about the earthquakes on Dutch news this morning, but what they said sounded a lot more serious and threatening than what I found online.

If Santorini blows up like Thera did 3,600 years ago, we'll have something else to worry about.

Edited by Abramelin
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From what I'm seeing they don't expect volcanic activity but are saying an earthquake over a 6.0 could happen soon. I saw this morning there's been over 250 smaller quakes since Friday. It sounds like they're hitting every few minutes now.

Schools shut, more flights scheduled as quakes constantly shake Santorini | Reuters

Edited by susieice
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I suspect these tremors are relatively shallow depth compared with the magma system. 

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13 hours ago, Doc Socks Junior said:

I suspect these tremors are relatively shallow depth compared with the magma system. 

Most likely.

21 hours ago, Abramelin said:

If Santorini blows up like Thera did 3,600 years ago, we'll have something else to worry about.

Not really, but that's not happening. 

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1 hour ago, Piney said:

 

Not really, but that's not happening. 

Let's hope so.

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So I actually looked at the EQ locations. All to the NW of the island proper. Also, all allegedly at 10 km depth. Slightly suspicious.

Some notes about the magma chamber: there is both a deeper reservoir (10-14 km) as well as a shallower one (~4 km). The shallower one is centered roughly in the caldera. There was some flux into it pretty recently, about a decade ago?

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50 minutes ago, Doc Socks Junior said:

So I actually looked at the EQ locations. All to the NW of the island proper. Also, all allegedly at 10 km depth. Slightly suspicious.

Some notes about the magma chamber: there is both a deeper reservoir (10-14 km) as well as a shallower one (~4 km). The shallower one is centered roughly in the caldera. There was some flux into it pretty recently, about a decade ago?

So maybe the quakes were caused by a reservoir dumping out? Or creeping over...

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46 minutes ago, Piney said:

So maybe the quakes were caused by a reservoir dumping out? Or creeping over...

Ah, but the shallow reservoir of Santorini is pretty in the caldera itself (which these earthquakes are not). However, the EQs are right near Kolumbo, a different submarine volcano...

Odd that there hasn't been a connection made there yet in any of the coverage. There's a fault roughly connecting (since 2 points always make a line...lol) the two. Santorini is just more well known, I suppose?

EDIT: Source for some information about Kolumbo

Heralds of Future Volcanism: Swarms of Microseismicity Beneath the Submarine Kolumbo Volcano Indicate Opening of Near‐Vertical Fractures Exploited by Ascending Melts - Schmid - 2022 - Geochemistry, Geophysics, Geosystems - Wiley Online Library

 

Edited by Doc Socks Junior
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