Category: Swarm

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Earthquake with magnitude of Mw7,5 in South Turkey

Today (06. February 2023) at 10:24 UTC an earthquake with magnitude of Mw7,5 took place. This earthquake took place less than 12 hours after the Mw7,8 earthquake took place 50 km south of this earthquake. USGS is reporting (seen on CNN) that 10000 people might have died in this earthquakes because of were it is located. The real number might be higher. News is also reporting that 582 people have died in Syria because of this earthquakes. There is heavy aftershock activity in this area and the second largest aftershock had a magnitude of Mw6,7 at 01:28 UTC.

Earthquakes as shown by USGS map. Large orange dots showing the earthquake activity in different sized rings. Size of rings depends on magnitude. More then dozen rings.
Earthquake activity as it is on USGS map. Public domain/USGS.

Information about the Mw7,5 earthquake can be found here at EMSC and here at USGS. Information about the Mw6,7 earthquake can be found here at EMSC website.

Update (22:38 UTC)

The magnitude Mw7,5 earthquake has been confirmed to be an aftershock by USGS.

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Earthquake swarm in Krýsuvík-Trölladyngja volcano

Today (21. December 2022) an earthquake with magnitude of Mw3,4 took place in Krýsuvík-Trölladyngja volcano. This earthquake is because of inflation in Fagradalsfjall volcano. This possibly means that the inflation in Fagradalsfjall volcano is reaching critical point and might result in a eruption soon, when that point is reached is difficult to know.
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Earthquake swarm 3 km north of Grindavík town

Today (19. December 2022) and yesterday (18. December 2022) an earthquake swarm took place 3 km north of Grindavík town in the Reykjanes volcano. Largest earthquake had a magnitude of Mw2,9 and was felt in Grindavík. Earthquakes with magnitude Mw2,0 are felt in Grindavík, possibly even smaller earthquakes. At the writing of this article, this earthquake swarm is ongoing but weather is blocking almost all of the automatic earthquake detection.
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Earthquake swarm continues 47 km east of Fonti in Eastern Iceland

During the night and today (18. December 2022) the earthquake swarm around 47 km east of Fonti in Eastern Iceland continued. Largest earthquake at the writing of this article had magnitude of Mw3,3 but another and few smaller earthquakes, but with magnitude of Mw3,1 took place in the same location. Several earthquakes with magnitude above Mw2,5 also took place.
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Earthquake swarm east of Iceland (45 km east of Fonti)

Today (15. December 2022) an earthquake swarm has been going around 45 km east of location known as Fonti in eastern Iceland. This location is out in the ocean and its unclear why this earthquake activity is happening. There are no volcanoes in this part of Iceland and no known fault areas. Since this is among the oldest parts of Iceland.

Largest earthquake in this swarm recorded so far, had the magnitude of M2,9. Distance from the SIL network prevents detection of smaller earthquakes in this area.

Picture of Iceland showing dots that show the smaller earthquakes all over Iceland. In eastern Iceland in the ocean, there's a cluster of small earthquakes shown in red dots and orange dots.
Earthquake swarm far east of Fonti in eastern Iceland. Copyright of this image belongs to Icelandic Met Office.
Close up image of the earthquake activity from Fonti area from Skjálfta Lísa earthquake viewer on Icelandic Met Office website.
Close up image of the earthquake activity from Skjálfta Lísa earthquake viewer on Icelandic Met Office website. This only shows reviewed earthquakes. Copyright of this image belongs to Icelandic Met Office.

There is a risk of stronger earthquakes in this area. If this earthquakes are going to be felt in populated areas is unlikely unless this earthquake activity gets really big. Since this earthquake activity is far from the coastline and there’s almost no population in this parts of Iceland.