Minor earthquake swarm in Tungnafellsjökull volcano

Today (20-February-2019) there has been a minor earthquake swarm in Tungnafellsjökull volcano. Largest earthquake in this swarm had a magnitude of 1,2 and other earthquakes where smaller in magnitude. Total of five earthquakes were detected.


The earthquake activity in Tungnafellsjökull volcano (north-east of Bárðarbunga volcano). Copyright of this image belongs to Icelandic Met Office.

It is unclear why this earthquake activity is happening. There is possible that some dyke intrusion is happening in the volcano but evidence remain unclear. This might also be crustal adjustment after Bárðarbunga volcano eruption in 2014 to 2015. I don’t think anything more is going to happen besides earthquake activity. Last eruptions happened sometimes 10.000 to 12.000 years ago and those are uncertain.

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Posted in Earthquakes, Magma, Monitoring, Swarm, Tungnafellsjökull, Volcano | 2 Comments

Minor earthquake swarm in Katla volcano

Yesterday (18-February-2019) a earthquake swarm took place in Katla volcano. This is the first earthquake swarm in Katla volcano for a long time and it is unusual how early this activity starts.


Earthquake swarm in Katla volcano. Copyright of this image belongs to Icelandic Met Office.

Largest earthquake in this swarm had a magnitude of 3,0 and other earthquakes in this swarm were smaller in magnitude. Total of ten earthquakes took place in this swarm. This earthquake activity now seems to be over.

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Posted in Earthquakes, Katla / Mýrdalsjökull, Magma, Monitoring, Swarm, Volcano | 3 Comments

Earthquake swarm in Reykjanes volcano (south end of Reykjanes peninsula)

Today (6-February-2019) a earthquake swarm started in Reykanes volcano on Reykjanes peninsula. Last documented eruption in this volcano took place in the year 1926 according to Global Volcanism Program. It was most likely out in the ocean far from the coastline and lasted only for five days


Earthquake swarm in Reykjanes volcano system on Reykjanes peninsula. Copyright of this image belongs to Icelandic Met Office.

Largest earthquake in this swarm had a magnitude 2,8 and the second largest earthquake in this swarm had a magnitude of 2,6. Other earthquakes in this swarm have been smaller in magnitude.

Moving dedicated hosts

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Posted in Earthquakes, Monitoring, Reykjanes, Swarm, Volcano | 2 Comments

Fresh earthquake activity in Öræfajökull volcano (week 6)

During the night of 4-February-2019 a earthquake with the magnitude of 2,6 took place in Öræfajökull volcano. This earthquake was the start of an earthquake swarm that is currently ongoing.


Earthquake activity in Öræfajökull volcano. Copyright of this image belongs to Icelandic Met Office.

This is normal pattern for Öræfajökull volcano in recent months. Rate of earthquake activity in Öræfajökull volcano appears to continue to be going up. This means that injection of magma into Öræfajökull volcano continues at what appears to be at similar rate as before.

Moving website hosting

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Posted in Earthquakes, Magma, Monitoring, Öræfajökull, Swarm, Volcano | 4 Comments

Strong earthquake swarm south of Jan Mayen (Norway)

During early morning of 2-January-2019 a strong earthquake swarm took place south of Jan Manyen (Norway) or about 350 km north of Kolbeinsey island. I don’t know if there are any volcanoes in this area, but it is possible. This might also just be tectonic earthquake swarm. Largest earthquake in this swarm had a magnitude of 5,0 (EMSC information here). Second largest earthquake in this swarm had a magnitude of 4,6 (EMSC information here). Up to ten earthquakes with magnitude between 4,3 to 5,0 took place in this swarm. Icelandic Met Office has listed ten earthquakes on their map, the magnitude is not correct on their map due to distance from the SIL network.


Earthquake swarm south of Jan Mayen (Norway). Copyright of this image belongs to Icelandic Met Office.

Due to distance from any seismometer network a lot of smaller earthquakes were not recorded in this earthquake swarm. It also makes it impossible to know for sure if this earthquake swarm is currently ongoing or if it has ended.

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Posted in Earthquakes, Jan Mayen, Monitoring, Swarm | 3 Comments

Magnitude 3,4 earthquake just off Surtsey island (Vestmannaeyjar volcano)

During the night (31-January-2019) a magnitude 3,4 earthquake took place close to Surtsey island (Vestmannaeyjar volcano). According to Icelandic Met Office this is the largest earthquake in this location since 1992.


The earthquake activity close to Surtsey island. Copyright of this image belongs to Icelandic Met Office.

Few minor earthquakes took place at this location after the largest earthquake. Good detection is difficult due to distance from the SIL network and how remote this location is.

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Posted in Earthquakes, Magma, Monitoring, Swarm, Vestmannaeyjar island, Volcano | 2 Comments

Earthquake swarm in Torfajökull volcano

Today (27-January-2019) at 10:01 UTC an earthquake swarm started in Torfajökull volcano, western part of the caldera. Largest earthquake in this swarm had a magnitude of 3,7 and was felt on nearby farms. There are no tourists in this area of Iceland this time of the year (generally).


Earthquake swarm in Torfajökull volcano. Copyright of this image belongs to Icelandic Met Office.

Largest earthquake in last few hours had a magnitude of 2,3. Other earthquakes have been smaller in magnitude. This earthquake swarm is currently ongoing and information might change without warning.

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Posted in Earthquakes, Monitoring, Swarm, Torfajökull, Volcano | 4 Comments

Minor earthquake swarm in Krýsuvík volcano

During the night (26-January-2019) a small earthquake swarm took place in Krýsuvík volcano. Largest earthquake had a magnitude of 3,0. Other earthquakes have been smaller in magnitude.


Earthquake activity in Krýsuvík volcano. Copyright of this image belongs to Icelandic Met Office.

This earthquake swarm seems to be over and only lasted for less than two hours.

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Posted in Earthquakes, Krýsuvík, Monitoring, Swarm, Volcano | 3 Comments

Two earthquake swarms on Reykjanes ridge

During the week there has been a small earthquake swarm on the Reykjanes ridge, mostly close to the coastline. The first earthquake swarm is closer to the coastline and largest earthquake so far had a magnitude of 3,0 at 14:31 UTC just 7,6 km off Eldey Island (its more of a rock standing up from the ocean). The second earthquake swarm had a magnitude 3,0 earthquake at 04:32 UTC and was 17,5 km away from Geirfugladrangi (also a rock that just stands up from the ocean). All other earthquakes have been smaller in magnitude.


Two earthquake swarms on the Reykjanes ridge. Copyright of this image belongs to Icelandic Met Office.

Both earthquake swarms appear to be ongoing when this article is written.

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Posted in Earthquakes, Monitoring, Reykjanes Ridge, Swarm | Comments Off on Two earthquake swarms on Reykjanes ridge

Fresh earthquake activity in Öræfajökull volcano

Today (6-January-2019). Largest earthquake in this swarm had a magnitude of 2,4. Other earthquakes have been smaller in magnitude.


Earthquake activity in Öræfajökull volcano. Copyright of this image belongs to Icelandic Met Office.

This earthquake swarm seems to be ongoing. There are not many earthquakes happening as is normal for Öræfajökull volcano. This activity is in the normal range of what has been happening in Öræfajökull since 2017.

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Posted in Earthquakes, Magma, Monitoring, Öræfajökull, Swarm, Volcano | 4 Comments