Earthquake activity in Þórðarhyrna, Bárðarbunga and Kverkfjöll volcanoes

Today (03-June-2014) there was a lot of minor earthquake activity in several volcanoes in Vatnajökull glacier. This is normal earthquake activity and so far nothing to worry about. This appears to be normal micro-earthquake activity in this volcanoes and I don’t see anything suggesting that volcano eruption is going to happen soon.

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Earthquake activity today in volcanoes in Vatnajökull glacier. Copyright of this image belongs to Icelandic Meteorological Office.

Þórðarhyrna volcano

Þórðarhyrna volcano (No GVP link. It is under Grímsfjall volcano GVP information) has been having interesting activity for the past few days. It might have been ongoing longer without being noticed until now. This earthquake activity is interesting since there is normally no earthquake activity in this volcano. Last eruption in Þórðarhyrna volcano took place in the year 1902. Activity in Þórðarhyrna volcano is often connected to eruptions in Grímsfjall volcano.

Bárðarbunga volcano

Some minor earthquake activity has been taking place in the area around dike intrusion location in Bárðarbunga volcano. This is just a minor activity and nothing to worry about.

Kverkfjöll volcano

Some minor earthquake activity is taking place in Kverkfjöll volcano. This earthquake activity is just minor. It is unusual to have earthquake activity in Kverkfjöll volcano. This earthquake activity is clearly a signal of increase of activity in Kverkfjöll volcano, it however does not signal that an eruption is imminent in Kverkfjöll volcano. So far everything remains quiet and might be so for a good while longer. Last eruption in Kverkfjöll volcano was in the year 1968.

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Magnitude 2,5 earthquake south of Hekla volcano

Today (3-June-2014) a magnitude 2,5 earthquake took place south of Hekla volcano. Depth of this earthquake was 9,6 km. It did appear clearly on my geophone in Heklubyggð, it can be viewed on-line here.

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The earthquakes south of Hekla volcano. Some minor earthquake activity in Katla volcano also appears on this image. Copyright of this image belongs to Icelandic Meteorological Office.

There was no signs of harmonic tremor or anything suggesting that volcano eruption was about to start following this earthquake. Everything is quiet for now. Some minor aftershock activity took place following the main earthquake. I am expecting minor earthquake activity to continue to take place at this location. Earthquake activity at this location has happened before in similar way as it did today. When eruption do starts in Hekla volcano, there is going to be a lot more earthquake activity then took place today. Until that happens, there is no reason to worry about this. If you are going to hike on Hekla volcano then please do go safe route, since Hekla volcano is well known for sudden eruptions with no warning at all, besides the earthquake swarm in the hour or two before a start of an eruption.

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