Day: October 15, 2016

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Few earthquakes in Hofsjökull volcano

Today (15-October-2016) few earthquakes took place in Hofsjökull volcano. This where just few earthquakes with the largest earthquake having the magnitude of 1,4. Slight to the east a magnitude 2,3 earthquake happened, that however was a intra-plate earthquake and is not connected to any volcano.

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

This earthquake activity in Hofsjökull volcano appears to be a response to a stress change in the area, even if sits on its own rift zone (Skagafjörður rift zone, science paper). It is my guess that the source of this stress changes can be found in Bárðarbunga volcano and the movement of the eastern rift zone that is currently happening. I’m not expecting any eruption from Hofsjökull volcano, it’s not known when last eruption took place in Hofsjökull volcano. More earthquakes might happen in the future due to stress changes in the upper crust close to Hofsjökull volcano or in Hofsjökull volcano.

Update on 16-October-2016

The Icelandic Met Office has updated the earthquakes location. Now they are all in Hofsjökull volcano. Six earthquakes happened and the largest one had the magnitude of 2,3. No intra-plate earthquake happened, that was just a wrong manual location.

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Updated locations of the earthquakes in Hofsjökull volcano. Copyright of this image belongs to Icelandic Met Office.

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Article updated on 16-October-2016 at 16:23 UTC. Updated earthquake map added.

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Minor earthquake swarm in Katla volcano

This morning (15-October-2016) a minor earthquake swarm took place in Katla volcano (east part of the caldera). This was a minor earthquake swarm, with the largest earthquake having a magnitude of 2,7.

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The earthquake activity in Katla volcano. Copyright of this image belongs to Icelandic Met Office.

All of the earthquakes that took place where small. With the second largest earthquake only having a magnitude 2,3. After the main earthquake swarm was over the activity quieted down and has remained quiet. The main earthquake activity ended at 08:58 UTC this morning. With only few earthquakes taking place after that.

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Earthquake swarm in Bárðarbunga volcano

Earthquake swarm with around 30 earthquakes took place during the night in Bárðarbunga volcano. The largest earthquakes had magnitude of 3,5. Yesterday (14-October-2016) a magnitude 3,3 earthquake took place in Bárðarbunga volcano.

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The earthquake activity in Bárðarbunga volcano. Copyright of this image belongs to Icelandic Met Office.

Other earthquakes in this earthquake swarm where smaller in magnitude. This earthquake swarm is also interesting for the fact that it seems to change the stress levels around Bárðarbunga volcano started earthquakes in nearby volcanoes. I don’t know for sure what is happening, what has been confirmed by GPS measurements is that Bárðarbunga volcano is currently inflating and that is pushing the plug that collapsed down in the eruption 2014 – 2015 up again and that is creating current earthquake activity in Bárðarbunga volcano.

Article updated at 20:11 UTC. Word fixes.