Day: March 1, 2021

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Magma injection confirmed in Krýsuvík volcano [Updated article]

Today (1-March-2021) it was confirmed that Krýsuvík volcano is having a large magma injection from depth into the shallower layers of the crust. Resulting in the current earthquake swarm. At the writing of this article it seems that the magma is located at around 6 km depth. Detected displacement by GPS recordings is now more than 30cm according to the news and scientists.

Rainbow map showing the displacement. Largest dispacement is more than 30cm currently
Inflation map of Reykjanes peninsula showing displacement. Copyright of this image belongs to Icelandic Met Office.

The image above is from here on Facebook. What is also interesting is the activity in Reykjanes volcano. There have also been earthquakes in Reykjanes volcano but they have been fewer but not necessarily smaller in magnitude

Next article is going to be tomorrow (02-March-2021) if nothing major happens.

Update 2-March-2021 at 13:40 UTC

This morning it was confirmed that the volcano that is having a major dyke intrusion is the volcano Krýsuvík and not the volcano Reykjanes as I first thought since earthquake activity for the last 14 months has been most active in this volcano. This article has been corrected in light of this information. The border between the two volcanoes is little unclear on the map and even different between maps.

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Daily update for Reykjanes and Krýsuvík volcanoes 1-March-2021 at 16:27 UTC

This is a short update on activity in Reykjanes and Krýsuvík volcanoes.

There has not been a lot of change in the earthquake activity in Reykjanes volcano. There has been a slight increase in earthquake activity compared to yesterday (28-Febrary-2021) but that increase is not a lot and only from 800 earthquakes to 1000 earthquakes for a 12 hour time period according to the news. Largest earthquake in last 24 hours had a magnitude of Mw4,9 and was felt over a wide area in West Iceland and was clearly felt in Reykjanes area.

Dense pattern of earthquakes on the Reykjanes peninsula. Green stars and a lot of red dots.
The earthquake activity on Reykjanes peninsula. Copyright of this image belongs to Icelandic Met Office.

There have now been two earthquakes outside Reykjanestá out in the ocean. A swarm of earthquakes started to appear at that location few hours ago. It is unclear what this earthquake activity means for now. This earthquake activity is something that needs to be watched since it seems to be connected for some unknown reason to the main earthquake activity on Reykjanes peninsula.

Update at 16:57 UTC

The newest earthquake has the magnitude of Mw5,1 at 16:35 UTC. This earthquake was felt over a wide area in western Iceland and all over Reykjanes peninsula.

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Article updated at 16:58 UTC.

Article updated at 23:35 UTC.