Day: June 26, 2023

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Renewed earthquake activity in Katla volcano

Today (26. June 2023) the earthquake activity in Katla volcano increased again for few hours. Largest earthquake this time had a magnitude of Mw2,5. This earthquake activity has slowed down again. This earthquake activity is ongoing, even if there is no activity at the writing of this article.

A lot of orange dots and blue dots showing earthquake activity in Katla volcano caldera. Time on image is 26. June. 23, 19:55 Icelandic time.
Earthquake activity in Katla volcano. Copyright of this image belongs to Icelandic Met Office.

Its is still unclear what is going on in Katla volcano. There was no change in harmonic tremor following this earthquake activity. Showing that magma did not move in any obvious way when this earthquake activity took place.

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Earthquake swarm in Reykjanes volcano

Today (26. June 2023) an earthquake swarm took place in Reykjanes volcano. This earthquake swarm is in a location in Reykjanes volcano that has been having repeated earthquake activity over the last few months. This strongly suggest that at this location there’s an active dyke that might erupt in the future.

Earthquake swarm out in the ocean close to Reykjanestá in the Reykjanes volcano. A lot of red dots piled on top of each other. Blue to orange dots located elsewhere on the Reykjanes peninsula. Time on map 26. June. 23. 16:05 (Icelandic Time).
Earthquake swarm in Reykjanes volcano. Copyright of this image belongs to Icelandic Met Office.

Largest earthquake in this swarm at the writing of this article had a magnitude of Mw3,0. Other earthquakes have been smaller in magnitude. I am unclear on how many earthquakes have happened in Reykjanes volcano at the writing of this article. This earthquake swarm is ongoing at the writing of this article.