The earthquake swarm that started today (16-November-2019) on the Reykjanes ridge in the volcano called Reykjanes [Eldey] continues. At the writing of this article 29 earthquakes larger than magnitude Mw3,0 have happened at this location on the Reykjanes ridge. Largest earthquake so far had a magnitude of Mw4,5. The earthquake swarm slowed down after 17:00 and has remained in slow activity since then but it is ongoing as of writing of this article.
The earthquake swarm on the Reykjanes ridge. Copyright of this image belongs to Icelandic Met Office.
Density of the earthquake swarm. Copyright of this image belongs to Icelandic Met Office.
Largest earthquakes in this area have reached magnitude Mw5,0 and last time that happened was in June and July-2015. I wrote about all those earthquakes swarms.
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I don’t have a lot of information about what is going on. The area that has having earthquake swarm is located at Geirfugladrangi good 20 to 40 km off the coastline. This earthquake swarm is strong and might even get stronger. I don’t know yet if this earthquake swarm is due to tectonic forces or because magma has started pushing to upper levels in the crust. There are no clear signs of eruption happening at this location at the writing of this article. The volcano in this area is called Reykjanes.
Earthquake swarm on Reykjanes ridge in a volcano called Reykjanes. Copyright of this image belongs to Icelandic Met Office.
This activity appears to be moving quickly and there’s a lot going on and information in this article is going to get outdated quickly.
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