Volcano and earthquake activity in Iceland
Today (29-June-2022) at 08:16 UTC an earthquake with magnitude Mw3,5 took place in Bárðarbunga voclano. This is the second large earthquake in Bárðarbunga volcano in June.
This is the same activity as before with Bárðarbunga volcano. That I did explain in the article on 27-June-2022 when that earthquake took place.
Today (27-June-2022) at 05:49 UTC an earthquake with magnitude of Mw3,3 took place in Bárðarbunga volcano. This is an earthquake because of continued inflation of Bárðarbunga volcano after the eruption between 2014 and 2015.
This earthquake activity in Bárðarbunga volcano is going to continue until the day the magma chamber is filled up again and that might take 10 to 70 years. There are going to be few earthquakes like this every year in Bárðarbunga volcano, with time the earthquakes are going to get fewer and instead get larger in magnitude.
During the night (14-June-2022) an earthquake with magnitude of Mw3,9 took place north-west of Grindavík, this is west of mountain Þorbjörn. This earthquake was felt over all of Reykjanes peninsula. This is the strongest earthquake this is area since 15-May-2022.
A strong aftershock activity followed this large earthquake, with most earthquakes having a magnitude between Mw2,1 to Mw2,9. This earthquake activity is happening in the area that has formed a dyke according to measurements of this area by Icelandic Met Office. As of writing of this article, there are no clear signs that an eruption is about to start.
– This article is shorter because I am currently on limited internet when it comes to amount of data that I can use.
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Currently I can only post articles limited. This is going to be the situation until 5th of July when I get internet connection in Denmark.
Today (8-June-2022) at 05:04 UTC an earthquake with magnitude of Mw3,0 took place in Nátthagakriki that is south-west of Fagradalsfjall volcano. It has been followed by smaller earthquakes with shallow depth of 2 km. It is unclear what is going on and no changes have been seen on GPS monitoring in the last few days for this area.
Older data already shows that magma is flowing into an area of the crust below Fagradalsfjall volcano (mountain). When that might erupt is impossible to know. It is also not possible to know when next cycle of earthquakes and eruptions starts in Krýsuvík-Trölladyngja volcano system.
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Today (28-May-2022) at 08:06 UTC an earthquake with magnitude of Mw4,4 or Mw4,7 (EMSC information can be found here) took place in Bárðarbunga volcano.
This earthquake activity is because of inflation in Bárðarbunga volcano magma chamber. That was emptied after the eruption in 2014 – 2015 and that resulted in collapse of Bárðarbunga volcano by drop of some 60 meters. This inflation now is reversing that process slowly. It is going to be decades until Bárðarbunga volcano erupts again because of this collapse.
On Thursday 26-May-2022 at 20:11 UTC an earthquake with magnitude of Mw3,5. I think this earthquake was maybe felt in populated areas closest to the earthquake. This earthquake was out in the ocean, a good distance from land.
This earthquake possibly is part of the earthquake activity that is happening in Reykjanes peninsula and Reykjanes ridge. It is more difficult to know what is going on in the ocean, than on land.
Posts are going to get delayed for the next few days because I am moving to Denmark.
Today (23-May-2022) at 07:14 UTC an earthquake with magnitude of Mw3,5 took place north-east of Grindavík town. This earthquake was felt in Grindavík and in Reykjavík. The earthquake was located in a area that is either inflating or on the edge of area that is inflating.
According to Icelandic Met Office news, the inflation around Þorbjörn mountain since the start of this earthquake activity is currently at 45mm. I don’t know how much inflation the crust can take in this area before an eruption starts in this area. Any eruption in this area is probably going to start with few craters that shut down with time and then there is just one crater that erupts until the eruption ends.
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Today (22-May-2022) at 09:53 and 09:57 UTC earthquakes with magnitude of Mw3,5 and Mw3,6 took place north-west of Grindavík town. This earthquake was felt and did wake up people according to the news.
There is no signs that this earthquake activity is slowing down. It does come in waves according to Icelandic Met Office. This means that there are period of high activity with low activity between. Currently, at the writing of this article, there is a low activity period ongoing.
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Today (20-May-2022) around 18:00 UTC the earthquake activity off the coast of Reykjanestá, that is part of Reykjanes volcano, increased again after few days of little earthquake activity. The earthquake swarm is ongoing and always changing so this article is going to be short because of that.
Largest earthquake so far had a magnitude of Mw3,8 and the second largest earthquake had a magnitude of Mw3,5. The Mw3,8 earthquake was felt in Grindavík and on nearby towns on Reykjanes peninsula. A Mw3,0 earthquake took place just north of Grindavík and was felt in the town.
Yesterday (18-May-2022) I forgot to write about the earthquake activity that is ongoing north of Grindavík town. This earthquake activity is either in the new dyke that has formed or ongoing path of the dyke in Svartsengi that has now reached north of Grindavík town. I don’t know what applies here. Skjálftalísa map that Icelandic Met Office has strongly suggests a second dyke, but the results are bit unclear. In the area east of Þorbjörn is a older eruption fissure, I don’t know when it erupted, but it might have been as early as 12th to 13th century.
Yesterday (18-May-2022) total of five earthquakes happened with magnitude larger than Mw3,0. Largest earthquake had a magnitude of Mw3,5. Today (19-May-2022) at the writing of this article, only one earthquake with magnitude of Mw3,0 has happened. Earthquake activity seems to be slowing down. I am not sure why that is.
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