Happy Easter. This Easter day (17-April-2022) in Iceland started with an earthquake swarm in Reykjanes volcano (GVP website is down). With the largest earthquake having a magnitude of Mw3,5 so far. Two other earthquakes took place with magnitude of Mw3,2 and Mw3,0. This earthquake swarm is out in the ocean and suggest that magma activity in Reykjanes volcano is increasing from what it was. This earthquake swarm started between 07:00 until 09:00 this morning and seems to be over at the writing of this article.
This earthquake swarm was not felt according to the news. This activity is taking place far from land for now. This also increases the chance that an eruption might happen out in the ocean. If that happens it might create new temporary islands in this area, since the ocean is rather shallow in this part of the Reykjanes ridge. Earthquake activity seems to be growing in Reykjanes volcano. If that continues is difficult to know, if it does it increases the chance of an eruption considerably in this area.
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Yesterday (12-April-2022) at 21:21 UTC an earthquake swarm started with a magnitude Mw3,9 earthquake. There is a chance there have been a swarm of smaller earthquakes in last few weeks in this area. Since there has been almost always on earthquake swarm activity on this part of Reykjanes peninsula in recent months. The largest earthquake was felt over a wide area in south and west Iceland. Over seven earthquakes with magnitude Mw3,0 have taken place, accurate number is difficult to know for sure at the moment.
The activity now is happening in a volcano named Reykjanes. Last eruption might have happened last time in the year 1831 but that is difficult to know for sure. At the writing of this article around 264 to 280 earthquakes have been recorded by Icelandic Met Office. This number changes every few minutes because the earthquake swarm is strong and ongoing currently. Earthquake activity seems to be increasing at the writing of this article. This situation can change quickly. I am seeing clues that this earthquake swarm is because of magma movement. I think it might result in a eruption, but that is impossible to know for sure now.
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Around 14:00 UTC an earthquake swarm started north of Grindavík town. This look like a tension breaking earthquake swarm and that suggests an inflation is happening again in Fagradalsfjall volcano (mountain). Largest earthquake so far had a magnitude of Mw3,3 and second largest earthquake so far had a magnitude of Mw3,0.
This earthquake swarm is ongoing, but like with all earthquakes swarms in this area it shows a sign of slowing down for few hours before continuing. There is a chance this earthquake swarm might be over. But I am not yet sure if that is the case.
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This morning an earthquake swarm took place in Bárðarbunga volcano. This earthquake activity is because of inflation of Bárðarbunga volcano. Largest earthquake had a magnitude of Mw4,1. Other earthquakes where smaller in magnitude.
This earthquake activity is normal since the end of the eruption in Bárðarbunga volcano in February 2015 it has been inflating. This earthquake activity is going to change and longer time is going to be between larger earthquakes. This type of earthquake activity is only going to go down to 1 to 2 earthquakes a year in next few years. Then down to one earthquake every few years.
Largest earthquake had a magnitude of Mw3,0. Other earthquakes have been smaller in magnitude. Bad weather in last few weeks have prevented good detection of small earthquakes. More earthquake activity might have taken place than appears on Icelandic Met Office maps.
This morning (5-March-2022) an earthquake swarm started north of Kolbeinsey island. Three earthquakes with magnitude above Mw3,0 took place in this swarm and there where few smaller earthquakes recorded. Because of distance from the SIL network only the strongest earthquakes have been detected.
The strongest earthquakes with magnitude of Mw3,1 and Mw3,2. There is still a chance of stronger earthquakes in this area. It is unclear what is going on because this area is remote and under the ocean. If an eruption happens at this location there is a chance it won’t be noticed or just noticed on SIL seismometers.
At 10:11 UTC today (22-February-2022) an earthquake with magnitude of Mw4,8 (Icelandic Met Office) or Mw5,0 (EMSC) took place in Bárðarbunga volcano.
Yesterday (21-February-2022) at 14:08 UTC there had been a earthquake with magnitude of Mw3,0 in Bárðarbunga volcano, along with few smaller earthquakes. This earthquake activity shows that Bárðarbunga volcano continues to inflate after the eruption in the year 2014 to 2015. It is impossible to know when next eruption happens in Bárðarbunga volcano, it might be 10 years from now or 100 years from now. Last eruption in Bárðarbunga volcano before the 2014 eruption was in the year 1902.
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Earthquake activity has been increasing on Reykjanes peninsula as inflation continues after the end of the eruption in Fagradalsfjall mountain. New eruption can start on Reykjanes peninsula without much warning in Fargardalsfjall mountain. The current activity is now north-west of Grindavík town in a volcano named Reykjanes. Continue reading “Earthquake activity in Reykjanes volcano”
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