Category: Swarm

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Earthquake swarm in Tjörnes Fracture Zone south of Grímsey island

Since yesterday (10-November-2018) and today (11-November-2018) there has been a earthquake swarm in Tjörnes Fracture Zone (TFZ). Largest earthquake in this swarm had a magnitude of 3,0. All other earthquakes have been smaller in magnitude. At this moment around 130 earthquakes have been recorded in this earthquake swarm. There are no reports of earthquakes in this swarm being felt by nearby population areas.


The earthquake swarm south of Grímsey island. Copyright of this image belongs to Icelandic Met Office.

This earthquake swarm seems be ongoing, even if it has slowed down at them moment. It is a question if it is going to continue or stop in the next few hours to days.

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Earthquake activity in Grímsvötn volcano

During the night there was an earthquake swarm in Grímsvötn volcano. Largest earthquake in this swarm had a magnitude of 2,6 and other earthquakes were smaller in magnitude.


Earthquake activity in Grímsvötn volcano. Copyright of this image belongs to Icelandic Met Office.

Yesterday (06-November-2018) there was also earthquake activity in Grímsvötn volcano but it was at lot smaller scale then what happened during the night. At the moment there are no signs that Grímsvötn volcano are about to erupt. There has not been any more earthquake activity today.

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Minor earthquake swarm in Tjörnes Fracture Zone

Today (6-November-2018) there has been a minor earthquake swarm in Tjörnes Fractures Zone (TFZ). Largest earthquakes in this swarm had a magnitude of 2,7 and 2,6. Other earthquakes that have happened so far have been smaller in magnitude.


Earthquake swarm in Tjörnes Fracture Zone. Copyright of this image belongs to Icelandic Met Office.

This earthquake swarm seems to be mostly over at the moment. There is a good change it might resume at later time, if it isn’t completely over now. New earthquake swarm might also start in this same area without warning. It is impossible to know for sure what happens next in Tjörnes Fracture Zone.

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Earthquake swarm in Krýsuvík

Today (28-October-2018) at 10:52 UTC an earthquake with magnitude of 3,0 took place in Krýsuvík volcano and since then there has been a minor earthquake swarm happening at that location. This earthquake swarm is not part of the volcano, this looks like a tectonic earthquake swarm due to rift zone activity in this area.


The earthquake swarm in Krýsuvík volcano. Copyright of this image belongs to Icelandic Met Office.

The strongest earthquake was felt in Hafnarfjörður, Reykjavík and other nearby towns. At the moment it is unclear if this earthquake swarm is just starting or if it has already ended. It is possible that more earthquakes are going to happen in this area without warning.

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Earthquake swarm north of Kolbeinsey island

Today (19-October-2018) a earthquake swarm took place north of Kolbeinsey island. Due to distance from the SIL network only the largest earthquakes are being recorded.


Earthquake swarm north of Kolbeinsey island (green star). Copyright of this image belongs to Icelandic Met Office.

Largest earthquake detected so far has a magnitude of 3,3 and the second largest has a magnitude of 3,0. Other earthquakes that are being detected are smaller in magnitude but all are over 2,5 in magnitude. The sensitivity of the SIL network isn’t good this far from the coastline. It is unclear if this earthquake swarm is ongoing or not.

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Earthquake activity continues in Öræfajökull volcano

Earthquake activity continues in Öræfajökull volcano as before. Earthquake swarm happen now every few days and most of them are minor in terms of magnitude and number of earthquakes that happen. Today (15-Ocotober-2018) the largest earthquake that happened in Öræfajökull volcano had a magnitude of 2,1 and 1,5. Other earthquakes are smaller in magnitude.


Earthquake activity in Öræfajökull volcano. Copyright of this image belongs to Icelandic Met Office.

This earthquake activity is due to magma flowing into Öræfajökull volcano at depth. What that depth is unclear at the moment. This earthquake activity happens in pluses with quiet period between them.

Update on the donation for new hardware

Thanks to donations last week I almost have all the money to buy a Raspberry Shake seismometer. I am still missing around ~268€ in order to buy the Raspberry Shake station. With this new hardware I am going to be able to provide a lot better data from what I currently have. This includes I hope a spectrograph of an earthquake (I need a linux computer for this. I’ll set one up once I’ve moved to Spain). I can’t do that with my current old hardware and software. For those that have donated already. Thanks so much for the support. 🙂

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Earthquake swarm on Reykjanes peninsula

Today (3-Ocotber-2018) there has been a earthquake swarm on Reykjanes peninsula. Most earthquakes have been small and not found, but the largest earthquake in this earthquake swarm had a magnitude of 3,2.


The earthquake swarm on the Reykjanes Peninsula. Copyright of this image belongs to Icelandic Met Office.

The largest earthquake was felt in the blue lagoon. It seems that this earthquake swarm has stopped for now.

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Earthquake activity in Öræfajökull and Bárðarbunga volcanoes

This is article is set-up in this way to save me some time due to the fact that I have to go to work tomorrow at 07:00 UTC (this is until 23rd October 2018).

Öræfajökull volcano

Since yesterday (01-October-2018) there has been a earthquake swarm in Öræfajökull volcano. There has been several dozen earthquakes in this earthquake swarm. Most of them are small. Largest earthquake in this swarm had a magnitude of 3,1 and was felt on nearby farms (there is no town or village close to Öræfajökull volcano). This earthquake swarm is currently ongoing.

Bárðarbunga volcano

A magnitude 3,0 and 3,6 earthquakes happened in Bárðarbunga volcano today. The smaller earthquake happened early in the morning but he larger one at 13:08 UTC. There hasn’t been any large amount of earthquake activity following this earthquakes. This is now the normal pattern of Bárðarbunga volcano since the eruption 2014 – 2015 (Holuhraun).


Earthquake activity in Bárðarbunga and Öræfajökull volcanoes. Copyright of this image belongs to Icelandic Met Office.

Donations

Please remember to support my work with donations. See pinned article for what I need for Raspberry Shake seismometer network upgrade. Thanks for the support. 🙂

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Minor earthquake swarms in Öræfajökull volcano

An earthquake swarm started in Öræfajökull volcano yesterday (26-September-2018). Largest earthquake in this swarm had a magnitude of 1,2. Other earthquakes had a magnitude of 0,0 and up to 0,5.


Earthquake activity in Öræfajökull volcano. Copyright of this image belongs to Icelandic Met Office.

This earthquake activity is because of magma is moving inside Öræfajökull volcano. This movement is mostly slow and often stops at times. This is going to continue for a long while longer in current phase. There is no risk of eruption in Öræfajökull volcano at the moment.

Donations

Please remember to support my work with donations. At the moment I am trying to save up for Raspberry Shake sensor to replace my current hardware that Böðvarshólar geophone station. The computer I used has already failed and I am currently using temporarily set-up (it often fails). I’ve gotten some donations but not enough to buy the Raspberry Shake sensor I need. Please see pinned article for more details. Thanks for the support. 🙂

Social Media

I have made the decision to open up my social media a little more. This is only the social media that I use to post pictures to. I can be followed on Twitter using the twitter buttons on the side on this website. If you only want geology information please use Iceland geology twitter. I retweet a lot of stuff on my regular twitter.

My Instagram can be found here (username jonfr500)
My Snapchat is jonfr500

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Magnitude 3,0 earthquake in Öræfajökull volcano

This evening (21-September-2018) at 21:15 UTC a magnitude 3,0 earthquake happened in Öræfajökull volcano. This was followed by a swarm of earthquakes and largest earthquake after the magnitude 3,0 earthquake had a magnitude of 1,4 so far.


Earthquake activity in Öræfajökull volcano. Copyright of this image belongs to Icelandic Met Office.

I expect the largest earthquake to have been felt in nearby farms that are close to Öræfajökull volcano (some are in it roots). In recent weeks the magnitude of earthquakes in Öræfajökull volcano has slowly been moving upwards. This change is not by much at the moment.

Donations

Please remember to support my work with donations. It helps me a lot. I am also trying to buy new Raspberry Shake sensors. Please see pinned article for more details. Thanks for the support. 🙂