Earthquakes – Page 94 – Iceland geology

August 2, 2015

Earthquake swarm on the Reykjanes ridge

On the 01-August-2015 an earthquake swarm took place on the Reykjanes ridge. This earthquake swarm was far off the coast line and populated areas and was only seen on instruments (seismometers). The earthquake swarm appears to be over for now, it might start again without a warning. Due to the distance from the coast it might be ongoing without being detected, since only largest earthquakes are being detected by Iceland Met Office.

The earthquake swarm on the Reykjanes ridge. Copyright of this image belongs to Iceland Met Office.

Largest earthquake in this swarm had the magnitude of 3,3. Other earthquakes where smaller in magnitude. There is a good chance there is a volcano at this location, it just isn’t well known. Any eruption at this location would not be seen on the surface of the ocean due to depth (1 – 3 km).

Böðvarshólar geophone: I have restarted the geophone in Böðvarshólar. Since I won’t be moving back to Denmark.
Sauðárkrókur geophone: I’m going to try getting into school at Sauðárkrókur in August due to the sudden plan changes. If I get in, I am going to be running a temporary geophone where I am going to be living during the years that I going to be in school learning electronics and other things (including, Danish, German and Spanish).

My geophone website can be found here.

Other: My plan on moving back to Denmark has been delayed permanently. The reason for that are law changes, both in EU and Denmark that make it difficult for people on social welfare to move there. At least that is my understanding of the current changes. They have also been creating problem currently and along with other tax related issues that I had to deal with. I decided that it was too much problem for me to move back to Denmark. I am just going to watch DR 1 – 3 instead along with television channels from Germany. I am at least now debt free in Denmark, since I have paid up my tax debt in Denmark that originally forced me to move back to Iceland.

Due to the reason that I am going to be permanently living in Iceland. I am now moving PayPal and other such items to Iceland. I won’t close down my danish paypal account (that is a big no-no). Paypal buttons are going to be moved to my Iceland paypal site in next few days when I have time. Direct donations option is also going to be moved to my Icelandic bank account rather than my danish one. I am going to close down my danish bank account and my danish paypal account in few years.

July 28, 2015

Summer earthquake activity in Katla volcano

For the past few days there has been summer earthquake activity in Katla volcano. None of the earthquake have reached magnitude 2,0 so far.

Earthquake activity in Katla volcano. Copyright of this image belongs to Iceland Meteorological Office.

This earthquake activity appears to be normal in Katla volcano for the moment. The reason for this activity is melting of the glacier, that means less weight on the volcano, less pressure means changes to the hydrothermal activity inside the caldera of Katla volcano. It can be expected that this earthquake activity is going to continue for a while, at least until October at the longest, or to the time when it starts to snow again in Iceland.

July 28, 2015July 28, 2015

Earthquake swarm on TFZ (Tjörnes fracture zone)

Earthquake swarm started on TFZ on 27-July-2015. At the moment this earthquake swarm is minor with no earthquake reaching the magnitude of 3,0. That might change without warning.

The earthquake swarm on Tjörnes fracture zone. Copyright of this image belongs to Iceland Meteorological Office.

Largest earthquakes so far have reached the magnitude of 2,7, depth is typical of fracture zone earthquake swarm. I expect this earthquake swarm to continue for the next few days at least. There is a risk of larger earthquake in this area, since it does happen that one earthquake swarm starts a new one on a nearby faults. TFZ is the fastest moving fracture zone in Iceland (see picture here).

Sudden plan changes: Due to rather unfortunate results of reality I won’t be moving back to Denmark next year. That is a great disappointment to me. There is however nothing that I can do while I am just on social welfare in Iceland. I don’t know for how long I am going to be living in Iceland, this might take few more years until I manage to move back to Denmark. The reason for this is the tax system and how it treats people on social welfare that move between the Nordic countries. This is due to complex treaties between Iceland and Denmark this did happen. There is nothing I can do about it while I am on social welfare. This means that my next mission is to stop being on social welfare and then move back to Denmark.

Böðvarshólar geophone station: Since I am not moving to Denmark in nearby future. I am going to restart the geophone station in Böðvarshólar. It should go on-line sometimes next weekend I hope. This means that I am going to be able to see earthquakes on TFZ mostly clearly and other nearby activity.

July 23, 2015

Minor earthquake swarm in Torfajökull volcano

Since last weekend there has been a minor earthquake swarm taking place in Torfajökull volcano. This appears to be normal earthquake activity for this volcano, it often has this type of swarm activity, mostly due to changes in hot springs and hydrothermal activity in the volcano.

Torfajökull volcano is located north of Katla volcano. Copyright of this image belongs to Iceland Meteorological Office.

This is normal earthquake activity in Torfajökull volcano as it looks at the moment. Since this has happened before, this earthquake swarm might last for few more days to weeks. It is difficult to know for sure. New hot springs might open up and old one close while this is taking place, so people who are travelling in this area need to be aware of that risk.

July 11, 2015July 11, 2015

Earthquake swarm in Tungnafellsjökull volcano

On Thursday 9-July-2015 an earthquake swarm started in Tungnafellsjökull volcano. So far around 50 earthquakes have been recorded in Tungnafellsjökull volcano, the earthquake swarm is currently ongoing. None of the earthquakes that have happened so far have reached magnitude 2,0 or stronger.

Earthquake activity in Tungnafellsjökull volcano. The yellow dots show older earthquakes. Copyright of this image belongs to Iceland Meteorological Office.

It is my view that Tungnafellsjökull volcano is now preparing for eruption regardless of what Bárðarbunga volcano is going to do (it’s not over there, even if it is on a break at the moment). There is also problem with amount of time when this all started. It is clear that earthquake activity started to increase in Tungnafellsjökull volcano in the year 2012 and it has been increasing since that year. It is clear that with the eruption in Bárðarbunga volcano it seems to have given Tungnafellsjökull volcano more energy and increased it’s activity, why and what the connection between the volcanoes remains unclear at the moment.

Current earthquake activity suggest that this is going to develop in similar way the weeks before the eruption in Eyjafjallajökull volcano. It is not going to be exactly the same, it is going to be close and a lot of earthquakes are going to take place once Tungnafellsjökull volcano starts to heat up for real. When that happens I do not know, this might be take several more years at the longest. There is also a good chance that nothing is going to happen at all.

Donations: Please remember to support my work here so that I can write more and monitor the volcanoes in Iceland (this takes a lot of time and doing a summer job now makes this so much more harder. Due to lack of income for me from this website). Thanks for the support. 🙂

Twitch: When I am not writing about volcanoes or just writing I spend my time playing computer games. Now I have set-up my own Twitch channel that can be viewed here. I plan on doing some test broadcast this weekend.

July 8, 2015July 9, 2015

Earthquake swarm on Reykjanes ridge yesterday (07-July-2015)

Yesterday (07-July-2015) there was a small earthquake swarm on the Reykjanes ridge. Largest earthquake in this swarm had the magnitude of 3,3. Other earthquakes where smaller. At the moment it appears that the activity in this part of the Reykjanes ridge is over.

The earthquake activity on the Reykjanes ridge yesterday. Copyright of this image belongs to Iceland Meteorological Office.

This activity also suggests that more earthquake swarm activity is going to take place in this or around it soon. When is impossible to know for sure.

Donations: Please remember to support my work with donations or by using Amazon. Thanks for the support. 🙂

Twitch: I am currently working on this. It won’t be up and running until I am back in Denmark (I am going to do some minor tests in Iceland). I am trying to use my gaming (the little that is) to increase my income or at least I am going try to do so. The channel is going to remain off-line for the time being. While I setting everything up and doing some testing. I also suffer from a lack of time at the moment to do this properly.

July 7, 2015

Earthquake activity in Western Fracture Zone (WFZ)

Rare earthquake swarm has been taking place in Western Fracture Zone in Iceland. This fracture zone is between Western Volcanic Zone (WVZ) and Snæfellsnes volcanoes. It is mostly dormant with no earthquake activity at all. When earthquake activity happens it tends to be long and sometimes with earthquakes of magnitude up to 5,0. Earthquakes in this swarm have some been deep, with depth below 20 km (I don’t have exact number, forgot to document it).

Earthquake activity on Western Fracture Zone (WFZ). Copyright of this image belongs to Iceland Meteorological Office.

It is difficult, due to lack of data to know for sure what is going on in this area. I do expect this earthquake swarm to continue for few more days at shortest, longest documented earthquake on WFZ lasted around two months and magnitude 4,0 earthquakes took place.

Donations: Please remember to donate to support my work and move back to Denmark next year (I am working on saving up money for that transfer). Thanks for the support. 🙂

July 1, 2015July 1, 2015

Earthquake swarm continues on Reykjanes ridge, small chance of eruption

Today (01-July-2015) earthquake activity continued on the Reykjanes ridge, largest earthquakes so far are magnitude 5,0 (EMSC information here). Second largest earthquake had magnitude 4,8, other earthquakes have been smaller in magnitude. Total of 35 earthquakes that have taken place are larger than magnitude 3,0 and total number of earthquakes when this is written is 537.

Earthquake activity on the Reykjanes ridge. Green stars are earthquakes that are magnitude 3,0 or stronger. Copyright of this image belongs to Iceland Meteorological Office.

Earthquake activity has dropped but is ongoing at the moment. Copyright of this image belongs to Iceland Meteorological Office.

Earthquake activity now happens in pulses, with low activity for 2 – 4 hours before it increases again. It is not clear why this is taking place. Overall earthquake activity is dropping at the moment, it might increase again without a warning.

Yellow alert for risk of eruption

The alert level for this volcano that is now making earthquake noise has been raised to yellow. The change happened during my working hours so I was unable to write about it right away. This means there is a risk of eruption at this location, last eruption in this location was in the year 1879 according to the information I have collected here.

Current warning for the volcano at Eldey is yellow. Copyright of this image belongs to Iceland Meteorological Office.

I don’t know for sure at the moment what the chances are of an eruption at the moment. That should be clearer in next 24 – 48 hours (I hope).

Donations: Please remember to support my work with donations or by using Amazon. Thanks for the support. 🙂

Article updated at 23:50 UTC.

June 30, 2015

Strong earthquake swarm on the Reykjanes ridge

Around 21:00 UTC today (30-June-2015) a strong earthquake swarm started on the Reykjanes ridge. So far the largest earthquake had the magnitude of 4,2, this has not been reviewed so it might be larger or smaller once reviewed.

The earthquake swarm on the Reykjanes ridge, this earthquake activity has not been reviewed yet by Iceland Meteorological Office. Copyright of this image belongs to Iceland Meteorological Office.

The earthquake swarm is dense as can be seen on this image. Copyright of this image belongs to Iceland Meteorological Office.

It is possible to monitor the progress of the earthquake on my geophone in Heklubyggð here.

Donations: Please remember to support my work with donations or by using Amazon. Thanks. 🙂

June 29, 2015June 30, 2015

Deep earthquakes in Bárðarbunga and Tungnafellsjökull volcanoes

Even if the eruption in Holuhraun and Bárðarbunga volcano is over, there is no shortage of activity in Bárðarbunga volcano. With deepest earthquake in past 48 hours having the depth of 28,6 km and earthquakes don’t get a lot deeper than this in Bárðarbunga volcano. At this depth earthquake activity happens due to magma movements rather than tectonic stresses.

Earthquake activity in Bárðarbunga volcano (red dots). Copyright of this image belongs to Iceland Meteorological Office.

Earthquake activity in Tungnafellsjökull volcano

Since the end of the eruption and any major activity in Bárðarbunga volcano. Earthquake activity in Tungafellsjökull volcano has not stopped as expected. The earthquake activity continues at low levels and at great depth. With deepest earthquake in last 48 hours at 26,2 km.

Earthquake activity in Tungnafellsjökull volcano (yellow / orange dots). Copyright of this image belongs to Iceland Meteorological Office.

It is unclear what is going on in Tungnafellsjökull volcano, it is clear that dyke intrusion is taking place at depth, if and when that might result in a eruption is not clear at this moment. This might lead to an eruption or it might not. It is impossible to know at this moment since Tungnafellsjökull volcano has no recorded or documented history of volcano eruptions in historical times.

Donations: Please remember to support my work with donations or by using Amazon. Thanks for the support. 🙂

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