Category Archives: Harmonic tremors

All traffic to Askja volcano forbidden due to a large landside yesterday (22-July-2014)

According to Icelandic Meteorological Office, a large landslide fell yesterday (22-July-2014) around midnight in Askja volcano, the landslide did go into Askja lake creating a flood wave that was 100 to 200 meters high. It did reach the … Continue reading

Posted in Askja, Harmonic tremors, Landslide, Monitoring, Volcano | Leave a comment

Earthquake swarm in Grímsfjall volcano

Today (27-March-2014) an earthquake swarm took place in Grímsfjall volcano. This activity is connected to current minor glacier flood from Grímsvötn glacier lake that is now taking place. The glacier flood it self is an minor and is … Continue reading

Posted in Dike intrusions, Earthquakes, Glacier flood, Grímsvötn / Grímsfjall, Harmonic tremors, Monitoring, Swarm, Website | 8 Comments

Harmonic tremor detected in Þórðarhyrna volcano

On the 21-November-2013 there was an earthquake swarm in Þórðarhyrna volcano (part of Grímsfjall volcano). This was not large earthquake swarm or a strong one. With the largest earthquake just having the magnitude of 1,9. While I did … Continue reading

Posted in Dike intrusions, Earthquakes, Harmonic tremors, Magma, Monitoring, Swarm, Vatnajökull glacier, Volcano, Þórðarhyrna | 2 Comments

Minor dike intrusion into Bárðarbunga – Hamarinn volcanoes

It seems that yesterday (02-September-2013) a minor dike intrusion took place in Bárðarbunga – Hamarinn volcanoes. This created an minor harmonic tremor yesterday on nearby sil stations. There were earthquakes following this events, the strongest one had the … Continue reading

Posted in Bárðarbunga, Dike intrusions, Earthquakes, Hamarinn, Harmonic tremors, Magma, Monitoring, Vatnajökull glacier, Volcano | Comments Off

Interesting harmonic signals appearing around Vatnajökull glacier

In the past few hours an interesting harmonic signals have been taking place on two sil stations (so far) around Vatnajökull glacier. I do not know what is creating this harmonic tremor spikes on them, it might be … Continue reading

Posted in Hamarinn, Harmonic tremors, Hydrothermal, Monitoring, Vatnajökull glacier, Volcano | Comments Off

Possible glacier flood from Skaftár cauldron

It is possible that glacier flood from Skaftákötlum cauldron has started some hours ago. According to Rúv, Icelandic Meteorological Office is now monitoring for signs that glacier flood has started. Changes in conductivity in glacier rives from Vatnajökull … Continue reading

Posted in Glacier flood, Hamarinn, Harmonic tremors, Hydrothermal, Monitoring, Vatnajökull glacier, Volcano | Comments Off

Comparison of volcano eruptions

When there is nothing going on in Iceland. It is good to prepare for the future by checking out what has happened in the past. Here is a comparison of harmonic tremor data from few past eruptions. I … Continue reading

Posted in Eyjafjallajökull, Glacier flood, Grímsvötn / Grímsfjall, Harmonic tremors, History, Katla / Mýrdalsjökull, Magma, Monitoring, Tremor plots, Volcano | Comments Off

Harmonic tremor level drops in Grímsfjall volcano

During the night. Harmonic tremor levels started to drop in Grímsfjall volcano. The reason for this harmonic tremor level increase remain unknown and unclear. But no volcano related activity has been seen or recorded so far in Grímsfjall … Continue reading

Posted in Earthquakes, Glacier flood, Grímsvötn / Grímsfjall, Harmonic tremors, Hydrothermal, Monitoring, Volcano | Comments Off

Unclear what is going on in Grímsfjall volcano

It is unclear what is going on in Grímsfjall volcano at this moment. Harmonic tremor level continue to rise. They are currently way above what is normal for minor glacier floods from Grímsfjall volcano. This might be a … Continue reading

Posted in Glacier flood, Grímsvötn / Grímsfjall, Harmonic tremors, Hydrothermal, Magma, Mountain, Volcano | 17 Comments

Weak harmonic tremor pulse from Hamarinn volcano

Since around 19:00 UTC (16.10.2012) a harmonic tremor pulse has been taking place in Hamarinn volcano (Bárðarbunga volcano). There is in my view no eruption taking place at the moment. This is most likely a dike intrusion of … Continue reading

Posted in Bárðarbunga, Dike intrusions, Hamarinn, Harmonic tremors, Magma, Monitoring, Volcano | Comments Off