There seems to be a slow increase in earthquake activity in Öræfajökull volcano. For the last 48 hours the number seems to be rising. This is how it looks on this graph from Icelandic Met Office.
Earthquake activity in Öræfajökull volcano from 2005 – today. Copyright of this image belongs to Icelandic Met Office.
This increase in earthquake activity suggest that more magma is pushing up the volcano at faster rate. The main idea now is that the magma that is pushing up Öræfajökull volcano is rhyolite in nature and that seems to be confirmed to an extent by the earthquake activity as it now appearing.
Last 48 hours of earthquake activity in Öræfajökull volcano. The volcano is located in south part of Vatnajökull glacier. Copyright of this image belongs to Icelandic Met Office.
How this develops is a big question due to lack of accurate historical accounts. What is known about the eruption in 1362 was written down up to two centuries later and when that happens lack of accuracy is passed into the written record. The written record for the eruption in 1727 – 1728 is slightly better but is far from being accurate.
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