This information is going to get outdated extremely fast.
- Earthquake activity remains high.
- Cauldron have formed in Vatnajökull glacier just SE and SSE of Bárðarbunga volcano.
- The cauldrons are 4 to 6 km long and about 1 km wide.
- No harmonic tremor have been seen, but that might have its own reasons.
The cauldrons that have been spotted today in Vatnajökull just SE and SSE of Bárðarbunga volcano are in the south end are of the current dyke. What is also important, they are also in an area were magnitude 5,0 earthquake did happen few days ago, in a area that has not had any dyke activity since 16-August-2014 when this all started. It is still unclear what happened to all the water in this melt, the glacier in this area is 400 to 600 meters thick and this is not a little melt that has taken place in the glacier. There is a chance the water did go to Grímsvötns lake (caldera like in Grímsfjall volcano), but that remains unclear at the moment.
I am going to post more information about this once I have them.
Updated at 00:14 UTC on 28-August-2014.