Bardarbunga Update 20140903

The latest assessment of the Bardarbunga eruption provided by the amazing folk at the Volcano Café. Recommended reading once more. Thank you Carl and Henrik.

VolcanoCafé

Holuhraun eruption looking north from Dyngjujökull (Photograph by Einar Gudmann) Holuhraun eruption looking north from Dyngjujökull (Photograph by Einar Gudmann)

Since the appropriate Icelandic authorities have today publicly mentioned the possibility of a large, acidic and explosive eruption at Bardarbunga, we now feel free to inform you that this possibility has been discussed by the Dragons, behind closed doors, for well over a week. The key information comes from this official IMO graphic:

The first premise is that earthquakes do not occur in molten rock. Nor do they form a clearly visible ring shape such as the above except under one circumstance – they do so around a body of liquid, in this case magma. A conservative estimate places the size of this body of magma at 8 km diameter, height unknown but most likely on the order of 3 – 6 km, depth also unknown but relatively shallow. Using simple geometry, 4 x Pi x r3 / 3…

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