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originally posted by: muzzy
a reply to: Moshpet
may have just been clouds
but you can see the steam just over the brow of the hill, coming from the river, or is it clouds too?
good screenshot, saved that one, thanks
The caldera in Bárðarbunga volcano is dropping and it is dropping fast. According to latest news from Rúv (see link below) the caldera is dropping up to 90 cm/day. That is a huge drop for a mountain. There is also clue that central part of the caldera floor is now so soft that it no longer breaks and creates earthquakes, it is just buckling under the strain. This increases the risk of eruption in the central caldera up to almost certainty levels (for me that is 96+% chance of happening). The latest news from Rúv tell that the thickness of the glacier in the central part of the glacier is up to 850 meters thick. Since last Saturday the caldera has dropped 2 – 3 meters, meaning that current drop is now around 18,5 meters.
In the surveillance flight yesterday the ice-surface at Bárðarbunga was measured with the radar system of Isavia’s aircraft. The measurements show large changes on the ice-surface. Up to 15 m subsidence has occurred in the centre of the caldera, which corresponds to a volume change of 0.25 km3. The shape of the subsidence area is in accordance with the elevation of the caldera floor having lowered by that
amount.
o Subsidence of this order has not been observed in Iceland since
measurements of crustal movements started around the middle of last
century.
o No signs of eruption or increased geothermal activity in the Bárðarbunga
caldera are observed.
o The volume of the subsidence in Bárðarbunga is considerable portion of the
total volume of the magma dyke.
o The most probable explanation is that this subsidence is related to the recent
high seismic activity and subsurface magma flow to the northeast.
originally posted by: muzzy
hraun.vedur.is...
[Skjálftalisti]
Gogn ekki tiltaek
Data not available
WTFudge?
Mon, 09/08/2014 - 20:14 -- rosa
Inspection of rock samples from Holuhraun lava indicates that the erupted magma contains minor amount of plagioclase phenocrysts (