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Iceland issues Bardarbunga volcano red alert

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As most of you following this are already aware, there is some speculation that Barðarbunga's magma intrusion will reach the nearby Askja's magma system within a few days.

This has now happened. Whether it will actually lead to an eruption there or not, nobody knows, but Askja alert level has been raised to yellow now.

The dyke has now reached the fissure system of the Askja volcano and GPS measurements indicate that the area there is greatly affected.
 

Tawpgun

Member
Is it at risk of triggering a more explosive eruption?

Can't find that much info on it at the moment.

No. Most likely its just gonna effuse out. Don't know how long for though

EDIT: Activity is already decreasing. So signs point to not that big a deal. Don't expect any ash though.
 
Black line is the magma intrusion, the small blue line is the fissure, estimated at about 1km long now. Long how it will go on for or whether magma will erupt at other points above the intrusion, there is no way of knowing.

Good news at the moment is no disruption to air travel and no flooding since it's happening outside of the glacier.

BwMPDUxIEAElqJm.jpg


 
Amazing pictures, maquiladora.

There is growing speculation and concern about subsidence in the Bartharbunga caldera.

http://www.ruv.is/frett/gravely-concerned-about-bardarbunga

One Icelandic volcanologist speculates that it could create a very large explosive eruption and massive glacial flooding: http://www.jonfr.com/volcano/

Officially, a large eruption at the caldera is now 1 of the 3 most likely scenarios. The Iceland Met Office placed a GPS station on the glacier directly over the center of the caldera a couple of day ago. You can see the plot here, updates every 5 minutes.

http://brunnur.vedur.is/pub/bgo/figs/

This is already the greatest subsidence of a volcano ever measured in modern times in Iceland and it continues to drop. Nobody knows if it will stop or continue until a collapse, it could drop for several hundred meters before that happens, nobody really knows, there hasn't been a large eruption at Bardarbunga for over 500 years.
 

DrM

Redmond's Baby

Lava field size is now over 84 square kilometers. Icelandic Met Office reported that lava flow is estimated at 50-70 cubic meters per second and it is quite constant. Sulphuric dioxide levels are still very high. IMO is reporting three possible scenarios in their weekly report:
  • The eruption in Holuhraun continues until the subsidence of the Bardarbunga caldera stops. The eruption can still go on for many months.
  • The volcanic fissure may lengthen southwards under Dyngjujokull, resulting in a jokulhlaup* and an ash - producing eruption. It is also possible that eruptive fissures could develop in another location under the glacier. If such an eruption would be prolonged it could eventually produce a lava flow
  • Volcanic eruption in the Bardarbunga caldera. Such an eruption would melt large quantities of ice, leading to a major jokulhlaup*, accompanied by ash fall.
Other scenarios cannot be excluded.
* 'glacier outburst flood
 

cyberheater

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Officially, a large eruption at the caldera is now 1 of the 3 most likely scenarios. The Iceland Met Office placed a GPS station on the glacier directly over the center of the caldera a couple of day ago. You can see the plot here, updates every 5 minutes.

http://brunnur.vedur.is/pub/bgo/figs/

This is already the greatest subsidence of a volcano ever measured in modern times in Iceland and it continues to drop. Nobody knows if it will stop or continue until a collapse, it could drop for several hundred meters before that happens, nobody really knows, there hasn't been a large eruption at Bardarbunga for over 500 years.

Wow. I wasn't expecting to see something that big. Amazing.
 
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