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Iceland's Bardarbunga volcano Orange Alert


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Intense earthquake swarm for a couple of days, harmonic tremor has started. This is under Vatnajokull glacier so eruption would cause a Jokalhaup flood, and would initially be explosive.

http://en.vedur.is/about-imo/news/nr/2938

Seismic activity at Bárðarbunga persists

18.8.2014

The intense seismic activity that started on 16 of August at Bárðarbunga persists. Very strong indications of ongoing magma movement, in connection with dyke intrusion, is corroborated by GPS measurements. There are currently two swarms: one to the E of Bárðarbunga caldera and one at the edge of Dyngjujökull just E of Kistufell. At 2.37 am on the 18th a strong earthquake (M4) was located in the Kistufell swarm.

This is the strongest earthquake measured in the region since 1996. As evidence of magma movement shallower than 10 km implies increased potential of a volcanic eruption, the Bárðarbunga aviation color code has been changed to orange. Presently there are no signs of eruption, but it cannot be excluded that the current activity will result in an explosive subglacial eruption, leading to an outburst flood (jökulhlaup) and ash emission. The situation is monitored closely.

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http://www.volcanodiscovery.com/bardabunga.html

 

"Bárdarbunga, a large central volcano, had its last major eruption in 1477 when it produced a large ash and pumice fall-out deposit. It also produced the largest known lava flow during the past 10,000 years on earth (more than 21 cubic kilometers of volume"

 

List of eruption below notice that it usually has frequent smaller eruptions but has been quiet for a extended period of time longer in fact than in the last 300-400 years not that that implies this one will be a bigger one but it is interesting to note

 

1159(?), ca. 1210, ca. 1270, ca. 1350, ca. 1410(?), 1477 (very large effusive-explosive eruption), 1697, 1702, 1706, 1712, 1716, 1717, 1720, 1726, 1729, 1739, 1750, 1766, 1769, 1797, 1807(?), 1862-64, 1872(?), 1902-03

 

New webcam watching the area

 

http://vedur2.mogt.is/grimsfjall/webcam/

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Upgraded to Red alert

 

 

The eruption has started today under the Vatnajökull glacier, the Icelandic Met Office wrote in a brief update. An reconnaissance flight by the Icelandic Coast Guard detected an ongoing lava eruption under the Dyngjujökull glacier using radar data. 

So far, the eruption seems to be small and has not breached the glacier's 150-400 m thick ice. No signs were seen at its surface during the flight. 

The aviation color code for the Bárðarbunga volcano has been raised to red.

Some minutes ago (14:04 local time), one of the largest quakes, estimated magnitude 4.5 occurred. 

More information is expected to be published later today.

 

 

http://www.volcanodiscovery.com/bardarbunga/news/47027/Brdarbunga-volcano-update-Eruption-has-started-under-ice-cap.html

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UPDATE: 

 

 

  • Warning
    Presently there are no signs of ongoing volcanic activity. The aviation color code for the Bárðarbunga volcano remains red as an imminent eruption can not be excluded.

RED: Eruption is imminent or in progress - significant emission of ash into atmosphere likely.

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Not sure if anybody has brought this up yet. According to the NHC projected track of Cristobal, I'd imagine we could be looking at a pretty nasty cocktail from mother nature if the two events coincide.

 

The 1991 Pinatubo eruption was largely obscured by a TC.

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