Bárdarbunga volcano news & activity updates
Bardarbunga volcano update: Eruption continues with little changes
Wednesday Sep 10, 2014 15:51 PM | BY: T
No significant changes have occurred. The eruptive activity at Holuhraun continues at similar levels as during the previous days. Lava fountains were strong from the central vents on the main fissure this morning.
Adapted from IMO's latest status report:
Lava flows continue to travel east and north, where lava is flowing in the river bed of Jökulsá á Fjöllum. No explosive activity due to the lava and river water interaction has been observed, but steam rises from the lava.
The eruption is producing significant amounts of SO2 gas, dangerous for people if caught in the plume near the eruption site. Smell of sulfur has been reported as far as Norway.
Earthquake activity has continued to slow down. Only around 80 earthquakes have been recorded during the first half of the day. The largest two earthquakes, M 5.5 and M 4.9 occurred on the northern rim of Bárðarbunga caldera. Low frequency tremor is similar to what has been observed in the last few days.
GPS observations show insignificant crustal movements supporting the assumption that the amount of magma flowing into the dyke continues to be similar to the magma erupted to the surface.
Three scenarios are still considered most likely:
1 Subsidence of the Bárðarbunga caldera stops and the eruption on Holuhraun declines gradually.
2 Large-scale subsidence of the caldera occurs, prolonging or strengthening the eruption on Holuhraun. In this situation, it is likely that the eruptive fissure would lengthen southwards under Dyngjujökull, resulting in a jökulhlaup and an ash-producing eruption. It is also possible that eruptive fissures could develop in another location under the glacier.
3 Large-scale subsidence of the caldera occurs, causing an eruption at the edge of the caldera. Such an eruption would melt large quantities of ice, leading to a major jökulhlaup.
Other scenarios cannot be excluded
Tuesday, Sep 09, 2014
The fissure eruption at Holuhraun continues, although it appears that only the main fissure is still producing lava fountains and flows, while the smaller fissures south of it became inactive and only emitted steam yesterday. ... [more]
Sunday, Sep 07, 2014
The eruptive activity at Holuhraun has not decreased, the Icelandic Met Ofccie writes: "Magma flow is between 100 and 200 m3/s. The lava advances by about 1 km/day and its area yesterday afternoon was around 16 km2. ... [more]
Sunday, Sep 07, 2014
The eruption continues at similar levels as during the previous days. At the eruptive fissures, most lava emission in the form of lava fountains is now concentrated from the central vent on the main fissure. ... [more]
Saturday, Sep 06, 2014
Eruptive activity at Holuhraun is the same as yesterday. Two eruptive fissures are active, with most activity continuing at the same fissure that opened up a week ago. In addition, the fissure that opened yesterday morning is still active. The lava now extends 10 km ENE and has just under one km to reach Jökulsá á Fjöllum river. ... [more]
Friday, Sep 05, 2014
Eruptive activity remains strong at the main fissure. A subglacial eruption is becoming more and more likely. ... [more]