Bárdarbunga volcano news & activity updates
Bardarbunga volcano update: Eruption update, record subsidence detected in Bárdarbunga caldera
Сб, 6 сен 2014, 16:0716:07 PM | ПЇЅПЇЅПЇЅПЇЅПЇЅ: T
Updated map of the lava flows from the eruptive fissure and location of the new fissure that opened yesterday (triangle) (IMO)
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.
Earthquakes around Bárdarbunga today so far (IMO)
Record subsidence in Bárðarbunga caldera
The ice-covered caldera of Bárðarbunga volcano has subsided by as much as 15 meters, an aerial radar survey of the ice surface yesterday showed. This is the largest ever measured subsidence in Iceland since precise deformation measurements have been done (approx. 60 years)!
The volume of subsidence in the caldera corresponds to a volume change of 0.25 km3. This volume likely corresponds to magma that has drained into the intrusion & erupting dyke to the NE.
There are no signs of eruption or increased geothermal activity in the Bárðarbunga caldera at the moment, but an eruption at the caldera can not be excluded as possible scenario for the near future.
Depressions in Dyngujökull glacier
In the surveillance flight yesterday a shallow, wide depression was observed on the surface of Dyngujökull, 10 km from the glacier edge. Another depression 6 km from the Dyngjujökull ice edge, which has been monitored over the last few days has deepened and is now 35 m deep.
It is likely that these depressions are sings of small and short sub glacial eruptions.
Seismic activity decreases
Seismic activity has decreased since yesterday. Approximately 90 earthquakes have been detected since midnight. One earthquake, of magnitude 5 was located in the Bárðarbunga caldera at 05:40 UTC. 14 earthquakes of magnitudes greater than 5 have been located since 16 of August.
Deformation changes since yesterday, measured with GPS north of Vatnajökull are small.
Fri, 5 Sep 2014, 22:37
Eruptive activity remains strong at the main fissure. A subglacial eruption is becoming more and more likely. ... читать все
Fri, 5 Sep 2014, 20:26
Iceland's Met Office (IMO) confirmed the 2 new eruptive fissures that opened earlier today south of the previous eruption site in Holuhraun, in a graben, that had formed above the intrusion, about 2km away from Dyngjujökull. ... читать все
Fri, 5 Sep 2014, 10:06
2 new eruptive fissures have opened south of the existing one and feed additional lava flows. They are located approx. 1.5 km south of the fissure from last Sunday and only 2 km north of the glacier rim. ... читать все
Fri, 5 Sep 2014, 08:20
The eruption continues with little changes. ... читать все
Thu, 4 Sep 2014, 13:47
The intensity of the ongoing eruption in Holuhraun is not declining, the Icleandic Met Office reports in the latest status update: ... читать все