IMO Update: 14 November 2014 12:00 - from the Scientific Advisory Board The volcanic eruption in Holuhraun continues with similar intensity as it has for the last two weeks. Lava continues to flow out of the lava lake in the crater to east southeast. Emission of sulphur dioxide from the crater appears to be constant. Seismic activity in Bárðarbunga continues to be strong but the number of earthquakes stronger then M5.0 seems to be decreasing. The subsidence of the Bárðarbunga caldera continues with similar rate as in the last few weeks although the rate of the subsidence appears to be slower. GPS measurements outside Bárðarbunga show that the horizontal displacement is slowing down. Notes from the meeting of the Scientific Advisory Board (pdf 0,4 Mb). 14 November 2014 10:00 - from geoscientist on duty No significant changes were observed regarding the seismic activity around Bárðarbunga and in the dyke intrusion since the last report, yesterday morning. The strongest earthquakes around the Bárðarbunga caldera were recorded last night, M4.9 at 20:46 on the northwestern caldera rim and M4.8 at 23:08 on the northern rim. Eight additional events were larger than M4 and 21 in the range M3.0-3.9. Alltogether around 70 events were detected around the caldera. Activity in the dyke intrusion is low. None of the approximately 15 detected earthquakes exceeded M1.5, most of them were located in the northern part of the dyke and a few further south under Dyngjujökull. Minor activity has been detected around Herðubreið and east of Askja. The eruption in Holuhraun continues at stable levels. Camera observations are limited due to weather, but were occassionally possible yesterday late afternoon. No changes were seen on the camera or reported by scientists in the field.
Posted on: Fri, 14 Nov 2014 19:41:21 +0000
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