Bardarbunga volcano update: Eruption update
Mo, 1. Sep 2014, 22:2022:20 PM | VON: T
Aerial view of the eruption on 1 Sep (Icelandic Coast Guard)
The Icelandic Coast Guard made an aerial survey of the eruption site. According to IMO, the fissure is 1.5 km long, but only erupts from a 600-800 m long central section.
SO2 plume from the eruption (NOAA)
A single crater has been active at its southern end, but little or no lava extrudes from it now. Lava fountains rise to a height of a few tens of meters where the activity is greatest, centrally on the fissure.
The lava flow field stretches 3,5 km from the center of the fissure and is max 1,6 km wide, with a 500 m wide flow front. So far, approx 4.5 square km have been covered by the lava flows. The University of Iceland published an updated map.
At 16:00, a rough estimate gave a total volume of 20-30 million cubic meters of lava erupted so far, meaning that 5-10 million cubic meters had been added in 18-19 hours. Therefore, the average flow is now of the order of degree 100 m3/s.
The two small ice cauldrons in Dyngjujökull, aligned in the direction of the fissure, seemed unchanged since Friday 29 August.
Radar revealed no changes in Bárðarbunga nor in the depressions to the southeast of it.
Gas from the eruption
A significant amount of sulphur dioxide (SO2) is being released into the atmosphere. It is estimated at approx. 20,000 tonnes/day.
Mo, 1. Sep 2014, 17:38
The fissure eruption on Holuhraun continues with no signs of weakening. Icelandic press now counts as a relatively large effusive eruption, comparable to the Krafla fissure eruptions in 1980-1984. ... Read all