We Icelanders may have taken a Christmas break from our usual routines, but at the now-famous Bárðarbunga volcano it seems to be a case of ‘business as usual’ with another two 3+ tremors this morning.
The first hit at 2:32 this morning, followed by another at 4:51, and both measured 3.3 in magnitude. This is according to data from the Icelandic Met Office.
Seismic activity at Bárðarbunga has been on the rise since mid-September, likely indicating a build-up of magma in the caldera.
Most recent models suggest that the build-up phase could take some time and that an eruption is not imminent. The site is nevertheless now under day-and-night surveillance at the IMO.
Bárðarbunga is at the center of a 200 km (124 mi) long volcanic system, one of the largest on the planet. The 10 km (6,2 mi) wide caldera is located underneath a 600 to 850-meter (1,968 to 2,788 ft.) thick ice cap in Vatnajökull glacier.
The eruption was in an ice free zone about 41 km (25.5 mi) north of the caldera, and it left a new lava covering 85 square km (32.8 sq. mi). For scale, imagine an area roughly 1.5 times larger than Manhattan island covered with new 7 to 30 meters (21–90 feet) thick lava.
December 27, 2015. Bárðarbunga , Iceland :
Source : icelandmonitor.mbl.is
Photo : Árni Sæberg