Iceland’s Bardarbunga Volcano: 5.5 Magnitude Earthquake Strikes as Frequency of Tremors ‘Increases’


Lava from the Bardarbunga volcano is estimated to be flowing at a rate of about 1,000 cubic metres per second.  (Reuters)

(SOURCE)  Iceland’s largest volcanic system has been struck by a magnitude 5.5 earthquake overnight, one of the largest tremors since seismic activity started, according to the country’s Meteorological Office.

The earthquake shook the northern rim of the Bardarbunga caldera shortly after 3am local time.

According to the Met Office, the tremors appear to be becoming more frequent. In the past few days, volcanic activity has increased dramatically, with the lava now covering an area of more than four square kilometres.

Three other tremors of magnitudes higher than 4.0 have occurred in the past 24 hours, the Iceland Review reports.

Overall, around 500 earthquakes were recorded around Bardarbunga yesterday, with most minor tremors by the Dyngjujökull glacier.

Volcanologists have expressed concern that the fissure, which appeared in a lava field near the Vatnajokull glacier and expands to the north, may spread south.

If it reaches below the glacier, along with the magnitude 5 tremors, it could case a violent eruption. The melting of the ice could cause flooding and major explosions.

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