SPECTACULAR VOLCANIC LAVA FISSURE ERUPTION IN ICELAND - (Read Description)

Описание: FISSURE ERUPTION DEFINITION:
A fissure vent, also known as a volcanic fissure, eruption fissure or simply a fissure, is a linear volcanic vent through which lava erupts, usually without any explosive activity. The vent is often a few meters wide and may be many kilometers long.

HOLUHRAUN FISSURE ERUPTION 2014-2015:
In the early hours of 29 August 2014, a small fissure eruption occurred in Holuhraun at the northern end of a magma intrusion which had moved progressively north, since 16 August, from the Bárðarbunga volcano. The progression of the magma intrusion was accompanied by an earthquake swarm. The eruption began just after midnight and stopped at 04:00 GMT. The active fissure was about 600 m in length.

Another fissure eruption started in Holuhraun at around 05:05 GMT on the morning of 31 August 2014, in the same rift as the eruption which had occurred two days earlier. The eruptive fissure was estimated to be 1.5 km long. By 4 September, the total area of the lava flow was estimated at 10.8 km2. Two new eruptive fissures formed south of the main eruption site, on 5 September. The new fissures were substantially smaller than the older fissure. By 7 September, the lava flow had extended 11 km to the north, and had reached the main western branch of the Jökulsá á Fjöllum river. The eruption showed no visible activity in the southern fissure, on the evening of 7 September. The lava flow is considered to be the largest in recent decades in Iceland and covered 44 km2 on 29 September. The volcanic eruption in Holuhraun continued with similar intensity as the previous few weeks. The lava field covered 63 km2 in late October. On 11 November, it was reported that the lava field extended to 70 km2 and more than 1 km3 in volume - the largest in Iceland since the Laki eruption of 1783.

The eruption ended on 27 February 2015. The Holuhraun lava field measures more than 85 km2 and the volume is around 1.6 km3