A volcanic eruption occurred between Hagafell and Stóra Skógfell in Iceland on Saturday evening. According to Iceland’s Meteorological Institute, the lava flowed rapidly in two directions, partly south towards Grindavik and the power plant Svartsengi, partly west. The lava has now reached the protective dikes built in the area.
– The dikes have been very successful. At the same time, the eruption has weakened and the lava flows have stopped somewhat. Now only one or two craters are active, says Björn Lund.
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Getting awkward
The question is whether the lava will reach the lines from the Svartsengi power plant and Iceland’s southern road network.
– The lava is now about 200 meters from the lines and 900 meters from the road. It is somewhat unclear how much power is left in the eruption.
The line from Svartsengi supplies the Reykjanes peninsula with district heating and hot water.
– If it breaks, it will be difficult. Should the lava reach the road, Grindavik will be closed off from one side and then there will only be a smaller road left, says Björn Lund.
Emergency vehicles stationed on a road between Hagafell and Stóra Skógfell. Photo: TT
Explosions and hydrochloric acid
He also sees risks with the sulfur dioxide that comes up with the lava. You can ingest harmful amounts, depending on how the winds blow.
– You keep a close eye on which way the wind blows to see if the gases are carried towards built-up areas.
Another risk is that the lava reaches the sea and simply explodes.
– The lava is roughly 1200 degrees hot, so the water evaporates immediately. Then you get explosions and hydrochloric acid is also formed. It’s not good at all to be around, should that happen.
Although the outbreak has decreased in strength, it is likely that there will be new outbreaks in the future.
– They can continue for weeks, months or years. Larger eruptions can also occur if the center of volcanic activity moves to another area. But such a movement takes time. Activity will probably remain in the same area for the next few years.
In the clip, Björn Lund explains what the lava can do.