A possible eruption has begun at Grimsvotn volcano, Iceland. A flood has started in Gigja in south-east Iceland. The disturbance occurred under the Vatnajokull glacier near Grimsvotn Volcano on Sunday afternoon. There was an increase in flow of water by 30 cm but other rivers running from the glacier are dry. The flood may take 4-5 days to reach maximum. On Sunday the volume of water in Gigja was 130 cubic metres per second, and electrolyte levels double that of normal. Grimsvotn is the most active volcano in Iceland.
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