by ClickGreen staff. Published Wed 05 Oct 2011
Iceland's massive volcano Katla appears on the brink of a major eruption just days after officials confirmed they had detected the start of eruptions over the summer.

Measuring devices this morning have picked up a large earthquake swarm, usually a tell-tale sign of a potential volcanic eruption.

The Icelandic Government last month announced it was increasing monitoring Katla, which is one of Europe's most feared volcanoes, following a consistent and strengthening spike of tremors and quakes.

And last week, officials at the Iceland Meteorological Office confirmed a series of smaller eruptions had occurred in July strengthening fears of an imminent, much larger, eruption.

Evidence gathered by geophysicists showed the magma had risen to the height of the glacier ice above the volcano causing it to melt.

They said the high seismic tremors recorded on July 8 and 9 confirmed Katla had become active and started small eruptions.

Today's intense swarm of earthquakes started at midnight and dozens of tremors have been recorded - the strongest with a magnitude of 4 at around 3am.

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