Iceland's largest volcano hit by earthquakes

Iceland just raised the alarm after its largest volcano was hit by the biggest tremors since 1977. Katla – named after the word ketill ('kettle') after the shape of the volcano - is located in southern Iceland about 140 kilometers from its capital Reykjavik.
Two M4+ quakes rattled the crater of Katla on Monday, August 29, 2016. That was followed by a swarm of at least 10 more tremors at the volcano, which rises 1,450 meters into Iceland's chilly air. These are the largest temblors to occur to Katla since 1977.

The good news is that the Icelandic Meteorological Office is reporting that – so far at least - no tremor is currently recorded at Katla itself, which suggests that at least for the moment, no magma is making its way to the surface. Geologist Gunnar B. Guðmundsson said that while the tremors are quite large, there are as yet no signs that Katla is erupting. Scientists are however continuing to monitor the volcano.
Katla is one of Iceland’s more powerful volcanoes, and although it does not erupt very often on a human scale, geologically speaking it is considered very active. The volcano has erupted about 20 times since Iceland’s founding, although the last major eruption was in 1918. Historically, the feared Eyjafjallajokull has been known to erupt one to two years prior to Katla. Katla last erupted in 1955 and 1999. However, neither of those were large enough to break the ice covering its 10 kilometer-wide caldera. Its last major eruption was back in 1918, when it spewed ash for more than five weeks.

The lack of any harmonic tremor means that the likelihood of an imminent eruption is still low.

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