A W A K E THE G I A N T

Katla Volcano

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Part II
Mýrdalsjökull, Iceland N63° 37' 41.151" W19° 5' 19.269"

Katla is a large volcano in southern Iceland. It is very active; twenty eruptions have been documented between 930 and 1918, at intervals of 20-90 years. It has not been erupted for 101 years, although there may have been an ice cover, including ones in 1955, 1999, and 2011.

Prior eruptions have had a scale of 0 to 8. In comparison, the Eyjafjallajökull 2010 eruption had a VEI of 4. Bigger VEI-5 eruptions are comparable to Mount Pinatubo's 1991 eruption, while significantly rarer VEI-6 eruptions would be comparable to Krakatoa's 1883 eruption.

Katla is the largest volcanic carbon dioxide (CO2) on Earth, accounting for 4% of total global volcanic carbon dioxide emissions.
/ Wikipedia /

Tremors were detected under Katla in late August 2016.

A "Specialist Description" describing the activity on 29 August 2016 noted that:

There was "a seismic swarm in Mýrdalsjökull on the 29th of August with two events in the northern Katla caldera rim measured at magnitude 4.5. These are the biggest earthquakes in Katla volcano since 1977. Earthquake eruption checks confirmed that most earthquakes occurred between 0:40 and 1:50 PM. The big earthquakes were about thirty seconds apart at 1:47. They were followed by more than 50 aftershocks until 15:12 PM, when there was an earthquake of magnitude 3.3 and then the cycle and seismic activity in the region reduced again. No unrest was measured along these earthquakes. The geothermal has decreased in the following week and is now negligible."

Update Written by a specialist at 11 Sep 16:38 GMT:

"Today, shortly before 14:00, a small earthquake swarm began in Mýrdalsjökull. The largest earthquakes of the swarm were of magnitude 3.3 and 3.0 at 16:12 and 15:57. More than 10 smaller earthquakes were detected in the swarm. All of the earthquakes were shallow and located in the caldera of Katla volcano. It is not unusual for seismic swarms of this type to occur in this area."

In February 2017, seismic activity at the volcano continued.

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A W A K E THE G I A N T -Katla Volcano — Part II

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