Katla is a volcano in Iceland. It is situated to the north of Vík í Mýrdal and to the east of the smaller glacier Eyjafjallajökull. Its peak reaches 1,512 metres (4,961 ft) in height and is partially covered by the Mýrdalsjökull glacier with an area of 595 km².
The crater of the volcano has a diameter of 10 km and the volcano normally erupts every 40–80 years. The last major eruption occurred in 1918, although there may have been a small eruption in 1955.[1] Since 930, 16 eruptions have been documented. The Eldgjá canyon is part of the same volcanic system.[2][3] It is thought that Katla is the source of the Vedde Ash (more than 6 to 7 cubic kilometers (1.4 to 1.7 cu mi) of tephra dated to 10,600 years BP)[1][4][5][6] found at a number of sites including Norway, Scotland and North Atlantic cores.
Before the Hringvegur (Iceland's Ring Road) was constructed, people feared traversing the plains in front of the volcano because of the frequent glacier outburst floods and the deep river crossings. Especially dangerous was the glacier outburst that followed the eruption of 1918. Katla has been showing signs of unrest since 1999 and geologists have concerns that it might erupt in the near future.[7] Particularly, monitoring has been intensified following the March 2010 eruption of the volcano beneath the Eyjafjallajökull glacier.[8] The eruption of this nearby long-dormant volcano in March and April 2010 prompted fears among some geophysicists that it might trigger an eruption at Katla.[9][10][11]
At the peak of the 1755 eruption the flood discharge has been estimated at 200,000–400,000 m³/s; for comparison, the combined average discharge of the Amazon,
Mississippi, Nile, and Yangtze rivers is about 266,000 m³/s.
My sister in law in stuck in Portugal at the moment - she was due back to Prestwick on Sunday. She flew out with Ryanair and she has been told no flights until later next week! THey are now looking at hiring a car and driving, but we have pointed out that it will be unlikely they can get a ferry/Eurostar anytime soon either, so they are a bit stuffed.
