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Bardarbunga

Question: 
Is the Iceland volcano is going to disrupt our upcoming (North Atlantic) cruise?
Answer: 
The news seems to be both good and bad. On the plus side, the Bardarbunga eruption is completely under the Vatnajokull Ice-cap so far. The ice is between 150 and 1000 m (500-3300') thick (though the volcano is near the edge of the cap). It seems that many of the historic eruptions from this volcano have stayed completely under the ice. If this one does too, there should be no issue for air travel.
 
On the negative side, Bardarbunga is a much bigger volcano than the one that caused so much disruption in 2010 (Eyjafjallajokull). Over the last few days there have been about 1000 earthquakes a day including a handful of magnitude 5 events (pretty big for a volcano) indicating that something significant is going on. Around 6,600 BC, Bardarbunga created the largest lava flow of any volcano in the last 12,000 years and in 1477 it erupted with the biggest explosivity index of any volcano in Iceland history (comparable to Krakatoa in 1883 and Pinatubo in 1991).
 
This history says that the Bardarbunga eruption could definitely break through the ice-cap, sending ash far and wide. Similar activity in 2010 closed airports all around the North Atlantic on and off for weeks. Unfortunately, Icelandic volcanoes often stay active for months or even years, so we will just have to keep an eye on the news and hope for the best.