A 2009 study found that the number of eruptions per year has gone up as the earth’s temperature has increased since the ice age. A 2014 study found that changes in the speed of the earth’s rotation, caused by factors including the gravitational pull of the sun and the moon, lead to periods of increased volcanic activity. There are theories that volcanic eruptions are on the rise. It is likely the impact on infrastructure and communities, as well as the dramatic photos, have brought more attention than usual to the world’s volcanic activity. “At any point in time there will typically be about 10-20 volcanoes in eruption around the world, we just don’t always hear about them.”
“All these volcanoes are frequently erupting, and their behaviour is totally normal. “The eruptions are not in any way connected,” explains Karen Fontijn, a volcanologist and postdoctoral researcher at Oxford University. You might be wondering, then, if these events are part of a trend we should be worried about. Indonesia’s Mount Merapi volcano has also been erupting since mid-May, most recently on June 1, sending plumes of smoke almost 4 miles into the air.
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