Worldwide Volcanic Activity On The Rise

Worldwide volcanic activity on the rise (Ice Age Now, Oct 11,  2014):

Chart shows volcanic activity during last 400 years.

Volcano-eruption-history-1600-to-present

If underwater volcanic eruptions were included, I think the trend lines would burst explosively through the top of the chart.

I don’t know who created the chart, but would like to give them credit if anyone has the answer.

http://twoicefloes.com/forums/topic/volcanoes/#post-9582

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