& Höskuldsson, 2008; Thordarson & Larsen,
2007). Highly active volcanic systems as Hekla, Katla, Bárðarbunga and Grímsvötn, have
explosive eruptions rates of 82%, 97%, 90% and 95%, respectively (Gudmundsson & Larsen,
2016; Larsen & Gudmundsson, 2016b, 2016a; Larsen & Thordarson,
2016). Volcanic eruptions
are quite common in Iceland and occur on average every two to five years (Larsen & Eiríksson
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