‘Volcanic eruption risk low if sea levels high’

RISING sea levels caused by global warming could reduce the risk of eruptions on volcanic islands and coastal areas, according to research.

Researchers from the universities of Portsmouth and Oxford Brookes examined the timings of eruptions over hundreds of thousands of years on the Greek island of Santorini in relation to sea level changes.

They found that a 130ft fall in sea level was a ‘critical point’ beyond which eruptions were more likely.

The findings of the study, published in Nature Geoscience, have important implications for millions of people living on volcanic islands as climate change affects sea levels globally, they said.

Dr Mark Hardiman, of the University of Portsmouth, said: ‘With continuing global

warming, we need to urgently understand the relationships between the effects of climate change and the risk of natural hazard events.

‘One such hazard is volcanic eruptions on small islands and in coastal areas that are already strongly impacted by the consequences of rising sea level and increasing storm activity.’

Co-author Dr Sabine Wulf, of the University of Portsmouth, said: ‘If our findings could be confirmed by studies on other volcanic locations, continuing sea level rise would lower the risk of future volcanic eruptions at islands and coastal areas.

‘This would be good news for the population of Santorini, but also for other high-risk areas in the Mediterranean.’