Concerns raised over volcanic risks for proposed airport site in Hvassahraun, Iceland

Concerns have been raised about the potential for lava flows to affect the proposed airport site in Hvassahraun, located south of the Reykjanesbraut highway. A report by a task force on infrastructure was unveiled recently, but it faced significant delays, initially expected to be released by the end of 2022. Ultimately, the completion costs were under budget, coming in at around 170 million instead of the anticipated 200 million.

The analysis indicates that the proposed site is largely outside established volcanic systems, which theoretically minimizes the risk of lava flows. However, it notes that there are just under two kilometers from the southern part of the study area to the Krýsuvík volcanic system. In the event of an eruption there, lava could indeed reach the site.

Geologists have identified three potential volcanic eruption scenarios within the Krýsuvík system. The most likely outcome is a small eruption with limited impact, or a medium-sized eruption that could cover about half of the area with lava. The least likely scenario is a larger eruption that could potentially engulf the entire area under investigation.

Thorvaldur Thordarson, a professor of volcanology, highlighted that it is concerning how little is taken into account regarding the area’s volcanic activity. He emphasized the high likelihood of lava flow, especially considering the ongoing volcanic phase that Iceland is currently experiencing.

Questions remain about the feasibility of establishing an airport with protective barriers, especially given the risks posed by volcanic activity in close proximity. The potential for eruptions, gas emissions, and ash fall further complicates this consideration.