New Zealand scientists are using insights from the 2021 La Palma volcanic eruption to better understand potential volcanic risks in Auckland, according to research released Thursday.
Dr Geoff Kilgour from GNS Science, who recently visited the Canary Islands, has warned that Auckland can expect slow-moving lava flows potentially extending several kilometres from a volcanic vent. The La Palma eruption, which lasted 85 days, released over 160 million cubic metres of lava.
“There are very few lava-producing eruptions that have occurred in built-up areas like Auckland, which is why La Palma is such a good example of how lava interacts with buildings and infrastructure,” Kilgour said. The research highlights significant challenges, including lava-ignited fires and extensive property damage.
Key findings revealed that satellite imagery alone is insufficient for assessing volcanic destruction. Ground-level analysis is critical for understanding nuanced damage and supporting recovery efforts. In La Palma, initial damage estimates of$1.5 billion are now being refined through detailed ground investigations.
Dr Jo Horrocks from the Natural Hazards Commission (NHC) said the research trip aims to better understand how lava flows could impact homes and infrastructure. “It will help us understand how to better assess damage post-eruption, and inform scenario planning and modelling of future damages,” said Horrocks, noting the findings will be useful for emergency planners and councils.
While acknowledging the low likelihood of a major eruption – with the last volcanic damage claim dating back to 1996 – experts stress the potential for impact. Auckland’s timber-frame buildings could be particularly vulnerable to lava-related fires.
The research also uncovered innovative engineering solutions, including adapting ancient Roman road-building techniques using heat-resistant limestone.
Kilgour recommends that residents focus on preparedness: maintaining an emergency go-bag, storing backup food and water, and knowing local emergency management contacts.
Do you have something to say about this story? Let us know in the comments below.