Lava flow dynamics during the 2021 Cumbre Vieja eruption, La Palma, Spain

crossref(2022)

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摘要
<p>Over the three-month duration of the 2021 Cumbre Vieja eruption, lava flows covered an area of 1,241 ha. (12.41 km2) out of the total 8,790 ha (87.90 km2) impacted by the eruption overall. Consequently, lava is responsible for the destruction of a majority of the 3,000 buildings and large agricultural areas. At the beginning of the eruption, authorities used a model to forecast the inundation areas. We compare that preliminary forecast with those produced by other models, such as MOLASSES, Q-LAVHA, MrLavaLoba, VolcFlow, and others. The different forecasted flow fields are also compared with the evolution of the flow field as observed by satellite and aerial mapping. Where available, we anchor dynamic model predictions for observables such as flow velocity to local measurements obtained from velocimetry on UAV and ground-based videos of flowing lava. Lava properties used in the models are informed by petrological analysis of samples collected during the eruption.&#160;</p>
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