Articles | Volume 25, issue 12
https://doi.org/10.5194/nhess-25-4815-2025
https://doi.org/10.5194/nhess-25-4815-2025
Research article
 | 
04 Dec 2025
Research article |  | 04 Dec 2025

Quantifying cascading impacts through road network analysis in an insular volcanic setting: the 2021 Tajogaite eruption of La Palma Island (Spain)

Lucia Dominguez, Sébastien Biass, Corine Frischknecht, Alana Weir, María-Paz Reyes-Hardy, Luigia Sara Di Maio, Nemesio Pérez, and Costanza Bonadonna

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Cited articles

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Biass, S., Reyes-Hardy, M. P., Gregg, C., Di Maio, L. S., Dominguez, L., Frischknecht, C., Bonadonna, C., and Perez, N.: The spatiotemporal evolution of compound impacts from lava flow and tephra fallout on buildings: lessons from the 2021 Tajogaite eruption (La Palma, Spain), Bull. Volcanol., 86, 1–24, https://doi.org/10.1007/s00445-023-01700-w, 2024. 
Blake, D. M.: Impacts of volcanic ash on surface transportation networks: considerations for Auckland City, New Zealand, https://doi.org/10.26021/7058, 2016. 
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This study assess the cascading impacts of the 2021 Tajogaite eruption on La Palma, Spain. By combining forensic techniques with network analysis, this research quantifies the effects of physical damage on the road network as well as the cascading loss of functionality and systemic disruptions to emergency services, health centers, agriculture and education. Result show the relevance of redundant infrastructure and landuse on effective risk management and mitigation of future volcanic impacts.
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