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TitleShallow magmatic intrusion evolution below La Palma before and during the 2021 eruption
 
AuthorFernández, J; Escayo, J; Camacho, A G; Palano, M; Prieto, J F; Hu, Z; Samsonov, S VORCID logo; Tiampo, K F; Ancochea, E A
SourceScientific Reports vol. 12, issue 1, 20257, 2022 p. 1-18, https://doi.org/10.1038/s41598-022-23998-w Open Access logo Open Access
Image
Year2022
Alt SeriesNatural Resources Canada, Contribution Series 20220571
PublisherNature Research
Documentserial
Lang.English
Mediapaper; on-line; digital
File formatpdf
AreaLa Palma; Canary Islands; Spain
Lat/Long WENS -18.0333 -17.6500 28.8500 28.4000
SubjectsScience and Technology; volcanism
Illustrationslocation maps; photographs; charts; plots
ProgramCanada Centre for Remote Sensing People Support and Leadership
Released2022 12 12
AbstractLa Palma, Canary Islands, underwent volcanic unrest which culminated in its largest historical eruption. We study this unrest along 2021 using Interferometric Synthetic Aperture Radar (InSAR) and a new improved interpretation methodology, comparing achieved results with the crustal structure. We reproduce the final phase of La Palma volcanic unrest, highligthing a shallow magma accumulation which begins about 3.5 months before the eruption in a crustal volume charactherized by low density and fractured rocks. Our modeling, together with our improved pictures of the crustal structure, allows us to explain the location and characteristics of the eruption and to detect failed eruption paths. These can be used to explain post-eruptive phenomena and hazards to the local population, such as detected gases anomalies in La Bombilla and Puerto Naos. Our results have implications for understanding volcanic activity in the Canaries and volcano monitoring elsewhere, helping to support decision-making and providing significant insights into urban and infrastructure planning in volcanic areas.
Summary(Plain Language Summary, not published)
La Palma, Canary Islands, underwent volcanic unrest which culminated in its largest historical eruption. We study this unrest along 2021 using satellite data and a new improved interpretation methodology, comparing achieved results with the crustal structure. We reproduce the final phase of La Palma volcanic unrest, highligthing a shallow magma accumulation which begins about 3.5 months before the eruption in a crustal volume charactherized by low density and fractured rocks. Our modeling, together with our improved pictures of the crustal structure, allows us to explain the location and characteristics of the eruption and to detect failed eruption paths. These can be used to explain post-eruptive phenomena and hazards to the local population, such as detected gases anomalies in La Bombilla and Puerto Naos. Our results have implications for understanding volcanic activity in the Canaries and volcano monitoring elsewhere, helping to support decision-making and providing significant insights into urban and infrastructure planning in volcanic areas.
GEOSCAN ID331449

 
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