ArticleScientific reports2026
Magma storage depths and crustal-upper mantle structure of Campi Flegrei caldera (Southern Italy) unveiled through receiver functions analysis.
Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Campi Flegrei is an active caldera in Southern Italy and one of the most hazardous volcanoes in the world. Here, we provide the first comprehensive 3D geophysical image of its plumbing system down to 50 km using the seismic receiver function technique. We imaged major crustal and upper mantle structures and located seismic discontinuities, identifying two significant low-velocity zones. A shallow LVZ, in the eastern part of Campi Flegrei caldera at 10 km of depth, has a vertical prolate ellipsoid shape (6 × 5 × 4 km), suggesting a localized crustal magma transfer or intrusion zone. A deeper northward-dipping LVZ is 17 km thick, extending from 16 to 33 km depth and containing up to 30 wt% melt, indicating a subcrustal primitive magma source. These findings agree with previous petrological studies and enhance our understanding of the Campi Flegrei magmatic system, its ongoing activity, unrest, and associated hazards.
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