Geomorphic analysis of digital elevation model generated from vintage aerial photographs: A glance at the pre-urbanization morphology of the active Campi Flegrei caldera

Natale, Jacopo; Vitale, Stefano; Repola, Leopoldo; Monti, Lucia; Isaia, Roberto

doi:10.1016/j.geomorph.2024.109267

Cited by 3 publications

(1 citation statement)

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“…Overall, only the deepest offshore seismicity, between 3 and 4 km depth, appears to fit and approximate the downward propagation of the south-western inner ring fault (Figures 4a Figure 4. Simplified structural map showing the relationship between the epicentral distribution of relocated seismicity in the 2022-2024 period with the elliptical pattern and the main volcano-tectonic structures recognized on-land (Natale, Vitale, Repola, et al, 2024), and in the offshore (Natale, Camanni, et al, 2022). Focal mechanisms solutions for selected 2023 Md > 3 events are shown (details in Figure S3 of Supporting Information S1), with their color coded by depth.…”

Section: Discussionmentioning

confidence: 99%

Delineation and Fine‐Scale Structure of Fault Zones Activated During the 2014–2024 Unrest at the Campi Flegrei Caldera (Southern Italy) From High‐Precision Earthquake Locations

Scotto di Uccio,

Lomax,

Natale

et al. 2024

Geophysical Research Letters

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In the past two decades, the central portion of Campi Flegrei caldera has experienced ground uplift up to 15 mm/month, with an increase of rate, magnitude and extent of the seismicity. In this work, we perform multi‐scale precise earthquake relocation of the 2014–2024 seismicity, mapping in detail activated fault zones. We relate the geometry, extent, and depth of these zones with up‐to‐date structural reconstructions of the caldera. The current seismicity is mainly driven by ground‐uplift‐induced stress concentration on pre‐existing, weaker fault zones, some of which identified for the first time. These structures are not only related to the inner caldera and dome resurgence but also to volcano‐tectonic events of the last 10 ka. The extent of imaged fault segments suggests they can accommodate ruptures up to a moment magnitude 5.1, significantly increasing seismic hazard in the area.

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Section: Discussionmentioning

confidence: 99%