Fig. 3: P-wave tomography and reflection seismics.
From: Revised Minoan eruption volume as benchmark for large volcanic eruptions
a Seismic profile crossing the Santorini caldera through the northern breach into the northern basin, the western basin, and the south-western breach. The semi-transparent colours overlaid are from a 3D tomographic Vp model27. Dashed pink line marks the base of Unit 3, interpreted as the boundary between Minoan and post-Minoan deposits. Dotted purple line is the 3.2 km/s iso-velocity surface, interpreted as the boundary between brecciated and volcanoclastic caldera infill and denser basement. The seismic profile does not cross the centre of the low-Vp anomaly, which is located close to Nea Kameni, and thus does not show its full extent. b Enlargement showing the three post-Minoan units in the northern basin.
