Fig. 3: Models of the 79 CE magma reservoir in this work.
From: Magma reservoir growth and ground deformation preceding the 79 CE Plinian eruption of Vesuvius

Magma reservoir simulated by FEM in the viscoelastic medium. a Red, prolate spheroid; b Blue, sphere; c Green, oblate spheroid; details are reported in Table 2. The three sources have the same initial volume (1.1 km3, thin lines) and expand achieving the same final volume after 300-years recharge (4.4 km3, thick lines). The grey shaded area is the viscoelastic shell with lower viscosity with respect to the host rocks. d Comparison among the initial (thin lines) and final (thick lines) volumes. The shell boundary is reported with a thin black line. The topography from the central crater is reported on top (horizontal in scale, vertical not to scale).