Fig. 7: Results of the numerical simulation of the 10 February 2022 PDC.
From: Trigger mechanism and propagation dynamics of pyroclastic density currents at basaltic volcanoes
a Simulated PDC computed by using as input parameters µ = 0.20, ξ = 300 m/s2 and u0 = 0 m/s (J = 0.375). b Simulated PDC computed by using as input parameters µ = 0.33, ξ = 741 m/s2 and u0 = 0 m/s (J = 0.271). c Simulated PDC (best fit) computed by using as input parameters µ = 0.33, ξ = 741 m/s2 and u0 = 80 m/s (J = 0.691). The total time for all simulations has been fixed at 240 s: the simulated deposit in (a) was reproduced within the total simulation time, while the best fit simulation (c) required only 50 s to fit the actual deposit, and then its motion ended, consistent with the observation from the thermal camera. The black line represents the area covered by the observed PDC deposit.
