Fig. 5
From: The effect of giant lateral collapses on magma pathways and the location of volcanism
Model results for progressive refilling of the collapse scar. a Simulated trajectories for loading steps 0, 3 and 6, for the post-collapse regrowth scenario. Here, we used EVL2 = 0.4 with quadratic unloading (scenario b in Fig. 4). Red paths represent dykes that cannot reach the upper boundary of the model (the base of the volcano). b The y axis represents the eastward distance d from the Pico do Fogo stratocone, while the increasing loading steps correspond to the progressive refilling of the collapse scar. Loading steps 0, 3 and 6 are shown in a1–a3. Grey dots mark the average distance d from the Pico do Fogo stratocone at which eastward-propagating dykes reach the base of the volcano, and black dots correspond to the closest dyke arrivals with respect to Pico do Fogo. In c, the eastward distance d from the Pico do Fogo stratocone at which our dyke model predicts volcanism is colour coded as a function of the EVL magnitude vs. unloading type: 1 – linear, 2 – quadratic and 3 – cubic. Each circle represents a scenario for which we simulated the propagation of 16 dyke intrusions. The dashed lines mark the contours for which d = −1, 0 and 1 km. The relative magnitudes of unloading vs. loading forces, for each stress scenario, are listed in Supplementary Table 1
