Parametric evolution of the total length of the strong-shear MPIL L_ss, as a function of the two thresholds and . The varies for each figure, with respective values of 0, 10, 25, 50, 75, and 150 G, from (A–F). For each panel, the L_ss quantity is represented for the strong arcade eruptive (SD E; solid lines) and strong arcade (SD; dashed lines) simulations. The threshold is changed for each curve, using the values of 30° (blue lines), 45° (red lines), and 60° (magenta lines). The eruption time is denoted by the vertical gray dot dashed line.