Supplementary material for “Regional controls on magma ascent and storage in volcanic arcs” Figure S1: Depths of magma storage in function of the convergence velocity (same legend as Figure 4). (a) At the 70 volcanoes individually, the volcanic regions being color-coded similarly to Figure 2. (b) Cumulative histograms of the proportion of shallow and deep reservoirs in function of ranges of convergence velocities. In this and in the following figures a horizontal orange boxes indicates a lack of a correlation whereas a non-horizontal box suggests the presence of a correlation. Figure S2: Same as Figure S1 but in function of the subduction velocity. 1 Figure S3: Same as Figure S1 but in function of the vertical descent velocity. Figure S4: Same as Figure S1 but in function of the slab age. Figure S5: Same as Figure S1 but in function of the slab dip angle. 2 Figure S6: Same as Figure S1 but in function of the current duration of the subduction. 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