Fig. 3. Numerical model of the South Iceland Seismic Zone and the adjacent central volcanoes (stratovolcanoes). During loading of the Seismic Zone (through sinistral movement across the zone), the associated three volcanoes concentrate stresses (red contours) that, depending on whether the volcano located within an area of transpression or transtension, may suppress or trigger volcanic eruptions (cf. Gudmundsson and Brenner, 2003, cited).