Fig. 4: Testing supershear continuity and triggering potential.
From: Seismic gap breached by the 2025 Mw 7.7 Mandalay (Myanmar) earthquake
a, Sketch of historical earthquake ruptures7, with black stars denoting their hypocentre locations6,7, and the Meiktila seismic gap on the Sagaing Fault. The yellow star marks the hypocentre of the 2025 Mw 7.7 Mandalay earthquake, and black dashed lines delineate the corresponding rupture zones. The fault is exaggerated in width for visual clarity. Dashed arrows indicate the fault extent shown in b and c, and the orange-shaded box highlights the stress barrier. b, Relative prestress ratio R of the fault model, modified from the preferred scenario by progressively reducing prestress and expanding the low-stress zone to simulate varying stress barrier strengths (bounded by black dashed lines) at the southern edge of the seismic gap. c, Final fault slip for each stress barrier (SB) scenario. Black contours mark rupture fronts at 3-s intervals. The corresponding moment magnitude is shown to the right in each panel.
