Fig. 5: Modeled pore pressure change.
From: Causal mechanism of injection-induced earthquakes through the Mw 5.5 Pohang earthquake case study
The pore pressure change (MPa) is shown in vertical cross-section (location shown in inset in Fig. 4b) through PX-1 and PX-2 on April 15, 2017 (upper row) and November 15, 2017 (lower row) when the Mw 3.2 and the Mw 5.5 earthquakes occurred, respectively. Left and right columns correspond to Cases A (core hydraulic diffusivity D = 1.0 × 10−6 m2 s−1 and damage zone D = 0.1 m2 s−1, small fault D = 1.0 m2 s−1) and Case B (same as Case A except without a fault core).
