Fig. 2: Shear stress drop/relaxation during fluid pressurization.
From: Constraining maximum event magnitude during injection-triggered seismicity
a Shear stress drop vs. slip displacement for tests ZD1 and ZD2. Experiment ZD1 shows a constant slope during fluid pressurization, while ZD2 features slope changes for the 0.4, 0.7, and 0.9 MPa pressurization steps. Pressurization step at 0.9 MPa for ZD1 (b) and ZD2 (c) are shown for comparison.
