Data accompanying paper entitled "Do Normal Stress Vibrations Stabilize or Destabilize Faults? Experimental Perspectives”

The mechanical dataset includes processed data from four experiments conducted using a ring-shear hydrothermal deformation apparatus on simulated calcite or natural fault breccia-derived gouges. These experiments were performed under fixed effective normal stresses ranging from 50 to 180 MPa and fluid pressures between 3 and 50 MPa. The effective normal stress was systematically varied in different modes, amplitudes, and periods to investigate its influence on fault slip behavior.

For each individual experiment, the corresponding 'text' file—entitled "uxxxCal-yy-zz-pp" (where xxx is the experiment number, and yy, zz, and pp denote the effective normal stress, fluid pressure, and temperature, respectively)—contains a data table with the following 15 columns:
Time Normalload Pf T Displ LPv TauAB Taucorr Mu Mucorr h hlvdt Ec Vsam Vload
with the following 15 units:
s MPa MPa degreeC mm micron/s MPa MPa -- -- micron micron micron micron/s micron/s

The raw acoustic emission (AE) data are very large in size; therefore, we provide semi-raw AE datasets for two representative experiments (AE-u829 and AE-u828). Each of these folders contains two subdirectories: “output” and “reduceddata”. As their names suggest, these folders include both result figures (in .jpg) and reduced data files (in .mat format).

Mechanical results for the four experiments (in .jpg and .pdf) are provided in files named “Mecha-Results-uxxx”, where xxx denotes the experiment number.

Periodic analysis results for three experiments (in .jpg) are included in files named “Period-Results-uxxx”. These files contain not only result figures (in .jpg) but also the reduced data (in .mat) and the MATLAB code (in .m) used for processing and analysis.