This dataset contains the MATLAB code “Induced Fault Slip (IFS)” version 2.0 to simulate the depletion-induced growth of slip patches in an inclined displaced fault with constant or slip-weakening friction. It employs a semi-analytical approach with the aid of expansions in Chebyshev polynomials and Gauss-Chebyshev quadrature. It has been used to produce most figures in the following two publications:
[1] Jansen, J.D. and Meulenbroek, B.J., 2025: The onset of depletion-induced seismicity in slip-weakening faults with interacting peaked shear stresses: Uenishi and Rice extended. Submitted to Journal of Geophysical Research – Solid Earth.
[2] Meulenbroek, B.J. and Jansen, J.D., 2024: The use of Cauchy-type singular integrals over neighboring intervals to compute induced slip in displaced faults. International Journal of Solids and Structures 300, 112922. https://doi.org/10.1016/j.ijsolstr.2024.112922
The files have been prepared for MATLAB R2021b.
The collection of Matlab files contains three main files: ifs.main.m, ifs_main_UandR.m, and ifs_main_nucleation.m. Main file ifs_main.m is the most important file which drives most of the computations and produces most of the figures. The other two main files are dedicated files to produce Figures 6 and 8 of reference [1].
Within ifs_main.m, there is an option to select three input files:
% 01 = Example – This file creates Figure 4 for reference [1] and most of the plots for reference [2].
% 02 = Depletion in a reservoir with a symmetric displaced vertical fault – This file creates plots that are not used in publications.
% 04 = Example with small and large relative fault throws - This file creates several plots for reference [1].
The fourth input file (% 06 = Nucleation as function of fault throw) is only relevant for main file ifs_main_nucleation.m to create Figure 8 for reference [1].
Main file ifs_main_nucleation.m has an option to produce new results (time consuming – 1 to 2 hours) or to recreate results from data stored in directory “IFS output files” (see the setting of parameter flag_from_file).
To run these files, make sure to first change the path in admin.path_out (see line 32 in ifs_main.m, and line 50 in ifs_main_nucleation.m).