EDDA 2.0 is written in FORTRAN, which can be compiled by Intel FORTRAN Compilers. The source code is enclosed as supplement files. The main subroutine is “dfs.F90”, which contains the numerical solution algorithm for debris flow initiation from erosion and slope failures, and for solving the governing equations of the flowing mixture. An input file is needed (“edda_in.txt”) for inputting material properties, hydrological and rheological paramters and setting controlling options. As an in integrated program, EDDA 2.0 can be used to analyse regional slope failures, so the “edda_in.txt” file also includes the material properties and controlling options for slope stability analysis. Another input file (“outflow.txt”) is also required to define the outflow cell. Digital terrain data (e.g. surface elevation, slope gradient, erodible layer thickness) are included in separate ASCII grid files and enclosed in the data folder. Output files are stored in the results folder. Investigated variables at selected points are stored in “EDDALog.txt”
