Step 3: Create SRFs for all realisations of the considered faults

NHM selection file

In order to run nhm2srf.py code to generate SRFs, a "selection file" is needed. This text file can be specified in multiple ways (depending on the approach utilized for considering uncertainty in ruptures). Here are the three approaches implemented as of Dec 2018:

1. Approach one: The number of realisations for a given fault is prescribed (as done in Step 2: Determine the number of simulation jobs for a given fault), and the hypocentre location is determine using MonteCarlo randomisation. One slip realisation is generated for a given hypocentre. The format of the input file will be:
    fault_name     num_realizations"r"   
   
   note: the "r" key letter is concatenated to the number of realizations. Here is an example for CS18.6: fault_selection_c18p6_for_SRF.txt
   
   
2. Approach two: specify the number of hypocenter along the strike and and the number of slip realisations for each hypocentre. The hypocentre is sampled along the strike at the constant depth of 0.6*(down_dip_width). The input file will have this format:
   fault_name     num_hypo_along_strike     num_slip_realizations_per_hyp
   
   
3. Approach: specify the distance interval between hypocentres along the strike and dip directions. The minimum number of realisations will be three along the strike located at the depth corresponding to 0.6*(down-dip-width). The inout file will have this format:
   fault_name     hypo_dist_along_strike     num_slip_realizations_per_hyp 
   
   

4. (note for approach 3: append "r" to the number of realizations (e.g., 30r) to generate randomized hypoceter with one slip distirbution per each)