Output sheet

Having concluded the numerical processing of the model SHAKYGROUND should now what kind of output you would like to have. If you do not touch the “Output” sheet SHAKYGROUND provides you a standard output in graphical whose numerical contents may be saved to the model data base. This standard output concerns the average signal parameters, the average response spectrum plus their statistical fluctuation expressed by the standard deviations and peak hold values. You may also wish to access the results of single simulations. For this purpose click the sheet named “Output” to see a sheet as depicted in Fig. 13. SHAKYGROUND offers an option to scroll over all simulated seismograms and response spectra at the end of model processing.
Click the small white flip-flop boxes to activate or disactivate the salvation of time series and reponse-spectra. All files will be written to the subdirectory “Elaboration”. If you decided to write the single times series to disk SHAKYGROUND creates plain ASCII files with the single traces in terms of acceleration, velocity, displacement, and WOOD-ANDERSON response. The files are assigned names with respect to their type and an ID indicating the simulation during which the trace has been created. The accelerogram generated during the 36th simulation is written to the file named “acc.036”, the corresponding velocity and displacement seismograms are saved in files named “vel.036” and “disp.036”, finally the corresponding WOOD-ANDERSON seismogram is found in the file “wa_sim.036”. Similarly, if you decided to save the single response spectra by clicking the corresponding flip-flop box SHAKYGROUND creates plain ASCII files containing the single response spectra. The file names are created as before. For instance, the 36th response spectrum is saved to a file named “rsp.036”. Since all files contain solely one column with the values it becomes very easy to export them to any other program and to perform further processing if desired. SHAKYGROUND itself allows to visualize them graphically (we shall return to this point when we explain how to launch SHAKYGROUND). Note that the necessary information for this visualization is stored in two header files, i. e. S_Info (for the seismograms) and R_info (for the response-spectra).

Out Sheet –  Specifying the Results you wish to have from SHAKYGROUND.

If you wish to conserve these files please copy them to a separate subdirectory IMMEDIATELY after processing. Otherwise you will loose them because SHAKYGROUND cancels all files on its working directory “Elaboration” every time you’re starting a simulation. We have adopted this rather cruel method in order to prevent users from creating unconsciously chaos on the “Elaboration” directory and to avoid the accumulation of mega- and gigabytes of garbage.