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The additional input parameters required to execute the service are shown in Figure 3. Some of those parameters take numerical arguments, printed by the User, others take values selected from a list. In any case default values are provided. Advanced options are also available, however the service runs properly even if they are discarded. For detailed description of all service parameters please see at the trmloc manual at the document repository (link….)

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Figure 3.

Once the point picking in the waveforms and the parameter selection is over, the User shall click on "RUN" (green button, left bottom corner of Figure 3) to initiate the Source Localization process.

The results obtained after the process terminates include a variety of output values, files and figures (Figs …). Numerical outputs are the hypocenter coordinates obtained by different methods, their uncertainties and the original coordinates from the catalog, for comparison (Figure 4, top). These values are also plotted in charts, one showing the epicentral location (longitude-latitude) of the original and obtained solutions together with the stations positions (Figure 4, bottom), and one more showing the vertical (depth) distribution of the aforementioned solutions. Four ascii files are also created (log.txt, res.txt, xcp.txt, and out.txt), which contained detailed and specialized information on the process, the results and their uncertainties (see trmloc manual for details, at the document repository - link). These files can be either displayed in the screen or downloaded by Image Addedthe User.

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