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Now, all data needed is available for the TRMLOC application.

Figure 1.

The TRMLOC application can be selected from the seed file as shown in Figure 1b:

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Figure 1b. 

Once all these files are selected, a map appears on the screen showing the epicenter of the selected event (red circle) and the locations of the seismic stations comprising the regional network (green triangles), as demonstrated in figure 2. Information on the event and the stations appears on the screen, after clicking on the circle or the triangles, respectively. Moreover, the waveforms are also shown in the screen and are available for elaboration (see also Waveform viewer guide" in "Visualization" chapter). As depicted in Figure 2, only the vertical channels are shown by default, since the methodology applied in this service uses only P-waves. Nevertheless, the User can make all the channels appear on the window, by ticking the "E" and "N" components, next to the "Show channels" field, just below the map in Figure 2.

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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 the User.