Page History

...

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 application 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.

Figure 2. Picking p-wave arrival times on the waveforms
 

In this application the User has to pick a single point in each waveform (Figure 2), instead of a phase (i.e. two points, starting and ending). For the waveform processing details see also "FOCI” and “Spectral Analysis” chapters. 

Parameters selected for the source localization:

...

Figure 4. Some of the applications outputs