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Method of creating windows: Two options are available at this field after clicking on the small arrow of the tab: "TIME" and "EVENTS". If "TIME" is selected, the given value corresponds to the duration of each dataset, in days. If "EVENTS" is selected instead, the given value corresponds to the number of events that each dataset contains (see figure 4 for details).
After selecting all the parameters needed the User may click on the run button (blue tab - figure 3), for the calculation process to be initiated.
Figure 4. The time window step is set to 5 days in both cases. Notice that the each starting date has 5 days difference from the previous one. Left frame: Parameters set are "Time window size" equal to 100 days and "Method of creating windows" selected to be "TIME". In this case the number of events differs in each dataset, but the time range (difference between ending and starting dates) is 100 days for all the datasets. Right frame: Parameters set are "Time window size" equal to 75 (events) and "Method of creating windows" selected to be "EVENTS". In this case the number of events the same in all dataset and equal to 100, but the time range (difference between ending and starting dates) is different for each dataset.
The results of the process include:
- Information on the time windows created (Figure 4), shown after clicking on the "Show details" tab.
- Numerical parameters resulted by the process, stored in the system (in the current folder) and available for the User for demonstration and plotting (when available).
- b-value and mean activity rate (figure 5).
- mean return period vs time (figure 6).
- exceedance probability vs time (figure 7).
NOTE that figure have enabled the zoom option, the scatter/line.spline chart type and linear/logarithmic Y-axis option.
Figure 5.
Figure 6.
Figure 7.
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