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The only data required for Time Dependent Seismic Hazard (TDSH - selected area mode), application is a catalog containing seismic events ('_catalog.mat' is appended in the filenames contain such catalogs). The User goes to enters his/hers personal workspace and clicks on a seismic events catalog, that is already uploaded (see section ..... eg data handling"AH Episodes" chapter). For using a selected catalog for TDSH, the User shall click on the "Actions" tab and then select consecutively, "USE IN APPLICATION" and "Hazard in selected area", as shown highlighted in figure Figure 1.

Figure 1.

Once the service has been selected the User is requested to select options and fulfill some fields with parameter values needed for the TDSH analysis (see the following figuresFigures). These parameters are:

Using seismic catalog: A catalog has been already uploaded since the previous step, however, the User has the chance to select a different dataset, either from another episode or the any dataset after performing some processing/ filtering.

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Select Area: This is an interactive option providing to the User the possibility to select data, spatially constrained by a predefined shape (indicated by numbers 1-5 in figure Figure 2):

1) No draw option.

2) Draw a polygon.The User may select data into a polygon drawn after clicking in on different points of the map. To close the polygon, the User has to double click on the last point, such that this point will be connected with the first one.

3) Draw a rectangle. To select data into a rectangular the User has to click at on a point on of the map and move the cursor at to any direction. A second left mouse button click will restrict the selected area in at its current state.

4) Draw a circle (option demonstrated in figure Figure 2). To select data into a circular the User has to click at on a point on of the map and move the cursor at to any direction. A second left mouse button click will restrict the selected area in at its current state. Note that the first click on the map corresponds to the circle's center.

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The magnitude range (minimum and maximum magnitude assigned in the catalog) is shown in the screen (M range, Figure 3) for informative purposes. The rest of the input parameters are demonstrated in Figure 3:

Mmin: The User now is requested to chose the minimum magnitude (completeness level of the catalog). This can be done in two ways. The first is to type a single magnitude value in the empty box, possibly after he/she has performed an individual analysis (see MCE service). The second is to graphically select the minimum magnitude from the Normal or the Cumulative histograms, which are available after clicking on the respective tabs. In both cases there is option to alter the step of the histogram's bars and to select between linear and logarithmic scale of the Y-axis for the plotting.

Time range:The user may further filter the selected dataset by defining the starting and ending data of the period that he/she wishes to study. A calendar appears on the screen after clicking in the empty boxes next to "Start" and "End" fields (Figure 3). Note that this selection is optional. If no dates are entered, the entire dataset remains for the analysis. 

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Time window step (days): In this field the User selects the time window step, i.e. the number of days between the starting dates of subsequent datasets (see figure Figure 4 for details).

Magnitude: Magnitude for which the TDSH parameters will be calculated.

Method of creating windows: Two options are available at this field after clicking on the small arrow of the tab  (see "Time window Size" below for details).

Time window size: Size (span) of the windows containing data for the analysis. "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 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.

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• 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 (Figure 5). These outputs are available for the User for demonstration and plotting (when available).
• b-value and mean activity rate (Figure 6).Note that b-value is not plotted (and not estimated all) if a non-parametric approach is selected as "Magnitude distribution estimation method".
• mean Mean return period vs time (Figure 7).
• exceedance Exceedance probability vs time (Figure 8).

NOTE that figure have enabled the zoom option, the scatter/line.spline chart type and linear/logarithmic scale of the Y-axis option.

Figure 5.

Figure 6.

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