Page History

The User may have access to special visualization services as shown in Figure 1. The screen appears after clicking on "Services" tab at the home page and the selecting "Visualization" (options in the red boxes, Figure 1). A list of visualization services is shown, with a brief description appended and option to add the service in the workspace (clicking "Add to workspace" tabs, idicated by on the blue boxes in Figure 1). Clicking anywhere into the area constrained by the green frame in Figure 1, would show an overview of the service with additional information, such as input files, references, affiliation, output results etc.

Image Removed

Figure 1.

• Front Advance Histograms Visualizations: This is a service dedicated to mining induced Episodes and is directly connected with the Time Dependent Seismic Hazard Service. It provides histograms of seismic events and seismic energy release for constant steps of mining front advance. The data needed for this services comes from the AH Episodes (see this chapter) and in particular Bobrek Mine seismic catalog and Bobrek mine front advance, as depicted in Figure 2, next to "Using Seismic catalog" and "Using mining front advance", respectively. Any other, previously filtered catalog can be introduced as well. In addition, the front window size is requested to be set by the user (in meters).

Image Removed

Figure 2.

The results will be demonstrated after clicking on the "Run" button (blue box in Figure 2). An example of the resulting histograms is shown in Figure 3. The energy histogram is similar. Zooming in/out, options for linear/logarithmic y-axis and interval/cumulative histogram plotting are available for both events and energy charts. The results are also available in numerical format, and can be selected after clicking on the small arrow, indicated by the red circle in Figure 1.

Image Removed

Figure 3.

• Front Advance Visualization:This is a service dedicated to mining induced Episodes and is directly connected with the Time Dependent Seismic Hazard Service. It provides ....... The data needed for this services comes from the AH Episodes (see this chapter) and in particular Bobrek Mine seismic catalog and Bobrek mine front advance, as depicted in Figure 4, next to "Using Seismic catalog" and "Using mining front advance", respectively. Any other, previously filtered catalog can be introduced as well.Additional parameters are requested by the User (Figure 4):

Image Removed

Figure 4.

• Chose line date: The User may select a date among the ones given in the list, corresponding to specified positions of the mining front. The User can click on "Show front positions" tab (Figure 4), to obtain a view of these locations and choose one of the for the impending analysis.
• Select Magnitude column: The user may click on the small arrow in the respective tab (Figure 4) in order to chose among different magnitude scales, in the cases where they are available (e.g. ML, Mw, etc).
• Mmin:The User is now 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 Y-axis for the plotting.

• Margin along front strike [m]: The distance (margin) along the front strike is requested in this field. This distance is equal for both directions of the front strike. Events will be spatially constrained by this margin together with the Distance along the front advance" (see field below).

• Distance along the front advance [m]: The distance along the front advance is requested in this field. This distance is equal for both sides of the front (i.e. in front of and behind the front). Events will be spatially constrained by this margin together with the "Margin along the front strike" (see field above).

RESULTS: (to be completed system failed)

• Integrated episode data Visualization: This is an alternative way to access integrated Episode data visualization, already described in "AH Episode Chapter".

•  Waveform Viewer Guide: Waveform viewer is a seismic waveform processing tool. The User may observe, interact and elaborate waveforms corresponding to signals recorded by seismic stations and perform various actions such as phase determination and point picking. These pickings are saved by the system and can be further used in waveform-based services such as Spectral Analysis, Source Localization and Moment Tensor Inversion. The options provided by the waveform viewer are described in Figure 5:
  When clicking on one waveform, additional options appear.The user selects the component(s) that he/she wishes to be displayed in the screen. East-West, North-South, Vertical.

...

Image Removed

1. Horizontal zooming in-out.
2. Vertical zooming in-out.
3. Undo zooming.
4. Select between phase (start and end point) picking and single point picking.
5. Only P-wave is enabled in this Application. (In other Applications, selection between P-wave and S-wave picking are possible).
6. Undo picking.
7. Horizontal zooming tool. The User may alternatively zoom in-out the waveform by clicking on this small vertical bar and move the
8. mouse left-right.
9. Collapse the details of the waveform.
10. Move the selected (zoomed) part of the waveform left-right.

Note that different

Picking Phase:

The User has to pick a starting and an ending point from the Vertical component of a station (**Z channel - see Figure 5). Then, he/she has to repeat this picking for the other stations.

Image Removed

NOTE: Although it is not necessary to pick P-wave arrivals in all of the waveforms, a minimum of 8 picks is required for the service to proceed to the calculations (stated also at the bottom of Figure 5). The number of the seismograms and P-wave phases picked, are updated, each time the User selects makes a new picking.

•  Maps Guide: Basemaps

...

•  Plot Properties: Basic plot handling

...