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Seismic catalog contains various important information as demonstrated in Figure 5 and Figure 6. The User may upload the catalog data in the workspace by selecting "Actions" (field 1, Figure 5) and then "Add to workspace" either as a link (following the updates in the dataset) or as a copy. In both cases the filed can be moved in a particular location (folder) in the User's workspace. Information on the file can also be displayed on the screen and the data can be downloaded in .mat format. Below this field, a short summary of the catalog is provided, containing the number of events, time period that the Episode covers, depth range of seismicity and magnitude range of the events. Below the summary, there are some action tabs (Field 2, Figure 5) including (with respect to the AH Episode) Show Catalog, Seismic Activity Plot,3D Event Distribution, Events in Local Coordinates, Benioff Plot etc. The attributes of the catalog are displayed below 'Data' Section, and they comprise the Name of the attribute, a brief description, the minimum and maximum values and the number of valid values (i.e. values that exist, not NaNs). The action tabs (Field 32, Figure 5) are the following (also see "plot properties" section in "Visualizations" chapter): Histogram, Cumulative Histogram, Reversed Cumulative Histogram and 1-D plot.
Figure 5.
Show catalog (from Actions List, field 2, Figure 65): Detailed information on the attributes of every event in the seismic catalog is demonstrated (Figure p1). These data appear as pop-up windows and are shown in pages, each one containing 20 rows. The User can proceed to the following or previous pages by clicking the left-right arrows shown in the bottom left part of Figure p1.
Figure p1.
- Seismic Activity Step plot (from Actions List, field 32, Figure 65): This option shows the seismic activity plotted against time (Figure p2). Zooming in/out and linear/logarithmic scale of the y-axis are available.
Figure p2.
- 3D events distribution (from Actions List, field 42, Figure 65): 3D spatial distribution of the events foci (longitude,latitude,depth), as circles with size proportional to the event magnitude (Figure p3). Rotation of the plot is possible after clicking and dragging the cursor through the plot area. The focal coordinates of each event are depicted when the cursor is pointing on a circle.
Figure p3.
- Benioff plot (from Actions List, field 52, Figure 65): A Benioff plot (square root of energy against time) can be created for those catalogs which include information on seismic energy released by the seismic events (Figure p4). Zooming in/out and linear/logarithmic scale of the y-axis are available.
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- Events in local coordinates (from Actions List, field 62, Figure 65):This option generates 2-D plot of the epicentral coordinates of the seismic events (Figure p5) in local (cartesian) coordinate system (when those are available). Zooming in/out option is available for this figure.
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Additional plotting options are available by clicking on the gear icon shown in field 7 3 of Figure 6 5 (right hand side). These options include histograms (interval, cumulative and reversed cumulative histograms) and 1-D plots. Zooming in/out and linear/logarithmic scale of the y-axis are available. Moreover, in histograms the bar step can be modified and in 1-D plots the chart type can be switched among column, scatter, spline and line.
Even more visualization options are available at the bottom of the screen, as shown in Figure 76. The epicenters of the seismic events are demonstrated on a google map, which are equipped with zooming, map/satellite view, drawing of national borders and full screen mode options. The events serial numbers, their origin time and the magnitudes, are shown on the screen after the User clicks on one of the events depicted by the red circles. A variety of plots are available as shown in field 1, Figure 7. The User can chose one of the following plot types, defining the attribute to be shown at the X, Y and Z axes:
- 1-D plot with secondary Y-axis (zooming in/out and linear/logarithmic scale of the x-axis and y-axis are available)
- 2-D plot (zooming in/out and linear/logarithmic scale of the x-axis and y-axis are available)
- 2-D plot with secondary Y-axis (zooming in/out and linear/logarithmic scale of the x-axis and y-axis are available)
- 3-D plot (rotation of the plot is possible after clicking and dragging the cursor through the plot area)
- 2-D Histogram, as shown in Figure 8 (rotation of the plot is possible after clicking and dragging the cursor through the plot area).
(See also "plot properties" section in"Visualization" chapter)
Figure 7.
Figure 8.
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