Page History
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- Seed response calculation
- Seismogram picking tool
- Signal download tool
- Catalog Filter
- Coordinates Transformation
- Magnitude Conversion
- FilterOverMminWaveform order
- FilterWithinTime
- Front advance histograms visualization (see "Visualizations" chapter)
- Front advance visualization (see "Visualizations" chapter)
- Integrated episode data visualization (see "Visualizations" chapter)APPENDIX - Column Extractor Services
Description of Low-Level Services:
- Seed response calculation
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- A report with the parameters (slope and intercept) of the regression process and some associated statistical parameters (Figure 8)
- Vectors of the first, second magnitude selected, together with the vector of the new (converted) magnitudes obtained by the application of the regression equation.
- A figure with one magnitude scale plotted versus the other one (scatter plot) and the linear regression curve (Figure 9). Zooming option is enabled for this Figure.
Figure 9.
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- Signal download tool
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This services extracts seed files and event files from a selected catalog into the User workspace. These extracted files can be used later on at any service dealing with waveform processing, including Spectral Analysis, Source Location, Moment Tensor Inversion and Seed response calculation. This is an alternative way of exporting seed files instead of searching into the episode database. The User needs first to select a catalog from the workspace and click subsequently on ACTIONS, USE IN SERVICE and Signal download tool tabs, as indicated by the red boxes in Figure 10In this Service, a certain dataset of events, characterized by Longitude, Latitude, Origin Time and Magnitude, is filtered over a minimum magnitude (i.e. completeness level). The input for this service are four vectors with the values of the previously mentioned parameters as shown in Figure 10 (elements shown in the red box, below "INPUTS"). The User may upload any vector he/she has previously extracted from a catalog (from "change input" tab, Figure 10). This can be done with "Column Extractor" Services, appended at the end of this Chapter. The minimum magnitude has now to be set in order to initiate the filtering process. This can be done in two ways. The first is to type a single magnitude value in the empty box. 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. The User may now click on the "Run" button (blue button, Figure 10) and soon the output results are produced (shown below "OUTPUTS", in Figure 10), corresponding to the vectors of the filtered parameters.
Figure 10.
- FilterWithinTime
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In this Service, a certain dataset of events, characterized by Longitude, Latitude, Origin Time and Magnitude, is filtered between a minimum and a maximum time. The input for this service are four vectors with the values of the previously mentioned parameters After this step, the list of events appears in the screen as shown in Figure 11 (elements shown in the red box, below "INPUTS"). The User may upload any vector he/she has previously extracted from a catalog (from "change input" tab, Figure 11). This can be done with "Column Extractor" Services, appended at the end of this Chapter. The Time Range has now to be set in order to initiate the filtering process. This can be done in two ways. The first is to type a date in the empty box. The second is to select a date from the calendar appearing in the screen after clicking on the empty filed after "Start" or "End" (a calendar is depicted in the green box in Figure 11). The User may now click on the "Run" button (blue button, Figure 11) and soon the output results are produced (shown below "OUTPUTS", in Figure 11), corresponding to the vectors of the filtered parameters.
Figure 11.
- APPENDIX - Column Extractor Services
"Column Extractors" are simple tools which extract specified parameters as vectors from a given catalog. These output vectors they produced can later be used in a variety of low-level and high level services or visualization. Column Extractors can easily be applied by selecting a seismic catalog and choosing "Actions", then "Use in simple component" and finally clicking on one of the Column Extractor tools, as displayed in Figure 12 (indicated by red boxes). Then the User has just to click on the blue "run" button to extract the columns corresponding to each case. These cases are the following:
Figure 12.
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and the User is requested to select an event for extracting event information and seed file. The User may also chose downloading between Seed Signal, Accelerogram Seed Signal, or All, by ticking on the respective box shown at the bottom left corner of Figure 11.Then, the output files are extracted after clicking on the RUN button (green button, bottom Figure 11).
Figure 11.
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Overview
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