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This Application joins a Seismic Catalog (1st input)  and a Ground Motion Catalog (2nd input) into a joined catalog used for Ground Motion Prediction (Figure 3). Once the User clicks on the 'RUN' tab and calculations are performed, the joint catalog appears on the screen providing all the available options and functions that Catalog provides (see '"AH Episodes'"). 

Figure 3.

•  Seismogram picking tool 

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'Magnitude Conversion' is a application used for establishing linear relationships between different magnitude scales, which can be later used for conversion of magnitudes from one scale to another. The input file is the seismic catalog that can be uploaded from 'Change Input' tab (shown on right side of Figure 7). The application can be performed only in datasets in which more than one magnitude scale (or, alternatively, 'Energy' or 'Seismic Moment' can be introduced as inputs as well) is assigned for the seismic events (e.g. ML and Mw). The parameters that the user has to set/choose are also shown in Figure 7:

Figure 7.

• Choose first vector to compare: The user may choose among the different magnitude scales available in the catalog.
• Choose second vector to compare: The user may choose among the different magnitude scales available in the catalog.
• Regression Method: Three different regression methods can be used - General Orthogonal Regression, Standard Least Squares and Inverted Least Squares.
• Error Variance Ratio: A float number should be assigned here (default is 1). Note that this option is only valid when General Orthogonal Regression method, is chosen.

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