zmap a tool for analyses of seismicity patterns typical applications ...

Figure 5.10. Input parameters for the misfit calculation
To initiate a cumulative misfit analysis, a reference stress model needs to be defined. The
misfit between the observed and the theoretical slip directions estimated based on the
reference stress model will then be calculated. The reference stress mode is defined by: 1)
Plunge of S1 or S3; 2) Azimuth of S1 or S3; 3) R value; and 4) Phi value. Hit `Go' to start
the analysis. Once the calculation is complete, a map will display the misfit f of each
individual event with respect to the assumed reference stress tensor. The symbol size and
gray shading represents the misfit: small and black indicate a small misfit, and large and
white symbols a large misfit.
Figure 5.11 Map of the individual misfit f to an assumed homogeneous stress field
Also displayed will be the cumulative misfit F as a function of Longitude (Figure 88).
Using the `Tools' button the catalog can be saved using the currently selected sorting, the
standard derivative z can be calculated to quantify a change in slope, and two segments
can be compared. Selecting the X-Sec button in the Misfit map will create a cross-section
view of the misfit f of each individual earthquake. Again, the size and color of the symbol
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