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Earth, Planets and Space
Fig. 14 | Earth, Planets and Space

Fig. 14

From: Adjoint-based direct data assimilation of GNSS time series for optimizing frictional parameters and predicting postseismic deformation following the 2003 Tokachi-oki earthquake

Fig. 14

Two-dimensional contour maps of the cost function when slip velocities are assimilated. Cost functions are calculated as functions of (A5, A5–B5), (A5, L5), and (A5–B5, L5), while all the other frictional parameters are fixed to a their optimum values and b true values. Stars indicate the locations of a the optimum values and b the true values. The contour intervals are set to be 10 for (A5, A5–B5) and 40 for (A5, L5) and (A5–B5, L5)

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