JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 114, B01315, doi:10.1029/2008JB005746, 2009

Auxiliary Material

Auxiliary material for this article contains illustrations of a synthetic test to the inversion algorithm, the complete kinematic rupture models for the 2004 M_w 6 Parkfield earthquake inferred from inversion of GPS data only, strong motion data only, and combination of GPS and strong motion data, and also a test to the resolving ability of risetimes.

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Figure S1
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   Format:  EPS
   Recommended viewer:  GhostView
   Caption:  Synthetic test of the two-step combined inversion.

Figure S2
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   Format:  EPS
   Recommended viewer:  GhostView
   Caption:  Synthetic test: Horizontal GPS static offsets: synthetic data and predicted by the best inferred rupture model.

Figure S3
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   Format:  EPS
   Recommended viewer:  GhostView
   Caption:  Strong-motion velocity waveforms corresponding to the synthetic test: fault-normal (230°), fault-parallel (140°), and vertical components of motion.

Figure S4
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   Recommended viewer:  GhostView
   Caption:  Slip amplitude distribution inferred from the GPS-only inversion.

Figure S5
   Size:  4.0 MB
   Format:  EPS
   Recommended viewer:  GhostView
   Caption:  Rupture model inferred from the strong motion inversion.

Figure S6
   Size:  3.0 MB
   Format:  EPS
   Recommended viewer:  GhostView
   Caption:  Rupture model inferred from the two-step combined inversion using an irregular grid.

Figure S7
   Size:  1.7 MB
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   Caption:  Test with constrained risetimes: Slip amplitude and 1-s rupture time contours inferred from the two-step combined inversion using an irregular grid.

Table S1
   Size:  16 KB
   Format:  TXT
   Caption:  Average rupture model obtained from the two-step combined inversion of GPS and strong-motion data using an irregular grid.

Table S2
   Size:  16 KB
   Format:  TXT
   Caption:  Minimum misfit rupture model obtained from the two-step combined inversion of GPS and strong motion data using an irregular grid.

Citation: Custódio, S., M. T. Page, and R. J. Archuleta (2009), Constraining earthquake source inversions with GPS data: 2. A two-step approach to combine seismic and geodetic data sets, J. Geophys. Res., 114, B01315, doi:10.1029/2008JB005746.