After comparing waveform fits based on the two planes of the input moment tensor, we find that a solution adjusted from the nodal plane striking towards 347.0 deg. fits the data better. The adjusted solution uses 5 plane segments (see Table 1 below) designed to match a priori knowledge of the fault (e.g., 3D slab geometry). The seismic moment release based upon this solution is 2.5e+28 dyne.cm (Mw = 8.2) using a 1D crustal model interpolated from CRUST2.0 (Bassin et al., 2000).
SegmentStrike (deg.)Dip (deg.)
1347.013.5
2347.09.0
3347.018.5
4347.023.0
5347.025.0

Table 1. Multi-Segment Parameters.