Table 1. Comparison of the shear-wave splitting results between before and after the Tohoku Earthquake. The averaged and standard deviation (S.D.) data of the polarization direction (Ï•) and time-lag (Ï„) are shown.
From: Shear-wave splitting in a region with newly-activated seismicity after the 2011 Tohoku earthquake
| Â | Â | Before the 2011 Tohoku Earthquake | After the 2011 Tohoku Earthquake | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
Station Name | Number | Ï• (deg.) | S.D. Ï• (deg.) | Ï„ (sec) | S.D. Ï• (sec) | Number | Ï•(deg.) | S.D. Ï• (deg.) | Ï„ (sec) | S.D. Ï„ (sec) |
IWAKMZ | 15 | 41.6 | 53.1 | 0.051 | 0.036 | 171 | 51.7 | 40.1 | 0.049 | 0.041 |
N.IWWH | 10 | 10.5 | 25.6 | 0.071 | 0.058 | 181 | 19.7 | 37.0 | 0.047 | 0.033 |
N.JUOH | 1 | 167.0 | — | 0.060 | — | 105 | 57.3 | 33.9 | 0.045 | 0.026 |
N.KIBH | 4 | 52.3 | 15.3 | 0.073 | 0.011 | 212 | 42.1 | 29.5 | 0.026 | 0.015 |