Segall P, Lisowski M
Science. 1990 Nov 30;250(4985):1241-4. doi: 10.1126/science.250.4985.1241.
The horizontal displacements accompanying the 1906 San Francisco earthquake and the 1989 Loma Prieta earthquake are computed from geodetic survey measurements. The 1906 earthquake displacement field is entirely consistent with right-lateral strike slip on the San Andreas fault. In contrast, the 1989 Loma Prieta earthquake exhibited subequal components of strike slip and reverse faulting. This result, together with other seismic and geologic data, may indicate that the two earthquakes occurred on two different fault planes.
通过大地测量数据计算得出了1906年旧金山地震和1989年洛马普列塔地震所伴随的水平位移。1906年地震的位移场与圣安德烈亚斯断层上的右旋走滑完全一致。相比之下，1989年洛马普列塔地震显示出走滑和逆断层作用的分量大致相等。这一结果与其他地震和地质数据一起，可能表明这两次地震发生在两个不同的断层面上。
