- 以往认为阶跃距离临界距离为5km,但是有很多例外。
- 本文主要探索应力对于模型的影响。a long-term fault stress model: simulate steady-state stress perturbation around stepovers.
- 这样的应力扰动可以对应更长的阶跃距离。
- 15km for a releasing stepover; 7km for a restraining stepover.
- 这种应力的影响在重叠的阶跃断层中更强。
- 该文列举了很多阶跃断层的地震:1992 Mw 7.3 Landers, California, earthquake; the 2001 Mw 7.8 Kokoxili, China, earthquake; the 2016 Mw 6.5 Norcia, Italy, earthquake; the 2016 Mw 7.8 Kaikōura, New Zealand, earthquake (step gaps as large as 15-20km).
- 图1:阶跃子断层长度分别为28km,重叠为5km.用α角度标记阶跃断层重叠还是分离,<90° overlapping,>90° underlapping.
- 静摩擦力系数下降之后,屈服强度下降。20km for a releasing stepover; 9km for a restraining stepover.