We used various fault models to calculate the stress change on Ridgecrest epicentral locations and surrounding fault systems. In general, the 2019 Ridgecrest earthquake sequence was triggered by past historical earthquakes. The computed stress changes in both foreshock and mainshock epicentral locations have exceeded the stress trigger threshold, which suggests that past historical earthquakes play a key role in driving the Ridgecrest earthquake source structures closer to failure. We calculated the stress on surrounding faults imparted by the Ridgecrest mainshock and its combination with past earthquakes. The Garlock fault is generally stressed by the mainshock, with a maximum of 1.573 bar on central segment. However, our combined model yielded decreased stress on central Garlock fault. Furthermore, we calculated the expected seismicity rate on the Garlock fault and found that the central segment had a higher seismicity rate than the western and eastern segments.

中文翻译：

---

2019年的里奇克莱斯特地震序列：历史地震触发的应力以及周围断层系统的应力

我们使用了各种断层模型来计算Ridgecrest震中位置和周围断层系统的应力变化。总的来说，2019年的里奇克莱斯特地震序列是由过去的历史地震触发的。计算得出的前震和主震震中中心位置的应力变化都超过了应力触发阈值，这表明过去的历史地震在促使Ridgecrest地震震源构造接近于破坏中起着关键作用。我们计算了Ridgecrest主震及其与过去地震相结合所引起的周围断层的应力。Garlock断层通常受到主震的应力作用，中段最大为1.573 bar。但是，我们的组合模型降低了中央加洛克断裂的应力。此外，