The 2019 M_w 7.1 Ridgecrest earthquake opens an opportunity to investigate how soon we can produce a reliable fault geometry and subsequently a robust source model based on high-rate Global Positioning System (GPS) data. In this study, we conduct peak ground displacement (PGD) magnitude scaling, real-time centroid moment tensor (CMT) calculation and rapid kinematic slip inversion. We conclude that a four-station PGD warning with a magnitude of M_w 7.03 can be issued at 24 s after initiation of the rupture. Fast CMT inversion can initially recover the correct nodal planes at 30 s. The kinematic slip model reveals that the M_w 7.1 earthquake is a predominant dextral strike-slip event with both normal and thrust components resolved. The earthquake shows a bilateral rupture with a low propagation speed of ∼2.1 km s⁻¹ and a slip maxima of ∼4 m. The total moment is 5.18 × 10¹⁹ N m (M_w 7.11). We further suggest that a reasonable source model will be available in a simulated real-time mode within 30 s after the earthquake occurring, without using full high-rate GPS waveforms. This research highlights the significance of high-rate GPS for rapid earthquake response and modelling of kinematic rupture, which is also generalized by the hypothetical real-time GPS analysis for the 2016 M_w 7.8 Kaikoura earthquake and the 2010 M_w 7.2 El Mayor-Cucapah earthquake.

中文翻译：

---

GPS地震的快速反应和模拟高速率的应用：在2019年的情况下，中号_W¯¯ 7.1级地震里奇克莱斯特

2019年中号_W¯¯ 7.1里奇克莱斯特地震打开了一个机会来研究我们如何才可以产生基于高速率的全球定位系统（GPS）数据的可靠的故障几何形状，随后一个强大的源模型。在这项研究中，我们进行了地面峰值位移（PGD）量级缩放，实时质心矩张量（CMT）计算和快速运动学反演。我们得出的结论是，在破裂发生后的24 s内可以发出M _w为7.03的四站PGD警告。快速的CMT反演最初可以在30 s内恢复正确的节点平面。运动滑移模型表明，M _w7.1地震是主要的右旋走滑事件，其法向分量和推力分量均得到解决。地震显示双边破裂，传播速度低至约2.1 km s ^-1，最大滑移量约4 m。总力矩为5.18×10 ¹⁹ N m（M _w 7.11）。我们进一步建议，在地震发生后30秒内，可以使用模拟实时模式获得合理的源模型，而无需使用完整的高速率GPS波形。这项研究突出高倍率的意义GPS快速地震反应和运动破裂，也由2016年的假设的实时GPS分析广义的造型中号_W¯¯ 7.8凯库拉地震和2010年的中号_w 7.2 El Mayor-Cucapah地震。