Survey and Continuous GNSS in the Vicinity of the July 2019 Ridgecrest Earthquakes
Survey and Continuous GNSS in the Vicinity of the July 2019 Ridgecrest Earthquakes
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DOI：
10.1785/0220190324
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发表时间：
2020-02
影响因子：
3.3
通讯作者：
M. Floyd;G. Funning;Y. Fialko;Rachel L Terry;T. Herring
中科院分区：
文献类型：
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作者：
M. Floyd;G. Funning;Y. Fialko;Rachel L Terry;T. Herring
2019年7月，加州里奇克雷斯特发生的Mw 6.4和Mw 7.1地震发生在加洛克断层中心以北的莫哈韦沙漠共轭走滑断层上，彼此相隔不到34小时。在此，我们介绍在地震发生后立即对18个全球导航卫星系统站点进行的调查结果，其中包括在第一次地震后立即建立的记录第二次地震运动的五个站点，以及整个区域连续的全球导航卫星系统站点的处理结果。我们的实地工作在应对地震提供了额外的限制地面位移由于这两次地震，补充数据从空间稀疏网络的连续记录GNSS网站在该地区，以及时间稀疏干涉合成孔径雷达数据，能够捕捉到一个合并的变形信号从两次地震。
The Mw 6.4 and Mw 7.1 Ridgecrest, California, earthquakes of July 2019 occurred within 34 hr of each other on conjugate strike-slip faults in the Mojave Desert, just north of the central Garlock fault. Here, we present the results of a survey of 18 Global Navigation Satellite Systems (GNSS) sites conducted in the immediate aftermath of the earthquakes, including five sites that recorded the motion of the second earthquake after having been set up immediately following the first, as well as processed results from continuous GNSS sites throughout the region. Our field work in response to the earthquakes provides additional constraints on the ground displacement due to both earthquakes, complementing data from a spatially sparser network of continuously recording GNSS sites in the area, as well as temporally sparser Interferometric Synthetic Aperture Radar data that were able to capture a combined deformation signal from the two earthquakes.