The 15 May 2020, M 6.5 Monte Cristo Range, Nevada earthquake (MCE) occurred inside the footprint of the semicontinuous MAGNET and continuous Network of the Americas Global Positioning System (GPS) networks, which provide precise geodetic coverage in the western Great basin. The event occurred in the White Mountain seismic gap between twentieth century events in the eastern central Walker Lane, on an east‐northeast extension of faults in the Candelaria Hills. The earthquake precipitated a rapid and sustained GPS field response, which is providing data on the MCE pre‐, co‐, and postseismic deformation. The response was especially rapid owing to ∼1 dozen MAGNET stations immediately surrounding the epicenter being fortuitously occupied with receivers at event time. Modeling the coseismic displacements suggests that the MCE offset was ∼1 m⁠, greater than the individual observations of surface rupture, but consistent with the seismic moment. Although the epicenter is separated from most of the observed surface rupture by ∼10 km⁠, the slip plane inferred from the GPS data spans the gap, suggesting deep slip continuity that tapered toward the surface, making the event partially blind. However, the range of magnitudes estimated from geologic, geodetic, and seismic data overlap in the range of Mw 6.3–6.4. Postseismic displacement over several months occurred in directions aligned with the coseismic displacement, suggesting afterslip of over 9% of the coseismic displacement, too large to be explained by aftershock seismicity, suggesting that most postseismic deformation was aseismic. The interseismic direction of no‐length change was very closely aligned to the MCE slip azimuth, as expected for a strike‐slip event. This alignment is sensitive to transient postseismic viscoelastic deformation from previous earthquakes in the western Great basin, which may have temporarily improved the alignment. Thus, these viscoelastic transients may have created conditions favoring the slip to occur on the MCE fault.

中文翻译：

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内华达州2020年基督山山脉地震之前，之中和之后的地震周期大地观测

2020年5月15日，内华达州蒙特克里斯托山M 6.5级地震（MCE）发生在半连续MAGNET和美洲全球定位系统连续网络（GPS）网络的足迹内，这些网络在大盆地西部提供了精确的大地测量范围。该事件发生在20世纪东部Walker Lane中部事件之间的怀特山地震带，在坎德拉里亚山丘陵断层向东北延伸。地震催生了快速而持续的GPS场响应，这提供了MCE地震前，共震和震后变形的数据。由于在震中附近的震中附近有大约十二个MAGNET站被接收器偶然占用，因此响应特别迅速。对同震位移进行建模表明，MCE偏移量约为1m⁠，大于对地表破裂的个别观察，但与地震矩一致。尽管震中点与大多数观测到的表面破裂相距约10 km ?，但从GPS数据推断出的滑动面跨越了整个缝隙，表明深滑动连续性朝着表面逐渐变细，使该事件部分失明。但是，根据地质，大地测量和地震数据估算的震级范围在6.3至6.4 Mw范围内重叠。数月后的地震位移发生在与同震位移一致的方向上，表明余震超过同震位移的9％，太大，无法用余震地震来解释，这表明大多数震后变形都是抗震的。无长度变化的地震方向与MCE滑移方位角非常接近，如预期的罢工事件。该对准对大西部西部以前地震造成的地震后瞬态粘弹性变形很敏感，这可能暂时改善了对准。因此，这些粘弹性瞬变可能已经创造了有利于在MCE断层上发生滑动的条件。