부산대학교 도서관

On March 26, 2020, a M 5.0 earthquake occurred in the Delaware Basin, Texas, near the border between Reeves and Culberson Counties. This was the third largest earthquake recorded in Texas and the largest earthquake in the Central and Eastern United States since the three M 5.0–5.8 induced events in Oklahoma during 2016. Using multistation waveform template matching, we detect 3,940 earthquakes in the sequence with the first event in the area occurring in May 2018. The M 5.0 earthquake sequence occurred on a ENE (∼082°) normal fault dipping ∼37° toward the south. The earthquake caused 6 mm of oblique surface deformation, and geodetic slip inversion suggests slip was isolated above 6 km depth. We find that the sequence was most likely induced by nearby wastewater disposal operations, and seismicity rates in the region surrounding the M 5.0 will likely continue to increase in the future if disposal operations continue unaltered. Key Points: The March 25, 2020 M 5.0 earthquake in West Texas and the seismicity leading up to it was most likely induced by wastewater disposalGeodetic slip inversion using InSAR data suggests the mainshock rupture was concentrated above 6 km depthForecasts suggest that seismicity rates will likely continue to increase if industry operations are unaltered [ABSTRACT FROM AUTHOR]