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Data from: On the rupture propagation of the 2019 M6.4 Searles Valley Earthquake, and the lack of immediate triggering of the M7.1 Ridgecrest Earthquake

Citation

Cortez, Jordan et al. (2021), Data from: On the rupture propagation of the 2019 M6.4 Searles Valley Earthquake, and the lack of immediate triggering of the M7.1 Ridgecrest Earthquake, Dryad, Dataset, https://doi.org/10.6086/D1D38V

Abstract

The 2019 M6.4 Searles Valley, Southern California, earthquake nucleated on a buried right-lateral fault segment and propagated around a perpendicular fault intersection to a surface-outcropping left-lateral segment, but it did not propagate coseismically to the intersecting fault of the subsequent M7.1 Ridgecrest mainshock. We use the 3D finite element method to explore the physical reasons for this curious rupture path. Rather than model the details of the measured and inferred slip distribution, we use simple constant-traction assumptions to explore how initial stress, hypocenter location, and the depth of burial of the initial right-lateral segment may have influenced rupture propagation. The results suggest that only a narrow range of fault stresses, fault burial depths, and hypocenter locations would result in the observed rupture path in this earthquake. The results may have implications for interactions between faults in Southern California and beyond.

Methods

This dataset consists of ParaView (vtu) files for each of the models discussed in the GRL paper referenced above. It also consists of ParaView state files to aid in reconstructing the figures.

Funding

Southern California Earthquake Center, Award: 20136