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Summary: This directory contains a second version of the mosaics of the 2-dimensional (2D) surface strain fields of the 2019 Mw7.1 and Mw6.4 Ridgecrest earthquakes derived from optical correlation. These results are derived through a modification to the inversion approach described in Barnhart et al. 2020 (Nature Geoscience) wherein we remove the UTM reference frame when building the Green’s function that is incorporated into the inversion for the displacement gradient tensor. The removal of the reference frame has the effect of improving the condition number of the Green’s function and making the inversion more stable. The mosaics are in UTM Zone 11N coordinates with 10m spatial resolution. Each file is in units...
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This Data Release contains co-seismic horizontal and vertical displacements of the 2019 Ridgecrest earthquakes derived from sub-pixel cross correlation of WorldView satellite optical imagery. Additionally, the dataset contains the 2-dimensionsal (2D) and 3-dimensional (3D) surface strain fields, inverted from the surface displacements. We also present an alternative set of 2D surface strain calculations, processed after removal of the UTM reference frame. Associated publication: Barnhart, W.D., Gold, R.D., Hollingsworth, J., 2020 Localized fault zone dilatancy and surface inelasticity of the 2019 Ridgecrest earthquakes. Nature Geoscience. DOI: 10.1038/s41561-020-0628-8.
(1) Lateral displacement measurements made based on optical image correlation results from WorldView satellite images along with (2) local and regional rupture width measurements for the 2019 Mw6.4 and Mw7.1 Ridgecrest earthquakes, CA. These datasets are associated with the publication: Gold, R. D., DuRoss, C. B., & Barnhart, W. D., 2021, Coseismic surface displacement in the 2019 Ridgecrest earthquakes: Comparison of field measurements and optical image correlation results. Geochemistry, Geophysics, Geosystems, 22, e2020GC009326. https://doi.org/10.1029/2020GC009326
    map background search result map search result map Displacement and strain field from the 2019 Ridgecrest earthquakes derived from analysis of WorldView optical satellite imagery (ver. 2.0, May 2021) 2D surface strain calculated after removal of UTM reference frame (alternative) 2D surface strain calculated after removal of UTM reference frame (alternative) Displacement and strain field from the 2019 Ridgecrest earthquakes derived from analysis of WorldView optical satellite imagery (ver. 2.0, May 2021)