Group B, Poster #056, Tectonic Geodesy
Understanding off-fault deformation in geodetic block models of southern California
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Poster Presentation
2023 SCEC Annual Meeting, Poster #056, SCEC Contribution #13228 VIEW PDF
and fault slip rates are determined by differential rotation rates at block boundaries. Because block models require that faults connect to form closed, rigid blocks, model faults must often be inferred or invented, limiting understanding of deformation away from mapped structures. Recent advances in block modeling allow the relatively rapid creation of suites of possible connections within a single fault system. We find that considering an ensemble of fault geometries and model regularization parameters leads to robust estimates of fault slip rates and model-based uncertainties, and highlights regions that require significant off-fault deformation (i.e., not on the original mapped faults).
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