Abstract:We present observations of sidewalk curbs that are offset by creep on the Hayward Fault in Fremont, California. Using structure-from-motion photogrammetry techniques, we construct 3D models from suites of 2D photos taken from 2015 to 2018 at 20 sites along the fault. By aligning and comparing these models, we measure the 3D displacements of each offset sidewalk through time at precisions of ∼0.5 mm/yr. We find that on average individual offset curbs record <40% of the overall creep rate measured at near… Show more
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