Intellectual Merit
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One of the most powerful applications of fault-zone LiDAR scans is to serve as the before image for comparison with a survey acquired after a future surface-rupturing earthquake. Then, every displaced feature acts as a geodetic marker from which an ultra-high resolution map of the surface displacement field may be constructed. Such a detailed displacement field shows how faults and their containing rock volume act together to accommodate deformation and grow geologic structures over successive earthquakes. This provides new understanding of how earthquake ruptures connect faults to generate larger, more destructive events, and illuminates cryptic, distributed components of deformation needed for improving estimates of long-term deformation rates and seismic hazard. This project advances the analysis and interpretation of differential lidar data collected from the 2010 El Mayor Cucapah earthquake, including the development of fully 3-dimensional approaches to unraveling fault-zone deformation. |
Broader Impacts
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Publication of these results in Science led to significant press coverage, especially in online venues. We developed new perspective-visualizations of the differential lidar data for the press (Figure 4). This project has supported two graduate students (D. Banesh, D. Haddad) as well as collaboration with graduate student O. Teran at CICESE. This effort also sustains a growing collaboration with colleagues J. Fletcher, A. Hinojosa, and J. Gonzalez in CICESE, Baja California. All CICESE scientists named here are coauthors on the Science paper. |