Building Objective 3D Fault Representations in Active Tectonic Settings

摘要: ABSTRACT Developing 3D representations of active faults is an important step to improve seismic‐hazard assessment. However, the geometries can be difficult constrain at depth, and building often subjective. We present a new objective workflow build fault from surface subsurface data that are generally available in tectonic environments. use traces, focal mechanism orientations, relocated hypocenters as geological constraints implicit modeling approach. This method enables us control weights assigned different constraints, increasing accuracy model. evaluate refine our by applying it well‐known natural case study: Puente Hills thrust fault, blind beneath Los Angeles, California, imaged high‐quality seismic reflection generated 1987 M w  6.0 Whittier Narrows earthquake. Then, we apply Xianshuihe–Anninghe left‐lateral strike‐slip systems, China. Implementing this allows for development improved contribute Community Fault Models support system modeling, rupture simulations, regional hazard assessments.