Abstract
We present an application of Full-waveform Tomography (FWT) on a 2-D deep seismic profiling dataset to characterize the shallow crustal structures of the TanLu Fault Zone (TLFZ) acting as the tectonic boundary between the South and North China Plates. The raw data preprocessing workflow is presented in detail to make preparation for FWT. Based on the acoustic approximation, we build the subsurface Vp model using the cross-correlation misfit function to invert only the wide-angle first arrivals. We also adopt the multiscale inversion strategy by progressively adding the high-frequency data into the inversion to gradually reveal finer structures. The inverted Vp model indicates the existence of two sedimentary basins and a high-velocity anomaly which could be linked to magma intrusion. Also, three tectonic faults are interpreted based on the FWT result and the geological evidence on the surface.
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