Geometrical-Feature-Preserving Adjoint Tomography of Near-Surface Structure with Seismic Early Arrival

Figure 6

The synthetic tests: (a) the target model with a hidden layer; (b) the travel time tomography results; (c) the inverted model of the L2-norm EWI; (d) the inverted model of the W2-norm EWI; (e) waveforms fitting of early arrival between the synthetic data (red) and observed data (black) for the L2-norm EWI; and (f) waveforms fitting of early arrival between the synthetic data (red) and observed data (black) for the W2-norm EWI.

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