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![Figure 3. a) Smoothed FATT result. b) Checkerboard-Test with 1 m box size and 10% velocity variations relative to the FATT model. c) FWI result d) FWI result in comparison to archaeological records [Andersen 1998]. Identified structures: top layer (T), stone mural (S), mural foundations (F), early wall phases (W1-3), trench structures (G1/G2), infilling (V), possible deeper foundations (A/B).](docannexe/image/9213/img-3-small480.jpg)




