Fig. 4From: Lithosphere–asthenosphere boundary beneath the Sea of Japan from transdimensional inversion of S-receiver functionsReference velocity models. Red, blue, and green lines represent the reference models for YMB3, JS4, and JPB4, respectively. Solid lines represent the S-wave velocity. Dashed lines represent the P-wave velocity. a Overall view. b Enlarged view for the shallow portionBack to article page