Fig. 7

Vector discrepancies of the modeled M₂ OTL displacements to + 10% linear perturbations in TW1. The modeled M₂ OTL displacements in the east component (top panel), north component (middle panel), and vertical component (bottom panel) to + 10% linear perturbations of the density (left), bulk modulus (middle), and shear modulus (right) in the upper crust (a), middle crust (b), and lower crust (c) of TW1 with scales of 0–0.2 mm; and in the LID (d), LVZ (e), and region above the transition zone (f) of TW1 with scales of 0–0.4 mm. The depths of the perturbed layers: the upper crust (0–13.88 km depth), middle crust (13.88–24.52 km depth), lower crust (24.52–32.15 km depth), LID (32.15–80 km depth), LVZ (80–220 km depth), and region above the transition zone (220–400 km depth)