JOINT INTERPRETATION OF UPPER-MANTLE ANISOTROPY BASED ON TELESEISMIC P-TRAVEL TIME DELAYS AND INVERSION OF SHEAR-WAVE SPLITTING PARAMETERS

We inverted shear-wave splitting parameters and simultaneously analyse d delays of teleseismic longitudinal waves to obtain a self-consistent three-dimensional (3-D) image of the anisotropic upper mantle beneath the continents. Efficiency of the simultaneous 3-D analyses of P-resi dual spheres and shear-wave polarizations is demonstrated on data from two regions, southern Sweden and the western USA. The anisotropic inf erences of the subcrustal lithosphere are, to a first approximation, r epresented by homogeneous hexagonal or orthorhombic media with plungin g symmetry axes.