Lateral heterogeneity in the earth's upper mantle is investigated by inverting dispersion
curves of long‐period surface waves (100–330 s). Models for seven different tectonic …

Long‐period (100–330 s) fundamental‐mode Love and Rayleigh waves have been
processed to measure the great circle phase velocities for about 200 and 250 paths …

Phase and group velocities of G 2, G 3, R 2 and R 3 (100-330s) are measured by the single-
station method and are inverted to give a spherical harmonic representation of the velocity …

Phase and group velocities of G2, G3, R2 and R3 (100-330 s) are measured by the single-
station method and are inverted to give a spherical harmonic representation of the velocity …

A data set of 2600 paths for Rayleigh waves and 2170 paths for Love waves was selected in
order to resolve azimuthal anisotropy of surface waves in the period range 70–250 s. The …

Long‐period surface waves are used to map lateral heterogeneities of velocity and
anisotropy in the upper mantle. The dispersion curves are expanded in spherical harmonics …

The lateral heterogeneity and apparent anisotropy of the upper mantle are studied by
measuring Rayleigh and Love wave phase velocities in the period range 100–250 s …

Rayleigh waves generated by the Peru—Bolivian border earthquake of 1963 August 15
have been analysed at 35 WWSSN stations in the period range between 150 and 300 …

Long‐period (100‐250 sec.) Love and Rayleigh waves are used to map heterogeneity and
azimuthal anisotropy in the upper mantle. Spherical harmonic descriptions of anisotropy up …

A data set of 2600 paths for Rayleigh waves and 2170 paths for Love waves enabled us to
retrieve three‐dimensional distributions of different seismic parameters. Shallow layer …