3D S-WAVE VELOCITY STRUCTURE OF THE CRUST AND UPPER-MANTLE

In this paper, 238 Rayleigh wave path data are selected and processed by the matched-filtering frequency-time analysis technique and the gri d dispersion inversion method to obtain the 3D S-wave velocity structu re of China mainland and its adjacent sea regions. The results show th at the velocity structure relates to geotectonic division, Bouguer gra vity anomaly is basically controlled by the relief of Moho discontinui ty, the buried depth of LVL in upper mantle concerns the surface heat flow deeply. In this paper, authors indicate the main characteristics of the velocity structure in tectonic active and stable regions.