A 3D model of the central asia mantle from dispersion of Rayleigh-wave phase velocities |
| |
| Authors: | V M Kozhevnikov O A Solovei |
| |
| Institution: | 1.Institute of the Earth’s Crust, Siberian Branch,Russian Academy of Sciences,Irkutsk,Russia |
| |
| Abstract: | Frequency-time analysis was applied to records of Rayleigh surface waves due to teleseismic earthquakes (M ≥ 6.0) to obtain
dispersion curves of fundamental mode phase velocities for paths between 51 pairs of digital seismic stations in the Asian
IRIS networks; the range of periods was 10–200 s. For each of these pairs we derived 1D-shear-velocity sections that fit the
corresponding dispersion curves and image the integral earth structure down to depths of ∼650–700 km beneath each of the interstation
seismic paths, which traverse the area of study in different directions. These structures were used by Yanovskaya (2001) to
derive a 3D-shear-velocity model by 2D tomography, imaging the distribution of the larger horizontal inhomogeneities in the
Central Asia mantle for depths of 50 to 600 km, and to construct 2D-velocity sections for five lines passing through the major
tectonic features of Central Asia. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
