Crustal and Upper Mantle Velocity and Q of Mainland China
Abstract
Multiple-filter technique and generalized linear inversion are applied to group velocity data derived from properly rotated three-component digital surface waves from Seismological Research Observatory stations. Repeated group velocity measurements over the same paths were made possible by using larger aftershocks of several great (M greater than 7) earthquakes that recently occurred in China. Specific attention is paid to the crustal and upper mantle structure of the Qinghai-Xizang plateau and its comparison with those of neighboring tectonic provinces. The results demonstrate the strong lateral heterogeneity in the crust and upper mantle of the Chinese mainland. A particularly thick crust and an upper mantle of relatively low velocity are found underlying the Qinghai-Xizang plateau that corroborates the continental collision between India and Eurasia.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1980
- Accession Number
- ADA096945
Entities
People
- Ta-liang Teng
Organizations
- University of Southern California