Velocity Anisotropy in the Crust and Upper Mantle of North China

详细信息   

• 责任者：Huang Zhongxian (Institute of Crustal Dynamics ; China Earthquake Administration ; Beijing 100085 ; China）
• 刊名：Chinese Journal of Geophysics
• 出版年：2011
• 卷期：54（3）
• 关键词：速度结构 ; velocity structure ; 地壳 ; crust ; 上地幔 ; upper mantle ; 华北地区 ; North China
• 页码：p.681-691
• 图表：4 illus., 1 table, 40 refs.
• 分类号：0400
• 出版序号：20120057
• issnNo：ISSN0001-5733
• isbnNo：CN11-2074/P

摘要

This paper presents the result of a surface wave study on azimuthal anisotropy in the crust and upper mantle of North China, and makes a preliminary comparison with the result of S-wave splitting in the region.  The anisotropy in the study region is characterized by obvious layering, as evidenced by the inversion result from surface waves. On the other hand the remarkable scatter of apparent splitting parameters may also be attributed to multi-layering and/or slanting symmetry axis of the anisotropy. Assuming a multi-layer anisotropy model, the differences between surface wave and S-wave splitting in most cases can be qualitatively explained.