摘要
利用中法合作布设在青藏高原西北缘的三分量数字地震仪记录到的远震SKS波数据,计算并研究了台站下方岩石圈各向异性的特征研究结果表明:阿尔金断裂系南北的各向异性存在较大差异,阿尔金断裂系附近快波偏振方向在N80E左右,而柴达木盆地快速波偏振方向在N145W左右.同时阿尔金断裂系各向异性强度也比柴达木盆地的强.
Lithosperic anisotropy has been studied using the data of SKS wave recorded at the 3-component stations that were deployed by the Sion-French cooperative seismic experiment in northeastern Tibetan Plateau. Results indicate fairly big differences between anisotropical features of north and south sides of Altyn Fault System. Fast directions near Altyn Fault System average N80°E,whereas it is about N45°W beneath the Qaidam basin. In addition,the former is stronger than the latter,which is a striking indication of oriented material movement deep beneath the Altyn Fault System.
出处
《地球物理学进展》
CSCD
1999年第4期58-65,共8页
Progress in Geophysics
基金
中法合作项目
