【摘要】 利用SAM方法对2005年2月15日新疆乌什6.3级地震前、后S波分裂特征进行了初步研究。结果表明,乌什6.3级地震前1年半左右,慢S波时间延迟出现表征区域应力增加并持续上升的变化,而快S波偏振方向出现表征应力场转向的异常变化。更多还原

【Abstract】 We study primarily S-wave splitting character before and after Wushi earthquake of M_S 6.3 on Feb.15,2005,in Xinjiang with SAM method.The result shows that time delay of slow S-wave rises continuously about 1.5 years before Wushi Earthquake of M_S 6.3,which reflects regional stress increases,and polarization direction of quick S-wave shows such abnormal change that the direction of regional stress field turns.更多还原