• 责任者：Li Fa (Earthquake Administration of Anhui Province ; Heifei 230031 ; China) ; Li Gangfeng
• 刊名：South China Journal of Seismology
• 出版年：2012
• 卷期：32(1)
• 关键词：强震 ; strong seisms ; after shocks ; 安徽 ; Anhui Province
• 页码：p.28-34
• 图表：3 illus., 1 table., 11 refs.
• 分类号：0500
• issnNo：ISSN1001-8662
• isbnNo：CN44-1266/P

FAMILY: Arial; FONT-SIZE: 10.5pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt" lang=EN-US>Using Anqing M4.8 earthquake sequence data recorded by Anqing station of Anhui Digital Seismic Network, by matlap shear wave splitting order,  making shear wave splitting study on aftershocks sequence of M4.8 Anqing earthquake on January 19, 2011.  The results show that there are two preferred polarization directions from the fast shear wave.  N73°E and N94°E, respectively,  which were resulted from the anisotropy of the stress-induced cracks (EDA). The polarization direction for the fast shear wave N73°E was in accord with principal compression stress axis N74°E of the source stress field. But the polarization direction for the fast shear wave N94°E was different, which may be due to the stress disturbance imposed by the M4.8 mainshock on regional background stress field.