汶川8.0级地震前后福建地区形变及应力场演化  

Evolution of the Deformation and Stress Field of Fujian Province Pre-and Post-Wenchuan M8.0 Earthquake

作　　者：吴绍祖 陈光[1] 李祖宁[1] 关玉梅[1] 

机构地区：[1]福建省地震局,福建福州350003

出　　处：《华北地震科学》2009年第4期31-35,共5页North China Earthquake Sciences

摘　　要：通过对形变与GPS观测资料的处理,分析汶川地震前后福建地区形变及应力场的演化过程。结果表明,汶川地震前,以晋江-永安断裂带为界,北部为应力压缩区,南部为压力拉张区。汶川地震后,长乐-诏安断裂带及以东区域为应力压缩区,除此以外的西部区域为应力拉张区。On basis of deformation and GPS data, the evolution process of deformation and stress field pre - and post Wenchuan M8.0 earthquake in Fujian province area is analyzed. The results show that before Wenchuan M8.0 earthquake, bounded by Jinjiang - Yong＇ an faults, stress field of the north of Fujian province is compress, and of the south is extension; After Wenchuan M8.0 earthquake, to the east of Changle- Zhao＇ an faults stress field, the stress field is compress, and to the west is extension.

关 键 词：汶川地震 福建地区 形变 应力场 

分 类 号：P315.72[天文地球—地震学]