摘要
对高邮-宝应M4.9地震前湖州台定点形变资料进行了分析,发现其存在趋势异常、短期异常和临震异常。震源机制解结果显示,摆式倾斜仪的倾斜异常的方向与研究区域背景应力场方向一致,形变异常很可能是区域构造应力场改变的反映。
The significant abnormal trends of deformation observations were found at the Huzhou seismostation before the M4.9 Gaoyou-Baoying earthquake. By combining the deformation data with the focal mechanism solu- tion, the results show that the direction of the anomaly is consistent with the direction of background stress field of this area. The observed deformation anomalies are likely to reflect the changes in tectonic stress field.
出处
《大地测量与地球动力学》
CSCD
北大核心
2013年第A01期76-78,共3页
Journal of Geodesy and Geodynamics
基金
中国地震局三结合课题
浙江省地震局局科技项目(2013ZJJ08)
关键词
高邮-宝应朋4
9地震
湖州地震台
形变观测
异常
区域构造应力场
M4.9 Gaoyou-Baoying earthquake
Huzhou Seismostation
deformation observation
anomaly
regional tectonic stress field
