基于GNSS观测资料研究云南地壳形变与地震的关系

Research on Relationship between Crustal Deformation and Earthquake Based on GNSS

以云南省内GNSS连续观测资料为基础,进行扣除区域内稳定基准点、滑动均值等数据处理绘制云南省内区域形变场运动速率时序图,分析在此期间发生的地震事件与地壳形变之间的关系。分析认为,当部分点位运动方向背离长趋势运动背景时,云南省内发生地震的危险性较大,为GNSS连续观测资料用于地震预测预报方面做出了探索。

Based on processing the data which were recorded by GNSS continuous observation stations in Yunnan Province by deducting intro-regional stable reference point, sliding mean value etc. , we obtained timing dia- gram of regional deformation field movement rate of Yunnan Province, and analyzed the relationship between crustal movement and the seismic events occurred during this period. The analysis results showed that movement direction of some points deviated away from crust movement background in the long trend, earthquake was more likely to occur in Yunnan. This research made an exploration for GNSS continuous observation data used in earthquake prediction and forecasting.