【摘要】 根据跨断层形变观测资料变化特点提出了年滑动速率比方法,用于消除观测资料中的粗差、正常年动态和线性趋势变化成分,突出观测资料中的非正常变化信息,以便统一在无量纲的基准下综合分析区域内断层活动水平。以2013年4月20日芦山7.0级地震前四川跨断层形变年滑动速率比异常为例,说明该方法在地震分析预报研究中具有比较好的可行性和实用性。更多还原

【Abstract】 We proposed an annual sliding velocity ratio to annalyse cross-fault deformation observation data.This can be used to eliminate gross error,normal annual dynamic observation and linear trend component,and to highlight the abnormal change information.We use the method to analyze fault activity level in a region by synthesis under a unified dimensionless datum.As an example,we calculated anomalies of annual sliding velocity ratio of the cross-fault deformation observation in Sichuan before the Lushan MS7.0earthquake on April 20,2013.The results show that the method has better feasibility and practicability in the study of earthquake analysis and prediction.更多还原