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采用麦克斯韦体模型、标准线性体模型和伯格斯体模型,具体研究了1997年玛尼地震在衰减时间1~100 a间的震后位移场和库仑应力场。结果表明:①在1~5 a的短期内,采用标准线性体和伯格斯体模型的震后位移场具有时空上的一致性;而在10 a以上的中长期内,麦克斯韦单元开始起主要作用,表现为采用麦克斯韦体和伯格斯体模型的震后位移场具有时空上的一致性。②虽然应力阴影区和应力触发区随时间而同步扩展,但短期内,采用标准线性体和伯格斯体模型的粘弹性库仑应力场的空间结构具有一致性;而中长期内,采用麦克斯韦体和伯格斯体模型的粘弹性库仑应力场的空间结构具有一致性。为更好地解释震后形变及粘弹性库仑应力触发响应,流变模型的选择需要根据研究的时间段和观测数据源具体确定。
The Maxwellian model, the standard linear model and the Burgers model are used to study the post-earthquake displacement and Coulomb stress field of Mani earthquake in 1997 at the decay time of 1 ~ 100 years. The results show that: ① In the short term from 1 to 5 years, the post-earthquake displacement field using the standard linear body and the Burgers body model has the spatial-temporal consistency; while in the medium-long term over 10 years, the Maxwell unit begins to play a major role It is shown that the post-earthquake displacement field of Maxwellian and Burgers body models has temporal and spatial consistency. ② Although the stress shadow zone and the stress triggering zone expand with time, in the short term, the spatial structure of the viscoelastic Coulomb stress field using the standard linear body and the Burgers body model is consistent. In the medium and long term, The spatial structure of the viscoelastic Coulomb stress field in the Burgers model is consistent. To better explain post-earthquake deformation and viscoelastic Coulomb stress-triggered responses, the choice of rheological model needs to be specifically determined based on the time of the study and the source of the observed data.