岳彩亚,杨强,刘慧娟

• 1:聊城大学地理与环境学院
• 2:城市空间信息工程北京市重点实验室
• 3:中国测绘科学研究院
• 4:四川省第一测绘工程院

摘要(Abstract)：

为了研究汶川地震后川滇地区地壳形变的时空分布带来的影响，该文以GPS速度场为约束，通过构建平移-旋转-应变模型计算得到区域内2008-06—2010-04、2010-05—2013-04和2013-05—2016-06这3期应变率场，并结合断裂带分布对不同期地壳应变场进行对比分析。结果表明：川滇地区地壳水平运动整体以继承性运动为主，强震的发生并未改变区域内整体运动趋势与作用力方向，且应变率场和面膨胀率的高值区域主要分布在断裂带间的交叉点或周边，变化较大区域主要位于几条深大断裂带及周边。汶川地震后区域内速度场随时间变化更加复杂且量级有所增加，且该地震对整个川滇地区地壳活动具有重要影响，而玉树地震和雅安地震主要对北半部分地壳起到一定调节作用，雅安地震后该区域应变累计增强，周边仍然有发生强震的危险性。

关键词(KeyWords)： 川滇区域;平移-旋转-应变-模型;断裂带;应变场

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41974010);; 聊城大学博士科研启动基金项目(318052115);; 城市空间信息工程北京市重点实验室经费资助项目(20220120)

作者(Author): 岳彩亚,杨强,刘慧娟

DOI: 10.16251/j.cnki.1009-2307.2022.09.007

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