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- 2017
2013年Ms 7.0级中国芦山地震断层曲面模型的构建及其滑动分布的大地测量反演
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Abstract:
根据中国芦山地震的余震序列分布和地质构造情况，联合GPS同震位移和水准测量数据，采用格网搜索法和方差分量估计（variance covariance component，VCE）方法建立了芦山地震的断层曲面模型。以建立的断层曲面模型为基础进行滑动分布反演，反演结果表明此次地震以明显的逆冲滑动为主，存在左旋趋势，断层的滑动主要发生在4.56~18.25 km深度范围内，最大滑动量为0.70 m，在深度12.64 km附近，释放的能量为8.77×1018 N/m（相当于Mw 6.57级）。对曲面模型进行棋盘检验，结果表明其能够较好地分辨出断层深度浅于13 km的凹凸体，其面积最小为8 km×8 km
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