系统研究了2008年汶川Ms8.0地震序列、2013年芦山Ms7.0地震序列、2020年伽师Ms6.4地震序列、2017年九寨沟Ms7.0地震、2014年康定Ms6.3地震及其Ms5.8最大余震、2014年鲁甸Ms6.5地震等近年来国内主要破坏性地震的震源特性，估计了地震地震矩、拐角频率、应力降、地震S波能量等重要震源参数，识别了中小地震震源破裂方向性，揭示了地震应力降对高频地震动的关键影响。

图1 汶川Ms8.0地震序列、芦山Ms7.0地震序列、伽师Ms6.4地震序列、九寨沟Ms7.0地震的地震矩和拐角频率

图2 芦山Ms7.0地震中三次Ms5.4余震的破裂方向性

成果目录：

  1. 王宏伟, 任叶飞, 温瑞智, 周影. 地震动非参数化谱反演可靠性分析. 西南交通大学学报. 2022, 57(1): 182-190.
  2. Kun Ji, Yefei Ren, Ruizhi Wen, Chun-Hsiang Kuo. Near-field velocity pulse-like ground motions on February 6, 2018 MW6.4 Hualien, Taiwan earthquake and structural damage implications. Soil Dynamics and Earthquake Engineering, 2019, 126, paper ID: 105784.
  3. Hongwei Wang, Yefei Ren, Ruizhi Wen, Peibin Xu. Investigating the Contribution of Stress Drop to Ground-Motion Variability by Simulations Using the Stochastic Empirical Green’s Function Method. Pure and Applied Geophysics, 2019, 176(10): 4415–4430.
  4. Hongwei Wang, Yefei Ren, Ruizhi Wen, Peibin Xu. Breakdown of Earthquake Self‐Similar Scaling and Source Rupture Directivity in the 2016–2017 Central Italy Seismic Sequence. Journal of Geophysical Research: Solid Earth, 2019, 124(4): 3898-3917.
  5. Yefei Ren, Ying Zhou, Hongwei Wang and Ruizhi Wen. Source Characteristics, Site Effects, and Path Attenuation from Spectral Analysis of Strong‐Motion Recordings in the 2016 Kaikōura Earthquake Sequence. Bulletin of the Seismological Society of America, 2018, 108(3B): 1757-1773.
  6. Yefei Ren, Hongwei Wang and Ruizhi Wen. Imprint of Rupture Directivity From Ground Motions of the 24 August 2016 Mw6.2 Central Italy Earthquake. Tectonics, 2017, 36(12): 3178–3191.
  7. 王宏伟, 任叶飞, 温瑞智. 2017年8月8日九寨沟MS7.0地震震源谱及震中区域品质因子. 地球物理学报, 2017, 60(10): 4117-4123.
  8. Hongwei Wang, Ruizhi Wen, and Yefei Ren. Simulating Ground-Motion Directivity Using Stochastic Empirical Green’s Function Method. Bulletin of the Seismological Society of America, 2017, 107(1): 359-371.
  9. 王宏伟, 温瑞智, 任叶飞, 宋晋东. 基于强震记录快速确定康定地震的震源破裂方向研究. 西南交通大学学报, 2016, 51(6): 1138-1146.
  10. Ruizhi Wen, Hongwei Wang, and Yefei Ren. Rupture Directivity from Strong-Motion Recordings of the 2013 Lushan Aftershocks. Bulletin of the Seismological Society of America, 2015, 105(6): 3068-3082.
  11. 温瑞智, 王宏伟, 任叶飞, 冀昆. 芦山余震震源参数及震源区品质因子反演. 哈尔滨工业大学学报, 2015, 47(4): 58-63.
  12. 任叶飞, 温瑞智, 周宝峰, 黄旭涛. 2013年4月20日四川芦山地震强地面运动三要素特征分析. 地球物理学报, 2014, 57(6): 1836-1846.