| 2016年4月16日熊本地震滑动分布反演与分析 |
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| 引用本文： | 解全才,张庆云,马强,张景发.2016年4月16日熊本地震滑动分布反演与分析[J].世界地震工程,2021,0(3):189-199. |
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| 作者姓名： | 解全才 张庆云 马强 张景发 |
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| 作者单位： | 1. 中国地震局工程力学研究所 地震工程与工程振动重点实验室, 黑龙江 哈尔滨 150080;2. 中国地震局第一监测中心, 天津 300180;3. 应急管理部国家自然灾害防治研究院, 北京 100085 |
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| 摘 要： | 综合利用强震数据、GPS数据和InSAR数据基于双断层模型反演熊本地震滑动分布，通过选择合理的介质模型和平滑因子，分别对数据进行单独反演和联合反演。从结果分析可以看出:三种数据联合反演的结果最优，最终滑动模型为:断层1走向为236°，倾角65°，滑动角-150.6°，最大滑动量为6m；断层2走向为206°，倾角72°，滑动角-155°，最大滑动量为4m。基于K-net和Kik-net获取永久位移快速反演得到的滑动分布结果与基于GPS数据，Sentinel-1A InSAR数据反演甚至联合反演得到滑动分布结果比较一致，表明大震后利用高密度强震动台网后快速获取滑动分布用于震后应急响应和灾害评估是切实可行的，同时认为此次地震发震断层为右旋走滑的断层系统。
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| 关 键 词： | 熊本地震 强震动数据 GPS数据 InSAR 滑动分布 |
Slip inversion of the Kumamoto earthquake on April 16, 2016 |
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| XIE Quancai,ZHANG Qingyun,MA Qiang,ZHANG Jingfa.Slip inversion of the Kumamoto earthquake on April 16, 2016[J].World Information On Earthquake Engineering,2021,0(3):189-199. |
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| Authors: | XIE Quancai ZHANG Qingyun MA Qiang ZHANG Jingfa |
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| Affiliation: | 1. Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engneering Machanics, China Earthquake Administration, Harbin 150080, China;2. The First Monitoring and Application Center, China Earthquake Administration, Tianjin 300180, China;3. National Institute of Natural Harzards, Ministry of Emergency Management of China, Beijing 100085, China |
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| Abstract: | Based on the strong moiton data, GPS data and InSAR data, the slip distribution of Kumamoto earthquake is inverted with double fault model. By selecting suitable medium model and smoothing factor, the data are inverted separately and jointly. The inversion result indicates that the joint inversion wtih three datasets is optical. The ultimate slip model is: the strike angle of fault 1 is 236°, the dip angle of fault 1 is 65°, and the rake angle of fault 1 is-150.6°, the maximum slip of fault 1 is 6m; the strike angle of fault 2 is 206°, the dip angle of fault 2 is 72°, and the rake angle of fault 2 is-155°, the maximum slip of fault is 4m. The quick slip inversion result obtained from K-net and Kik-net permanent displacement are in good agreement with those obtained from GPS data, Sentinel-1A InSAR data and the joint invesison result. The results indicate that it is feasible and reliable to obtain the slip distribution quickly after a large earthquake by using high-density strong motion network for post-earthquake emergency response and disaster assessment. The seismogenic fault of the Kumamoto earthquake is considered to be the right-lateral strike-slip fault system. |
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| Keywords: | Kumamoto earthquake strong motion data GPS data InSAR slip distribution |
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