| 唐山地震序列空间分布复杂性原因研究 |
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| 引用本文： | 刘蒲雄,吕晓健.唐山地震序列空间分布复杂性原因研究[J].中国地震研究,2012,26(1):1-19. |
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| 作者姓名： | 刘蒲雄 吕晓健 |
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| 基金项目： | This research was funded by the fundamental research funds of Institute of Earthquake Science, China Earthquake Administration （690206） . |
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| 摘 要： | By analyzing higher-accuracy location data of the Tangshan earthquake sequence,a clear distribution pattern of three aftershock belts in the NE,NWW,and NW directions of has been obtained.The analysis reveals three rupture planes of strong events of MS7.8,MS7.1 and MS6.9 in the sequence.It indicates that the complex pattern is closely related to the earthquake source,and the NE-,NWW-and NW-trending regional fault zones,which have been revealed by the research of the pre-seismicity anomaly.In summary,the source is located in the junction of the three fault zones,and the rupture planes of the three strong events located in the source can be regarded as the locked segments on the three fault zones.On these grounds,the paper explains the complexity of the source and epicentral distribution of aftershocks.
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| 关 键 词： | Tangshan earthquake Earthquake sequence Precursory seismic activity Earthquake source fault Fault zone |
| 收稿时间： | 2/2/2011 12:00:00 AM |
| 修稿时间： | 3/2/2011 12:00:00 AM |
Study on the Cause of Complex Spatial Distribution of the Tangshan Earthquake Sequence |
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| Liu Puxiong and Lv Xiaojian.Study on the Cause of Complex Spatial Distribution of the Tangshan Earthquake Sequence[J].Earthquake Research in China,2012,26(1):1-19. |
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| Authors: | Liu Puxiong and Lv Xiaojian |
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| Institution: | Institute of Earthquake Science, CEA, Beijing 100036 , China;Institute of Earthquake Science, CEA, Beijing 100036 , China |
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| Abstract: | By analyzing higher-accuracy location data of the Tangshan earthquake sequence, a clear distribution pattern of three aftershock belts in the NE, NWW, and NW directions of has been obtained. The analysis reveals three rupture planes of strong events of Ms7.8, Ms7. 1 and Ms6.9 in the sequence. It indicates that the complex pattern is closely related to the earthquake source, and the NE-, NWW- and NW-trending regional fault zones, which have been revealed by the research of the pre-seismicity anomaly. In summary, the source is locate d in the junction of the three fault zones , and the rupture planes of the three strong events located in the source can be regarded as the locked segments on the three fault zones. On these grounds, the paper explains the complexity of the source and epicentral distribution of aftershocks. |
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| Keywords: | Tangshan earthquake Earthquake sequence Precursory seismic activity Earthquake source fault Fault zone |
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