| 1976年盐源—宁蒗地震序列的破裂特征 |
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| 引用本文： | 张四昌,王绍晋.1976年盐源—宁蒗地震序列的破裂特征[J].地震,1995(3):275-279. |
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| 作者姓名： | 张四昌 王绍晋 |
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| 作者单位： | 河北省地震局
中国石家庄050021(张四昌)，云南省地震局
中国昆明650041(王绍晋，龙晓帆)，天津市地震局 中国天津300201(刁桂苓) |
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| 基金项目： | 地震科学联合基金会资助课题(91057) |
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| 摘 要： | 使用地震活动图象和震源机制资料的构造分析方法，研究盐源－宁蒗地震序列的破裂特征。结果认为：６．７级地震破裂面是北北东向左旋走滑断层，５．６级６．４级地震破裂面是两条北西西向右旋走滑断层，构成以北北东向断为主干的共轭破裂组合，该序列受弥渡－木里地壳深部活动断裂带控制。
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| 关 键 词： | 地震序列 地震活动图像 震源机制 地震 破裂特征 |
FRACTURE FEATURE OF 1976 YANYUAN-NINGLANG EARTHQUAKE SEQUENCE |
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| Zhang Sichang.FRACTURE FEATURE OF 1976 YANYUAN-NINGLANG EARTHQUAKE SEQUENCE[J].Earthquake,1995(3):275-279. |
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| Authors: | Zhang Sichang |
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| Institution: | Zhang Sichang(Seimological Bureau of Hebei Province)Wang Shaojin Long Xiaofan(Seimological Bureau of Yunnan Province)Diao Guiling(Seimological Bureau of Tianjin) |
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| Abstract: | The fracture feature of the Yanyuan-Ninglang earthquake sequence was studied using by tectonic analysis based on the data of seismicity pattern and focal mechanisms. The strike of the faulting plane of the M6.7 event is NNE with left lateral strike slipping, and that of both the M5.6 and M6.4 events are NWW with right lateral strike slipping, forming a combination of the conjugate fractures, of which the dominant is NNE faulting. This sequence was controlled by the Midu-Muli deep-seated fault zone. |
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| Keywords: | Seismic sequence Seismicity pattern Focal mechanism Yan yuan-Ninglang |
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