| 利用方向性函数确定地震破裂特征 |
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| 引用本文： | 刘文龙,吴培稚.利用方向性函数确定地震破裂特征[J].中国地震,1996,12(1):93-99. |
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| 作者姓名： | 刘文龙 吴培稚 |
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| 作者单位： | 安徽省地震局 |
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| 摘 要： | 本文给出了一种确定地震破裂特征的新方法。定义１与台２的Ｐ波振幅谱之比为方向性函数ＤＧ＝｜ｕ１（ｗ）｜／｜ｕ２（ｗ）｜，比较记录ＤＧ曲线与理论ＤＧ曲线可以同时得到双侧破裂的两个不同方向的破裂长度之比，以及破裂面相对于台１的两个可能的方位角。
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| 关 键 词： | 地震破裂 震源参数 破裂特征 方向性函数 |
Fracture Feature Determination of an Earthquake by Using the Directional Function |
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| Liu Wenlon, Wu Peizhi,Chen Yuwei.Fracture Feature Determination of an Earthquake by Using the Directional Function[J].Earthquake Research in China,1996,12(1):93-99. |
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| Authors: | Liu Wenlon Wu Peizhi Chen Yuwei |
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| Abstract: | In this paper, a new method for determining fracture feature of earthquakes has been put forward. The generalized directional function DG is defined as the ratio of P amplitude spectrums recorded at station 1 and station 2 DG= , through Gomparison between the recorded DG curve and theoretical curves, the ratio of fracture lengths in two opposite directions of a bilateral fracture, and the angle between the station 1 and the main rupturing propagating direction can be determined simultaneously. Theoretically speaking, it only needs records of three stations distributed homogeneously to determine fracture feature of an earthguake. The main rupturing propagating direction of a strong aftershock (ML5. 4) of the Tangshan earthquake (Ms7. 8) has been obtained in use of the new method, and has been compared with the result of earthquake source mechanism. It shows that this new method is meaningful. |
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| Keywords: | Seismic repture Source parameter Fracture feature |
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