| 剪切波分裂中的快、慢波识别方法 |
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| 引用本文： | 刘希强.剪切波分裂中的快、慢波识别方法[J].西北地震学报,1992,14(4):17-24. |
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| 作者姓名： | 刘希强 |
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| 作者单位： | 山东省地震局 国家地震局兰州地震研究所 |
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| 摘 要： | 本文改进了两种震相识别方法。用最大特征值法可识别快、慢剪切波到时,用波形识别算子法可确定快剪切波的到时及其序列。将两种方法结合起来,可比较和鉴别地震波的到时及其类型,从而可以避免将转换P波误认为快剪切波,达到最终确定剪切波到时及其序列的目的。以1985年禄劝Ms6.1地震为例,用上述方法进行了剪切波分裂的研究,结果与张性扩容各向异性假说是一致的。
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| 关 键 词： | 地震 剪切波 分裂 慢波 识别 |
| 收稿时间： | 1992/3/23 0:00:00 |
METHODS TO IDENTIFY FAST AND SLOW S-WAVE IN S-WAVE SPLITTING |
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| Liu Xiqiang.METHODS TO IDENTIFY FAST AND SLOW S-WAVE IN S-WAVE SPLITTING[J].Northwestern Seismological Journal,1992,14(4):17-24. |
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| Authors: | Liu Xiqiang |
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| Institution: | Seismological Bureau of Shandong Province, Jinan, China |
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| Abstract: | This paper, raises two methods of distinguishing the seismic phase. By the greatest eigenvalue method, the arrival time of fast and. slow shear-wave and convert P wave may be determined. By the method of wave distinguishing factor,fast shear-wave arrival time and wave sequence may be determined. Combining these two methods, the possbility of taking the conversion P wave as fast shear-wave may be removed. By using the above-mentioned methods to 1983 Luquan Ms 6.1 earthquake, the results show that the fast shear-wave polarization direction is in keeping with what EDA hypothesis raised. |
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