| 大震前短周期瑞利面波的前兆异常特性 |
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| 引用本文： | 冯德益,盛国英.大震前短周期瑞利面波的前兆异常特性[J].地球物理学报,1983,26(3):288-294. |
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| 作者姓名： | 冯德益 盛国英 |
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| 作者单位： | 国家地震局兰州地震研究所 |
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| 摘 要： | <正> 本文试图从实际观测资料中寻找大震前短周期瑞利面波的某些前兆异常特性,并从理论上加以分析讨论。初步结果表明,瑞利面波的群速、相速及波形、频谱等在大震前均可能显示出一定的前兆异常特性。
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| 关 键 词： | 瑞利面波 震前 前兆异常 瑞利波群速度 短周期 相速 次地震 频谱 瑞利波速度 射线途径 |
| 收稿时间： | 1981-01-02 |
PREMONITORY ABNORMAL CHARACTERISTICS OF SHORT-PERIOD RAYLEIGH SURFACE WAVE BEFORE STRONG EARTHQUAKES |
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| PENG DE-YI SHENG GUO-YING.PREMONITORY ABNORMAL CHARACTERISTICS OF SHORT-PERIOD RAYLEIGH SURFACE WAVE BEFORE STRONG EARTHQUAKES[J].Chinese Journal of Geophysics,1983,26(3):288-294. |
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| Authors: | PENG DE-YI SHENG GUO-YING |
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| Institution: | Seismological Institute of Lanzhou, State S&;ismological Bureau |
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| Abstract: | By using the observational data and wave propagation theory in the case of two-phase medium, the premonitory changes of some characteristics, such as the group velocity, phase velocity, waveform and spectrum off short-period Rayleigh waves before the Iaxge earthquakes are studied and analysed. |
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