| 地磁Z分量日变幅度相关分析与唐山7.8级地震 |
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| 引用本文： | 卢振业,孙若昧.地磁Z分量日变幅度相关分析与唐山7.8级地震[J].西北地震学报,1984,6(2):53-59. |
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| 作者姓名： | 卢振业 孙若昧 |
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| 作者单位： | 国家地震局分析预报中心
(卢振业)，国家地震局分析预报中心(孙若昧) |
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| 摘 要： | 本文给出了唐山地震前后昌黎台、宝抵台和北京台相对红山台地磁场垂直分量Z日变幅相关分析的结果。结果表明震前三台均有异常显示,昌黎台最为明显,异常时间为数月,异常幅度为数伽马。综合文献1,2]及本文结果,简单讨论了这类变化的可能机制,提出包体破裂失稳—孔隙流体扩散—包体膨胀硬化过程可能是引起这种变化的原因。
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| 收稿时间： | 1983/10/6 0:00:00 |
CORRELATIVITY ANALYSIS ON DAILY CHANGE AMPLITUDE OF GEOMAGNETIC Z COMPONENT AND TANGSHAN 7.8 EARTHQUAKE |
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| Lu Zhenye and Sun Ruomei.CORRELATIVITY ANALYSIS ON DAILY CHANGE AMPLITUDE OF GEOMAGNETIC Z COMPONENT AND TANGSHAN 7.8 EARTHQUAKE[J].Northwestern Seismological Journal,1984,6(2):53-59. |
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| Authors: | Lu Zhenye and Sun Ruomei |
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| Institution: | Centre for Analysis and Prediction of State Seismological Bureau and Centre for Analysis and Prediction of State Seismological Bureau |
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| Abstract: | Applying Changli, Baodi, and Beijing geomagnetic vertical component data, the correlitivity with Hongshan was described. The results show that at all of three stations occurred abnormal variation before Tangshan earthquake. Abnormal variation at Changli was the most obvious, abnormal period lasted for a couple of months, abnormal amplitud was about-10 nt. Based on the results of the references(1,2) and this paper, the mechanism of the geomagnetic abnormal variations was discussed. The process, preseismic instability of inclusion-porous fluid diffusion-dilatation and hardening of inclusion, probably was the reason for the above geomagnetic abnormal variation. |
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