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高邮4.9级地震前滁州地震台电磁扰动异常分析
Study on anomalous variation of electromagnetic disturbance at Chuzhou station before the Gaoyou M4.9 earthquake
- DOI:
- 作者:
- 李军辉1) 何康1) 李琪2) 孙盼盼1)
Li Junhui 1)，He Kang1)，Li Qi 2) and Sun Panpan 1)
- 作者单位:
- 1） 中国合肥 230031 安徽省地震局中国北京 100081中国地震局地球物理研究所
1) Earthquake Administration of Anhui Province, Hefei 230031, China2) Institutes of Geophysics, China Earthquake Administration,, Beijing 100081, China.
- 关键词:
- 电磁扰动；异常；高邮M4.9地震;?
electromagnetic disturbance; anomalous; Gaoyou M4.9 earthquake.
- 摘要:
- 采用超限率方法分析滁州地震台2011年至2013年电磁扰动数据，结果发现2012年7月20日江苏高邮M4.9级地震前电磁扰动脉冲超限频次和超限幅度均出现明显的增强；进一步分析该台电磁扰动子夜时段（00：00-04:00）的脉冲变化，结果显示,子夜时段的电磁扰动脉冲在震前明显增强。分析认为,2012年滁州地震台电磁扰动脉冲增强变化与高邮M4.9地震具有明显的相关性。
In this article, Over rate analysis (ORA) is applied to analyze the electromagnetic disturbance data from 2011 to 2013 at Chuzhou Seismic Station, the result show that the frequency and intensity of ORA apparent increase a few days before Gaoyou M4.9 earthquake; in further study, we analyzed the appearance of electromagnetic disturbance pulse at midnight(00:00-04:00),the results show apparent increase about ten days before earthquake, too. So, these features are likely to be correlated with the Gaoyou M4.9 earthquake.
