松山观测台地震短临电磁现象

地震 ›› 2007, Vol. 27 ›› Issue (增刊): 103-111.

松山观测台地震短临电磁现象

李宁¹, 杜学彬¹, 谭大成¹, 叶青², 陈军营¹

1.中国地震局兰州地震研究所, 甘肃兰州 730000;
2.中国地震台网中心, 北京 100036

收稿日期:2007-02-13 修回日期:2007-03-19 出版日期:2007-06-30 发布日期:2021-10-29
作者简介:李宁(1974-), 女, 陕西蒲城人, 2004年在读硕士学位, 主要从事地震电磁现象等研究。
基金资助:
国家科技基础条件平台重点项目(2004DEA71000); 兰州地震研究所论文编号: LC20070017

Imminent electro-magnetic phenomenon related to earthquakes recorded at the Songshan Station

LI Ning¹, DU Xue-bin¹, TAN Da-cheng¹, YE Qing², CHEN Jun-ying¹

1. Lanzhou Institute of Seismology, CEA, Lanzhou 730000;
2. China Earthquake Networks Centre, CEA, Beijing 100036, China

Received:2007-02-13 Revised:2007-03-19 Online:2007-06-30 Published:2021-10-29

摘要/Abstract

摘要： 研究了1995年永登M_S5.8地震、 2003年民乐-山丹M_S6.1地震和1996年天祝西M_S5.4地震前后天祝松山观测台地电、地磁同场地观测数据, 结果表明在前2次强震前显示了地电、地磁场波形“畸变”、短周期扰动和显著电、磁场谱系结构变化的短临信息; 讨论了地震地电场、地磁场短临前兆的机理以及天祝西地震未显示异常的原因。其研究结果对今后地震电磁观测台站的建设有一定实际意义。

关键词: 天祝地震空区, 电磁场, 背景变化, 前兆现象

Abstract: Studied the geoelectric and geomagnetic data observed at the Songshan station before and after the Yongdeng M_S5.8 earthquake of 1995, the Minle-Shandan M_S6.1 earthquake of 2003 and the Tianzhu west M_S5.4 earthquake of 1996, the results show that the imminent geoelectric and geomagnetic information associated with the first two earthquakes are expressed as the waveform distortion, the short period disturbance and the prominent spectrum changes. Besides, the mechanism of the imminent precursor information and the reason why no anomaly appears before the Tianzhu west earthquake are explained. The research results in the paper will play an important role in the future building of the seismic geoelectric and magnetic station.

Key words: Tianzhu earthquake gap, Electric-Geomagnetic field, Background change, Precursor phenomenon

中图分类号:

P315.7

李宁, 杜学彬, 谭大成, 叶青, 陈军营. 松山观测台地震短临电磁现象[J]. 地震, 2007, 27(增刊): 103-111.

LI Ning, DU Xue-bin, TAN Da-cheng, YE Qing, CHEN Jun-ying. Imminent electro-magnetic phenomenon related to earthquakes recorded at the Songshan Station[J]. EARTHQUAKE, 2007, 27(增刊): 103-111.