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地震 ›› 1999, Vol. 19 ›› Issue (4): 419-422.

• • 上一篇    

泾阳MS4. 8地震的磁效应研究

鲁秀玲1), 张创军2), 段锋1), 关昕2)   

  1. 1)中国西安 710068 陕西省地震局监测预报中心
    2)中国乾县 713300 陕西省乾陵综合地震台
  • 收稿日期:1998-01-16 修回日期:1998-12-30 出版日期:1999-10-31 发布日期:2022-09-23
  • 作者简介:鲁秀玲,女, 1947年1月出生,高级工程师,主要从事地震分析预报及地磁研究工作。

STUDY ON THE GEOMAGNETIC EFFECT OF JINGYANG MS4. 8 EARTHQUAKE

Lu Xiuling1), Zhang Chuang jun2), Duan Feng1), Guan xin2)   

  1. 1) Center for Monitoring and Prediction, Seismological Bureau of Shaanxi Province, Xi'an 710068, China
    2) Qianling Seismic Station, Shaanxi Province, Qianxian 713300, China
  • Received:1998-01-16 Revised:1998-12-30 Online:1999-10-31 Published:2022-09-23

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摘要： 以陕西关中地区地磁垂直分量(Z) 作为计算暴时扰日变化DS (Z) 的加卸载响应参量,从DS (Z) 的响应比值P (Z) 的变化表明, 在泾阳地震前, 靠近震中的泾阳、乾陵二台出现P (Z) ≥3. 5的异常变化,而周至、华阴台却没有这种异常变化。这表明加、卸载响应比方法可用来预测陕西关中地区的中强地震。同时,也表明在此方法的使用过程中,必须考虑台站所处的地理位置及地质构造条件。

关键词: 断裂带, 加卸载响应比, 暴时扰日场, 泾阳地震

Abstract: By using the geomagnetic vertical component (Z) in Guanzhong region, Shaanxi province as a load-unload response parameter in computing DS (Z), it is found from the changes of loading-unloading response ratio P (Z) of DS (Z) that, before the Jing yang earthquake anomaly changes of P (Z )≥ 3. 5 occurred at Jing yang and Qianling geomagnetic stations, which are close to the epicenter. Instead, there was not such change tha to ccurred in Zhouzhi and Huayin counties. It is shown that the loading-unloading response ratio method can be used to predict moderately strong earthquakes in Guanzhong region, Shaanxi province. It indicates that geographic locations of observational stations and geological structures beneath them should be considered when this method is used.

Key words: Faul tzone, Ratio of loading-unloading response, Geomagnetic storm time field, Jingyang earthquake