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地震 ›› 1998, Vol. 18 ›› Issue (S1): 10-14.

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我国的地磁短周期变化异常

范国华, 姚同起, 顾左文, 朱克佳   

  1. 中国北京 100081 中国地震局地球物理研究所
  • 收稿日期:1998-06-03 修回日期:1998-07-17 出版日期:1998-10-20 发布日期:2022-09-30
  • 作者简介:范国华,男,1941年2月出生,研究员,主要从事地磁测深、地球内部电磁感应等地磁学研究工作。

ANOMALY OF SHORT PERIOD GEOMAGNETIC VARIATION IN CHINA

Fan Guohua, Yao Tongqi, Gu Zuowen, Zhu Kejia   

  1. Institute of Geophysics, CSB, Beijing 100081, China
  • Received:1998-06-03 Revised:1998-07-17 Online:1998-10-20 Published:2022-09-30

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摘要： 扼要叙述了地磁短周期变化异常,利用地磁三分量短周期变化野外同步观测网在我国进行的调查观测以及有关的研究。通过研究发现了我国许多不同种类的地磁短周期变化异常。并对唐山周围地区、云南地区、长江下游及海南岛周围地区的地磁短周期变化异常的特征和引起这些异常的可能的地下源作了简单的描述。对利用地磁短周期变化异常研究地下介质导电率结构的困难、特点以及这一方法本身在地震监视预报研究中的前景提出了意见。

关键词: 地磁短周期变化异常, 非均匀性, 逆矩阵反演, 数值计算模拟

Abstract: The investigation of anomaly of short period geomagnetic variation in China is briefly described in this paper, and different types of anomalies are discovered. The characteristics of the anomalies in Tangshan and its adjacent region, Yunnan province, Hainan island, and Yangtze river delta, and their possible underground origins are also described here. From personal point of view, the features, perspective and difficulties for using short period geomagnetic variation anomaly to investigate the underground conductivity structure and to monitor the earthquake occurrence are briefly mentioned.

Key words: Anomaly of short period geomagnetic variation, Lateral inhomogeneity, Matrix inversion, Digital calculation modelling