【摘要】 本文用1970.0年全国地磁普测的归化值,减去按国际地磁参考场(IGRF1985)计算的中国地区地磁正常值,得到地磁异常,绘制了异常等值线图,进而对我国大陆地磁异常分布的特点进行分析,发现地磁异常展布格局与地质构造格局相当吻合,地磁异常与地震分布有着密切的关系。更多还原

【Abstract】 In this paper, magnetic anomaly is gained and the map of anomaly isopleth is drawn up by substracted the normal value of geomagnetism in China continent which calculated by International Geomagnetism Reference Field ( IGRF 1985 ) from the normalized value of nationwide geomagnetic survey in 1970. After analysed the characteristic of magnetic anomaly distribution in our continent, it is found that the pattern of magnetic anomaly distribution tallies with that of geologic structure. Magnetic anomaly has close relations with the distribution of earthquakes.更多还原