【摘要】 为优化地磁观测条件，开展了燕郊、夏垫等测点迁移工作；按照测点迁移原则与实施技术方案，完整地收集并整理了地质构造与地球物理等方面的基本资料；进行了野外实地勘察、磁场梯度的测量，确定了新测点，在新老测点上进行了较长时间的地磁场对比观测；应用多种方法分析研究了地磁对比观测资料。结果表明，新老测点与有关测点的地磁变化具有良好的一致性，并得到了新老测点之间的地磁数据的接点差更多还原

【Abstract】 In order to optimize the condition of the geomagnetic observation, the moving work of the Yanjiao and Xiadian sites was carried out. According to the principle and technical program of moving the site, the basic geological and geophysical data and others were collected and sorted out completely. The field investigations and measurement of geomagnetic gradient were performed, and new sites were determined. The geomagnetic field was comparatively observed at the new and old sites for long time. Using the many methods, the geomagnetic data of the comparative observation were analyzed and researched. The results show that the geomagnetic variations at the new, old and relative sites have good consistent. The site differences of geomagnetic data between the new and old sites were also obtained .更多还原