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当前海洋磁力探测中为了消除或减小地磁日变化的影响,必须设立地磁日变观测站(简称日变站)测量磁场变化,提供日变校正资料。依据多年工作经验,对作为基站使用的G882磁力仪和Sentinel磁力仪在工作原理、仪器技术性能、工作使用体会等方面进行综合比较分析。结果表明,Sentinel磁力仪比G882磁力仪对环境适应性更好、灵活性更强,进行日变观测时应优先选用。
In order to eliminate or reduce the influence of geomagnetic diurnal variation in current marine magnetic exploration, it is necessary to set up a geomagnetic diurnal variation observatory (hereinafter referred to as diurnal variation station) to measure changes in the magnetic field and provide diurnal variation correction data. Based on years of work experience, the G882 magnetometer and Sentinel magnetometer, which are used as base stations, are compared and analyzed comprehensively in terms of working principle, technical performance of the instrument and work experience. The results show that the Sentinel magnetometer has better adaptability to the environment and flexibility than the G882 magnetometer, and should be prioritized for daily observation.