文章基本信息

标题：The Analysis of Baselines for Different Fluxgate Theodolites of Geomagnetic Observatories
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作者：Xin Changjiang ; Suqin Zhang
期刊名称：Data Science Journal
电子版ISSN：1683-1470
出版年度：2015
卷号：10
DOI：10.2481/dsj.IAGA-23
语种：English
出版社：Ubiquity Press
摘要：This paper analyzes the baselines of 8 geomagnetic observatories in the China Magnetic Observatory Network. The baselines of similar variometers were measured by two different fluxgate theodolites during the same time period. The results demonstrate that two baseline values measured by two independent absolute instruments did not completely coincide for the same components even though the differences between pillars and instruments had been corrected. The baseline values were still not smooth, and there existed obvious wave variations for the D, H, and Z components. The causes of this inconsistency might be the differences between the two pillars installed with two independent absolute instruments and instrument problems in some of the observatories. In other words, the difference in the geomagnetic field between two points in the same observational area is not a constant.
关键词：Geomagnetic observatory; Fluxgate theodolite; Absolute measurement; Baseline value