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Geoscientific Instrumentation, Methods and Data Systems An interactive open-access journal of the European Geosciences Union
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Discussion papers
https://doi.org/10.5194/gi-2018-37
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gi-2018-37
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 19 Oct 2018

Research article | 19 Oct 2018

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Geoscientific Instrumentation, Methods and Data Systems (GI).

The personal difference in absolute geomagnetic measurements

Yufei He1, Xudong Zhao1, Jianjun Wang2, Fuxi Yang3, Xijing Li4, Changjiang Xin5, Wansheng Yan5, and Wentong Tian5 Yufei He et al.
  • 1Institute of Geophysics, China Earthquake Administration, Beijing, 100081, China
  • 2Lanzhou Institute of Seismology, China Earthquake Administration, Lanzhou, 730000, China
  • 3Earthquake Bureau of Xinjiang Province, Urumqi, 830011, China
  • 4Qianling observatory, Xi'an, 713300, China
  • 5Lanzhou observatory, Lanzhou, 730046, China

Abstract. Absolute geomagnetic measurement is very important work in geomagnetic observatories. It plays a decisive role in data quality control and instrument calibration. As modern fluxgate theodolite in absolute geomagnetic measurements has a high precision, usually with 1 second of arc, the measurement results are susceptible to external factors. The personal difference is one of these factors, and it has become an important factor that cannot be ignored in measurement results. In order to estimate the personal difference, an experiment has been designed. Six fluxgate theodolites were used and six observers who were proficient in absolute measurements were invited to this experiment. Then observers made the absolute geomagnetic measurements in turns, and the personal difference among the observers for each instrument was computed by comparing baseline values. Finally, the personal difference can be estimated by a statistical method.

Yufei He et al.
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