Journal cover Journal topic
Geoscientific Instrumentation, Methods and Data Systems An interactive open-access journal of the European Geosciences Union

Journal metrics

  • IF value: 1.023 IF 1.023
  • IF 5-year<br/> value: 1.557 IF 5-year
    1.557
  • CiteScore<br/> value: 0.86 CiteScore
    0.86
  • SNIP value: indexed SNIP
    indexed
  • SJR value: indexed SJR
    indexed
  • IPP value: indexed IPP
    indexed
  • h5-index value: 10 h5-index 10
Geosci. Instrum. Method. Data Syst., 6, 231-238, 2017
https://doi.org/10.5194/gi-6-231-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
07 Jul 2017
Stability analysis of geomagnetic baseline data obtained at Cheongyang observatory in Korea
Shakirah M. Amran1,2,3, Wan-Seop Kim1,2, Heh Ree Cho1, and Po Gyu Park1,2 1Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon 34113, Rep. of Korea
2University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Rep. of Korea
3National Metrology Institute of Malaysia, Lot PT 4803 Bdr Baru Salak Tinggi, 43900 Sepang, Selangor, Malaysia
Abstract. The stability of baselines produced by Cheongyang (CYG) observatory from the period of 2014 to 2016 is analysed. Step heights of higher than 5 nT were found in H and Z components in 2014 and 2015 due to magnetic noise in the absolute-measurement hut. In addition, a periodic modulation behaviour observed in the H and Z baseline curves was related to annual temperature variation of about 20 °C in the fluxgate magnetometer hut. Improvement in data quality was evidenced by a small dispersion between successive measurements from June 2015 to the end of 2016. Moreover, the baseline was also improved by correcting the discontinuity in the H and Z baselines.

Citation: Amran, S. M., Kim, W.-S., Cho, H. R., and Park, P. G.: Stability analysis of geomagnetic baseline data obtained at Cheongyang observatory in Korea, Geosci. Instrum. Method. Data Syst., 6, 231-238, https://doi.org/10.5194/gi-6-231-2017, 2017.
Publications Copernicus
Download
Short summary
In this work, we analysed the Cheongyang geomagnetic baseline data from 2014 to 2016. We observed a step of more than 5 nT in the H and Z baseline in 2014 and 2015 due to artificial magnetic noise in the absolute hut. The baseline also shows a periodic modulation due to temperature variations in the fluxgate magnetometer hut. The quality of the baselines was improved by correcting the discontinuity in the H and Z baselines.
In this work, we analysed the Cheongyang geomagnetic baseline data from 2014 to 2016. We...
Share