Volume 42 Issue 9
Sep.  2017
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NIE Linjuan, QIU Yaodong, SHEN Wenbin, ZHANG Suqin, ZHANG Bingbing. Accuracy Evaluation and Applicability of IGRF12 and WMM2015 Model in Chinese Mainland[J]. Geomatics and Information Science of Wuhan University, 2017, 42(9): 1229-1235, 1291. DOI: 10.13203/j.whugis20160143
Citation: NIE Linjuan, QIU Yaodong, SHEN Wenbin, ZHANG Suqin, ZHANG Bingbing. Accuracy Evaluation and Applicability of IGRF12 and WMM2015 Model in Chinese Mainland[J]. Geomatics and Information Science of Wuhan University, 2017, 42(9): 1229-1235, 1291. DOI: 10.13203/j.whugis20160143
shu

Accuracy Evaluation and Applicability of IGRF12 and WMM2015 Model in Chinese Mainland

  • 1.

    School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China

  • 2.

    Hubei Water Resources Technical College, Wuhan 430070, China

  • 3.

    Key Laboratory of Geospace Environment and Geodesy, Ministry of Education, Wuhan University, Wuhan 430079, China

  • 4.

    Institute of Geophysics, China Earthquake Administration, Beijing 100081, China

Funds: The National Natural Science Foundation of China Nos.41274032, 41474018; the Open Research Fund Program of the State Key Laboratory of Geodesy and Earth's Dynamics No. SKLGED2017-2-2-E
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  • Author Bio:

    NIE Linjuan, PhD, associate professor, specializes in geomagnetic field inversion recovery theory and geological application research. Email:ljnie@whu.edu.cn

  • Corresponding author:

    QIU Yaodong, PhD candidate, specializes in satellite geomagnetic data processing and geomagnetic navigation. E-mail:ydqiu@whu.edu.cn

  • Received Date: December 16, 2016
  • Published Date: September 04, 2017
    Graphical Abstract
    • Abstract
  • In this paper, we calculate the differences of a geomagnetic field between observatories and the main magnetic field by using NGDC-720 model and observed data collected at 36 stations from 2008 to 2015 in the Chinese mainland area. The accuracy and applicability of the IGRF12 and WMM2015 models were evaluated with the RMSE. The results suggest that:the IGRF12 model is in good agreement with the annual mean value of geomagnetic observatories; but for different stations, the precision of IGRF12 model presents a huge difference. The model error in IGRF12 and WMM2015 have similar spatial distribution characteristics, and the maximum, minimum, and as root mean of magnetic elements are very close to one another. The RMSE of declination and the total magnetic field were 16'and 124.96 nT. Therefore, in studies of regional geomagnetic anomalies, regardless of the IGRF12 or WMM2015 as main magnetic field, both are feasible.
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    • References (17)
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