Annales Geophysicae
Annales Geophysicae
ANGEO
Articles | Volume 35, issue 5
Articles | Volume 35, issue 5
https://doi.org/10.5194/angeo-35-1085-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Special issue:
https://doi.org/10.5194/angeo-35-1085-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 35, issue 5
Regular paper
 | 
12 Sep 2017
Regular paper |  | 12 Sep 2017

Bulgarian Geomagnetic Reference Field (BulGRF) for 2015.0 and secular variation prediction model up to 2020

Metodi Metodiev and Petya Trifonova

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Short summary
For regional studies and practical use regional-scale models of the geomagnetic field are necessary. The Bulgarian Geomagnetic Reference Field (BulGRF) for 2015.0 epoch and prediction up to 2020.0 is produced and presented in this paper. It uses data from Panagyurishte (PAG) observatory and the Bulgarian secular network. As a result, our model gives a set of six coefficients which allow the users to obtain the main field values using only the geographic coordinates and a simple calculator.
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Special issue
The Earth’s magnetic field: measurements, data, and applications...