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GEOMAGNETIC FIELD ELEMENTS OF THE BULGARIAN TERRITORY FOR 2020.0 EPOCH
Abstract
It is well known that geomagnetic field varies in time, as well as in space. Besides, the world magnetic models which are the main sources of information concerning the values of geomagnetic field elements in a particular place, we present more precise and accurate model of these elements covering the territory of Bulgaria. Our study uses information from the last absolute geomagnetic survey involving measurements in 473 points, secular data from Panagyurishte (PAG) and several other Intermagnet observatories near Bulgaria, as well as secular magnetic measurements of the Bulgarian network. Above and beyond the scientific investigation which are performed using geomagnetic field values, this information has also practical application. The most significant element is the geomagnetic declination, which is widely used in geodesy, cartography and their associated navigational systems. The geomagnetic declination is very important for navy and aviation (civil or military), radio connections, etc. As the geomagnetic field changes with time, the topography maps has to be updated regularly. Each edition must have a reliable value of the geomagnetic declination to allow orientation with the help of a compass. Present paper gives most up-to-date models of the total geomagnetic field (F), horizontal component (H) and declination (D) over the whole territory of Bulgaria determined for the 2020.0 epoch. The observatory measurements, existing records and calculations of geomagnetic field elements are also described.
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References11
Thébault, E., Finlay, C.C., Beggan, C.D. et al. International Geomagnetic Reference Field: the 12th generation. Earth Planet Sp 67, 79 (2015). DOI: 10.1186/s40623-015-0228-9
Chulliat, A., S. Macmillan, P. Alken, C. Beggan, M. Nair, B. Hamilton, A. Woods, V. Ridley, S. Maus and A. Thomson, The US/UK World Magnetic Model for 2015-2020: Technical Report, National Geophysical Data Center, NOAA. 2015, DOI: 10.7289/V5TB14V7
Korte, M., Lesur, V. (2012): Repeat station data compared to a global geomagnetic field model. Annals of Geophysics, 55, 6, p. 1101-1111.
Haines, G.V.: Regional magnetic field modeling: a review, J. Geomagn. Geoelectr., 42, 1001-1018, 1990.
Cholakov, I., Mihovski, S.: Magnetic repeat station survey of Bulgaria 2007 and 2008, Bulg. Geophys. Journal, vol. 36. 89-98, 2010.
Trifonova, P., M. Metodiev, and I. Buchvarov, Digital data records in PAG geomagnetic observatory available for a 60 years period, Bulgarian Geophys. Journal, vol. 42, 2019, DOI: 10.34975/BGJ-2019.42.5
Metodiev, M. and Trifonova, P., Bulgarian Geomagnetic Reference Field (BulGRF) for 2015.0 and secular variation prediction model up to 2020, Annales Geophysicae, 35, 5, pp 1085--1092, 2017, DOI: 10.5194/angeo-35-1085-2017
Metodiev M. Modelling of declination’s secular variation for the purposes of regional topographic mapping, Bulgarian Geophys. Journal, vol. 40, p. 76-84, 2014
Georgiev, Chr., Kostov, K., Cholakov, I., Isopors of Declination in Bulgaria for the Period 1940-1980, Bulgarian Geophysical Journal Vol XII No 3, 1986
Metodiev M., Trifonova P., Buchvarov I., Modeling of geomagnetic field secular variations observed in the Balkan area for purposes of regional topographic mapping, Vol. 16, , EGU General Assembly, Vienna, 2014
Kostov, K., Cholakov, I. and Buchvarov, I. The geomagnetic field on the territory of Bulgaria – epoch 1980.0, Bulgarian Geophys. Journal, vol. 17, 42-54, 1991.
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