Abstract
Such measurements were carried out in Bulgaria for the first time in 2001. The geomagnetic meridian is defined by using the geomagnetic theodolite “Shulze” and the geographic meridian - by GPS and geodetic way. In the beginning the declination was measured at the threshold of the runway. Very big anomalies were detected in these places. For this reason the measurements were made outside of the runway for three of the airports and on the secular stations near to another three of them. The measured values coincide very well with the values obtained by reduction of the declination according to the Panagjuriste geomagnetic observatory from 1990 to 2001.
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References
Butchvarov, I., Cholakov, I., 1986, Investigation of the Ratio between the Magnetic Theodolite Magnets Moments and the Error at the Determination of the Earth Magnetic Field Declination, Bulg. Geoph. J. XII(2): x–x, (in Bulg.).
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CHOLAKOV, I. (2006). MEASUREMENTS OF MAGNETIC DECLINATION AT THE AIRPORTS IN BULGARIA. In: Rasson, J.L., Delipetrov, T. (eds) Geomagnetics for Aeronautical Safety. NATO Security through Science Series. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-5025-1_17
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DOI: https://doi.org/10.1007/978-1-4020-5025-1_17
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-5023-7
Online ISBN: 978-1-4020-5025-1
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