Time variation of the geomagnetic field on the territory of the Republic of Macedonia in the last 50 years

The paper presents the explorations done by the Department of geology and geophysics during 2002 - 2012 on the territory of the Republic of Macedonia. Bearing in mind that time interval for observation of the geomagnetic field elements is relatively short, extending of the series is made using published data for the geomagnetic field values from the neighboring countries. Analysis is made using data from Pangyurishte - Bulgaria and Grocka - Serbia. As best observed point from the network of repeat stations in the Republic of Macedonia stand point Galicica. In this analysis, data from observatories Grocka and Panagyurishte are reduced for Galicica point and done the time dependence of the change of geomagnetic elements. The average values of the observed elements of the geomagnetic field on the territory of the Republic of Macedonia in the period from 2002 to 2010 are: for the total vector ΔT = 30nT, declination ΔD = 0,08o and inclination ΔI = 0,02o