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A brief historical review of the geomagnetic field measurements in the territory of former Yugoslavia follows. In 1957 continuous magnetic recordings began at Grocka Geomagnetic Observatory (GCK). Field measurements at repeat stations were made at the same time. Grocka Observatory is still the only institution of its kind in the territory of former Yugoslavia. The frequency of the repeat...
Storm of October 2003 and November 2004 belongs to the second maximum in the 23rd solar sunspot's cycle. Spectacular solar-geophysical processes were registered in the geospace from 21 to 31 October 2003. During 03-10, November 2004, the largest flare were accompanied by halo CMEs emission and the super active sunspot groups dominated in the solar activity. During those days, in the magnetic field...
A prominent large-scale ionospheric disturbance was observed in the European mid-latitude sector during the recent extreme space weather event in October 2003. Measurements of the horizontal component of the geomagnetic field H, the critical frequency of the F 2 layer foF2, and the vertical total electron content (TEC) from the European network of observational sites are used to describe the...
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