Abstract
Estimation of c ontribution of those or other sources in total magnetic field of the Earth is important i n c onnection wi th s eparation of i ts c onstituents with the p urpose of research of their nature, m echanism of origin etc. In this article s ome aspects of s ubdivision of internal and external s ources of the magnetic field of the E arth are c onsidered, as well as estimation of c ontribution of different s ources in the total fi eld and its variations is given. F or the s olving of the p rob-lem results of observations have been used of Ukrainian magnetic observatories fi rst of all.
Highlights
Èçìåðåíèÿ ïîëíîãî âåêòîðà ìàãíèòíîé èíäóêöèè B, åå ñåâåðíîé Âõ, âîñòî÷íîé Âó è âåðòèêàëüíîé Âz êîìïîíåíò ïðîâîäÿòñÿ â ãåîìàãíèòíûõ îáñåðâàòîðèÿõ ( ÃÎ )
 ñîîòâåòñòâèè ñ ðåçóëüòàòàìè íàáëþäåíèé è ðàñ÷åòîâ ïðèðîñò âåëè÷èíû ïîëíîãî âåêòîðà èíäóêöèè ìàãíèòíîãî ïîëÿ çà ïåðèîä 19582008 ãã. ñîñòàâëÿåò: ÃÎ Êèåâ 1223 íÒë, ÃÎ Îäåññà 1144 íÒë, ÃÎ Ëüâîâ 1323 íÒë
Contributions of the external field to the observatory annual means and a proposal for their corrections // Earth Planets Space. 2007. 59. P. 251257
Summary
1. Ìàãíèòîñôåðíûå èñòî÷íèêè âàðèàöèé DR, DT, DCF õîðîøî îòîáðàæàåò Dst-èíäåêñ ìàãíèòíîé àêòèâíîñòè. Åãî ïîëó÷àþò ïî äàííûì ÷åòûðåõ íèçêîøèðîòíûõ ãåîìàãíèòíûõ îáñåðâàòîðèé. Èíäåêñ ðåãóëÿðíî ðàññ÷èòûâàåòñÿ è ïóáëèêóåòñÿ â áþëëåòíÿõ IAGA, à òàêæå âûñòàâëÿåòñÿ íà ñàéòàõ ìåæäóíàðîäíûõ öåíòðîâ äàííûõ , â ÷àñòíîñòè â Êèîòî, ßïîíèÿ  ñðåäíèõ øèðîòàõ âåëè÷èíó âàðèàöèè îò ìàãíèòîñôåðíûõ èñòî÷íèêîâ Δm ìîæíî âû÷èñëèòü â ïåðâîì ïðèáëèæåíèè ïî ôîðìóëå. Δm = Dst cos Φ, ãäå Φ ãåîìàãíèòíàÿ øèðîòà îáñåðâàòîðèè. Ïîñêîëüêó ðàçíèöà ãåîìàãíèòíûõ øèðîò óêðàèíñêèõ îáñåðâàòîðèé èçìåíÿåòñÿ â ïðåäåëàõ
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