00478naa#a2200157#i#450# EN\\bibl\46678 20251216153945.2 1681-1208 20130325b2013####ek#y0engy0150####ca RU Geostrophic balance and reversals of the geomagnetic field Journal article Moscow Geophysical Center of the Russian Academy of Sciences 2013 5 с. Journal article local Reshetnyak M Yu www.rjes.ru