Geophysical Journal | 2001 volume 23 2

On differences of secular geomagnetic variations in Arctic and Antarctic

© Yaremenko L.N., Mishchenko Y.P., Shenderovska O.Y.

In the present epoch (the second part of the 20th century and the precursory 400 years) the geomagnetic field secular variations in Antarctic are 2-3 times larger than those in Arctic. The surrounding focus isolines of secular variations have eastern drift on the Atlantic and Indian ocean coast. The special features of the secular variations in Antarctic are possibly due to the difference of the lower mantle beneath the continents and the oceans.

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