@article{Sumaruk_Sumaruk_2013, title={Features of age variations of the geomagnetic field in the northern polar part of the Earth}, volume={35}, url={https://journals.uran.ua/geofizicheskiy/article/view/111357}, DOI={10.24028/gzh.0203-3100.v35i2.2013.111357}, abstractNote={<p>Secular variations of the geomagnetic field on the data of 13 high latitude magnetic observatories at north polar cap are investigated. Secular variations from internal and external sources are selected. It is shown that solar and geomagnetic activities have to a great extent influence for secular variations of different periods.</p>}, number={2}, journal={Geofizicheskiy Zhurnal}, author={Sumaruk, Yu. P. and Sumaruk, T.}, year={2013}, month={Mar.}, pages={137–145} }