Manifestations of field-aligned currents in tomographic observations of the ionospheric F region

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Abstract

In November 1995, observations of the ionospheric F region were made in Scandinavia by means of a tomographic chain extending from the south of Finland to the north of Norway. These observations revealed F region structures which, using optical satellite images and ground-based magnetometer data, are interpreted as manifestations of field-aligned currents in the ionospheric F region electron density. A field-aligned plasma enhancement extending to about 700 km altitude is sometimes seen in connection with an upward current, whereas a larger plasma enhancement with an elevated F layer peak altitude is found to lie close to the region of downward current. (C) 2000 COSPAR. Published by Elsevier Science Ltd.

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Nygrén, T., Tereshchenko, E. D., Khudukon, B. Z., Evstafiev, O. V., Lehtinen, M. S., & Markkanen, M. (2000). Manifestations of field-aligned currents in tomographic observations of the ionospheric F region. In Advances in Space Research (Vol. 26, pp. 939–942). https://doi.org/10.1016/S0273-1177(00)00033-8

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