A steady-state model for the D- to F-region of the polar cap

For obvious reasons the ionosphere of the polar cap, surrounded by the auroral zone, is only poorly investigated. Even ionosonde data are very scant from geomagnetic latitudes beyond 70°. Since 1997 the European incoherent scatter radar facility EISCAT has an additional installation on Svalbard and...

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Bibliographic Details
Published in:Advances in space research 2008-08, Vol.42 (4), p.703-706
Main Authors: Friedrich, M., Fankhauser, M.
Format: Article
Language:English
Subjects:
Astronomy
Earth, ocean, space
EISCAT
Exact sciences and technology
External geophysics
Ionosphere
Neural networks
Polar cap
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Summary:For obvious reasons the ionosphere of the polar cap, surrounded by the auroral zone, is only poorly investigated. Even ionosonde data are very scant from geomagnetic latitudes beyond 70°. Since 1997 the European incoherent scatter radar facility EISCAT has an additional installation on Svalbard and has been providing electron density data nearly continuously ever since. These measurements which mainly cover the E- and F-regions are supplemented by rocket data from Heiss Island at a comparable magnetic latitude; these data are more sporadic, but cover lower altitudes and densities. A provisional, steady-state, neural network-based model is presented which uses the data of both sites.
ISSN:0273-1177
1879-1948
DOI:10.1016/j.asr.2007.06.077