2005 | OriginalPaper | Buchkapitel
The Enhancement of the Thermospheric Density During the Sept. 25–26, 2001 Magnetic Storm
verfasst von : Huixin Liu, Hermann Lühr, Wolfgang Köhler
Erschienen in: Earth Observation with CHAMP
Verlag: Springer Berlin Heidelberg
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The CHAMP satellite observed large enhancement of the neutral atmospheric density in the southern auroral region during the Sept. 25–26, 2001 magnetic storm. This enhancement was accompanied by intense auroral electrojets and strong small-scale field-aligned currents. Joule heating rate and the heating rate by these small-scale field-aligned currents are compared. Results show that the heating rate by small-scale field-aligned currents is about 2∼3 orders of magnitude higher than that by the Joule heating, indicating its importance as a heating source.