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  North-South Asymmetries in Earth's Magnetic Field : Effects on High-Latitude Geospace

Laundal, K. M., Cnossen, I., Milan, S. E., Haaland, S. E., Coxon, J., Pedatella, N. M., et al. (2017). North-South Asymmetries in Earth's Magnetic Field: Effects on High-Latitude Geospace. Space Science Reviews, 206, 225-257. doi:10.1007/s11214-016-0273-0.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-2EDC-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0000-4312-0
Genre: Journal Article

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 Creators:
Laundal, K. M., Author
Cnossen, I., Author
Milan, S. E., Author
Haaland, S. E.1, Author              
Coxon, J., Author
Pedatella, N. M., Author
Förster, M., Author
Reistad, J. P., Author
Affiliations:
1Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832288              

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 MPIS_GROUPS: Planets and Comets
 MPIS_PROJECTS: Cluster
 Abstract: The solar-wind magnetosphere interaction primarily occurs at altitudes where the dipole component of Earth’s magnetic field is dominating. The disturbances that are created in this interaction propagate along magnetic field lines and interact with the ionosphere–thermosphere system. At ionospheric altitudes, the Earth’s field deviates significantly from a dipole. North–South asymmetries in the magnetic field imply that the magnetosphere–ionosphere–thermosphere (M–I–T) coupling is different in the two hemispheres. In this paper we review the primary differences in the magnetic field at polar latitudes, and the consequences that these have for the M–I–T coupling. We focus on two interhemispheric differences which are thought to have the strongest effects: 1) A difference in the offset between magnetic and geographic poles in the Northern and Southern Hemispheres, and 2) differences in the magnetic field strength at magnetically conjugate regions. These asymmetries lead to differences in plasma convection, neutral winds, total electron content, ion outflow, ionospheric currents and auroral precipitation.

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Language(s): eng - English
 Dates: 2018-01-3120162017
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1007/s11214-016-0273-0
BibTex Citekey: Laundal:2016-060
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Title: Space Science Reviews
Source Genre: Journal
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Pages: - Volume / Issue: 206 Sequence Number: - Start / End Page: 225 - 257 Identifier: -