North–South Asymmetries in Earth’s Magnetic Field

• DOI: 10.1007/s11214-016-0273-0
• Publication Date: 2016-07-12T10:08:09Z
• Authors: K. M. Laundal; I. Cnossen; S. E. Milan; S. E. Haaland; J. Coxon; N. M. Pedatella; M. Förster; J. P. Reistad
• Keywords: Ionospheric dynamo region; Mercury's magnetic field; Field line; Electron precipitation

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