5 research outputs found
Use of wild fish and other aquatic organisms as feed in aquaculture: a review of practices and implications in the Asia-Pacific
The solar-wind magnetosphere interaction primarily occurs at altitudes where the dipole component of Earthâs magnetic field is dominating. The disturbances that are created in this interaction propagate along magnetic field lines and interact with the ionosphereâthermosphere system. At ionospheric altitudes, the Earthâs field deviates significantly from a dipole. NorthâSouth asymmetries in the magnetic field imply that the magnetosphereâionosphereâthermosphere (MâIâT) 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 MâIâT 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