SM059-05
Large-Scale Characteristics of Flux Transfer Events onthe Dayside Magnetopause
Large-Scale Characteristics of Flux Transfer Events onthe Dayside Magnetopause
Wednesday, 16 December 2020: 16:12
Virtual
Abstract:
By using global MHD simulation, we present the large-scale characteristics of flux transfer
events (FTEs) on the dayside magnetopause during periods of generic southward interplanetary magnetic
field. It is revealed that FTEs can be generated both at lower and higher latitudes, and also at almost all
local times. The occurrence rate of FTEs has an apparent longitudinal/latitudinal dependence, with a
higher occurrence rate near noon/at lower latitudes. It is further shown that even under constant solar
wind conditions, the azimuthal lengths of FTEs can have large variability, changing from as short as < 1RE
to as long as > 10RE for different FTEs. Moreover, FTEs generated closer to the subsolar point tend to have
longer extensions along their axes. These new knowledge of large-scale properties of FTEs will improve our
understanding of the solar wind-magnetosphere interaction.
events (FTEs) on the dayside magnetopause during periods of generic southward interplanetary magnetic
field. It is revealed that FTEs can be generated both at lower and higher latitudes, and also at almost all
local times. The occurrence rate of FTEs has an apparent longitudinal/latitudinal dependence, with a
higher occurrence rate near noon/at lower latitudes. It is further shown that even under constant solar
wind conditions, the azimuthal lengths of FTEs can have large variability, changing from as short as < 1RE
to as long as > 10RE for different FTEs. Moreover, FTEs generated closer to the subsolar point tend to have
longer extensions along their axes. These new knowledge of large-scale properties of FTEs will improve our
understanding of the solar wind-magnetosphere interaction.