With Chinese latest global gravity field model WDM94, the authors provide the geoid height and mean free air gravity anomaly of Antarctica (The range of latitude is from -60° to -90°). In order to con
This paper consists of two parts. The first part gives an account of reviewing the work already done for the aurora borealis, dealing with arctic explorers and observing station. since International G
Used the ionization theory of the cosmic ray charged particles in the polar ionosphere, the influence of the cosmic ray Forbush decrease on the low ionosphere in the polar region is studied in this pa