The Norwegian expedition continued with topographical mapping , while the others started geophysical and geological research .
During the International Geophysical Year ( 1957 -- 1958 ) , year - round stations were established in Queen Maud Land by Norway , the Soviet Union , Belgium and Japan .
The Norway expedition continued with topographical mapping , while the others started geophysical and geological research .
During the International Geophysical Year ( 1957 -- 1958 ) , year - round stations were established in Queen Maud Land by Norway , the Soviet Union , Belgium and Japan .