http://www.blackwell-synergy.com/doi/pdf/10.1111/j.1365-246X.2004.02156. x refers to a grid in the 'South Pole Area' oriented to 210 North. I suppose that if this grid is not exactly at the South Pole, '210 North' is definable in the usual way ... and this would be the case if the 'South Pole' referred to is in fact the South Magnetic Pole. On the other hand, the same paper talks about 'Western Antarctica' and 'Eastern Antarctica', apparently defined in (?) the conventional way by the lines of longitude coming in to the S Pole. So 'East of the S Pole' could be Antarcticese for along the '90d East' line of longitude. Indeed, that definitive source Wikipedia, has Dome Argus at 80d 22'S 77d 21'E. http://www.cosis.net/abstracts/EGU2007/04585/EGU2007-J-04585.pdf talks about 'North and East of the South Pole' which seems a good way of differentiating one 'North' from another. I guess the professionals don't include the "North and" in their shorthand when talking to each other. It was Humpty-Dumpty who said "When I use a word, it means exactly what I choose it to mean"? Fortunately, he could not fall off the South Pole as it is at the bottom of the world. Guy