GPS profile Troll Station - South Pole

Complete, kinematic GPS profile along the route of the Norwegian-U.S. IPY traverse of East Antarctica, from Troll Station to 'Camp Winter' at -86,8S, 54,4E, from the South Pole (-90, 0) back to Troll Station across the Recovery Lakes region, and static GPS measurements of snow stakes at selected locations along the route. Instruments: Trimble R7 and Trimble 5700 dual-frequency geodetic receivers with Zephyr Geodetic antennas set at 5 sec logging intervals, with Terrapos post-processing allowing high-level accuracy without base stations. The scientific objectives are to investigate surface topography and dynamics of the ice sheet, determine the spatial variability of the surface topography, validate remote sensing data, determine local topography around drill sites and to determine flow vectors at drill sites. Some of the stakes have been revisited, and some new stakes have been positioned.