Edited sentence: During the 2010-11 summer field season in Antarctica, tractors and sleds will haul all of the equipment needed to establish a camp near the ice shelf from an established field camp in the region.Over the next two field seasons, 2011-12 and 2012-13, scientists will use helicopters to fly to sites on the ice shelf, where they'll deploy specially designed profilers down through the ice shelf to measure various ocean properties.Since then, the National Science Foundation has decided to establish a helicopter camp for the scientists to safely study the ice-coean interaction that appears to be thinning the ice shelf and allowing the glacier to speed up, contributing to sea-level rise.The tractor train will traverse about 700 kilometers of snow and ice twice in one season to deliver the needed materials