The drifting at south pole is rather benign compared to places like Summit Station Greenland. My experiments in Greenland get buried twice as fast as the ones at Pole :)
Basically we're looking for really energetic neutrinos by burying radio antennas (and readout electronics) in the ice. If a really energetic neutrino interacts in the ice, it will produce a particle shower, which, at really high energies (like > 10-100 PeV) will produce detectable radio emission. Since there is lots of ice both in Antarctica and in Greenland, we have detectors in both places.