Speed of Petermann Gletscher for the 2005/06 period from RadarSat interferometry (Joughin et al., 2010). Symbols indicate dual frequency GPS position. Black line near lower center across the glacier indicates the grounding zone.

Speed of Petermann Gletscher for the 2005/06 period from RadarSat interferometry (Joughin et al., 2010). Symbols indicate dual frequency GPS position. Black line near lower center across the glacier indicates the grounding zone.