PHD scientist Ian Bartholomew's theodolite measuring the speed of the Russell Glacier near Kangerlussuaq, Greenland, Polar Regions

greenland science study climate change global warming glacier glaciation russell glacier glaciology sample sampling melt water research ice solar power remote equipment gps global positioning system tripod theodolite measurement melt melting day outdoors close up close ups thodolite glaciers fieldwork measuring polar regions kangerlussuaq horizontal