i-got-u GPS waypoints delineating low-altitude transects over the Arctic Network of national park units and Selawik National Wildlife Refuge, Alaska, July 2013

GPS waypoints delineating the flight paths for low altitude transects from a i-got-u GPS unit. Transects were conducted from small aircraft over the National Park Service’s Arctic Network (Bering Land Bridge National Preserve, Cape Krusenstern National Monument, Gates of the Arctic National Park and Preserve, Kobuk Valley National Park, and Noatak National Preserve) and the U.S. Fish and Wildlife Service’s Selawik National Wildlife Refuge in northwest Alaska. Positions were collected at five second intervals.