Dynamic glacier or stagnant ice patch? Assessing detection limits of glacier motion in Alaska and western North America

Jacob Downs, USGS Northern Rocky Mountain Science Center, Red Lodge, United States, Daniel McGrath, Colorado State University, Department of Geosciences, Fort Collins, United States, Caitlyn Florentine, USGS Northern Rocky Mountain Science Center, Bozeman, United States and Louis Sass, USGS Alaska Science Center, Anchorage, AK, United States