RBV Icefield

Part of a 40-meter panchromatic return beam vidicon (RBV) image (annotated) from Landsat 3, acquired on 5 July 1980 (WRS-1 Path 68 Row 17, subscene C), showing glaciers in Alaska’s Chitina River Valley near the Canadian border. Note the RBV réseau marks (small crosses) imbedded in the image.