Ice Stream B
One of the most studied and interesting ice streams in Antarctica, Ice Stream B shows a number of features that indicate past changes and ongoing evolution. In this subscene the upstream ends of several ice stream shear margins are highlighted. Characteristic crevasse patterns, nicknamed "chromosomes," mark the ends of several of these margin traces. These features have been shown to result from upstream migration of the ice stream. The former research camp, UpB (or "Upstream Bravo"), is visible near the center of the northern branch of the stream (south is up in the image).
NOTE: White and/or blue colors used in the annotations are simply for better contrast against the background and have no other significance.