Bottom of an Arctic sea ice floe without melt-water layers. Note the undulating structure of ridges and depressions on scales of about 20cm typical for the period of summer melt. Image courtesy of Arctic Exploration 2002, Rolf Gradinger, NOAA/OER.
Bottom of an Arctic sea ice floe without melt-water layers. Note the undulating structure of ridges and depressions on scales of about 20cm typical for the period of summer melt. Image courtesy of Arctic Exploration 2002, Rolf Gradinger, NOAA/OER.