Sastrugi sea ice than on multiyear ice. First-year ice is smoother than multiyear ice, which allows the wind to pass uniformly over the surface without topographic obstructions. Except during the melt season, snow is dry and light in climates cold enough for sea ice, allowing the snow to be easily blown and create sastrugi parallel to the wind direction. The locations of sastrugi are fixed by March in the northern hemisphere and may be linked to the formation of melt ponds. Melt ponds are more likely to form in the depressions between zastrugi on first-year ice. Sastrugi Sastrugi, or zastrugi, are
Surface wave detection by animals source, the less arc angle will be measured in the distance between the neuromasts). However, there is no evidence of a neural circuit that performs this calculation, and other researchers suggest that the distance between any pair of surface wave neuromasts is too small ("A lineatus’s" head is only 1 cm wide) for the calculation to be made accurately, and then at distances from the stimulus less than 7 cm. The accuracy predicted by a time-difference mechanism (using triangulation of the wave source based on curvature of wave front) doesn’t match actual accuracy. Additionally it has been shown that if