Sastrugi dunes, and the resulting drifting snow shapes are also popularly referred to as "barchans". Inuit of Canada call them "kalutoqaniq". When winds slacken, the drifted formations consolidate via sublimation and recrystallization. Subsequent winds erode kalutoqaniq into the sculptured forms of sastrugi. Inuit call large sculpturings "kaioqlaq" and small ripples "tumarinyiq". Further erosion may turn "kaioqlaq" back into drifting "kalutoqaniq". An intermediate stage of erosion is "mapsuk", an overhanging shape. On the windward side of a ridge, the base erodes faster than the top, producing a shape like an anvil tip pointing upwind. Sastrugi are more likely to form on first-year
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