Extended Data Fig. 1: Morphologic statistics of bright barchans around the Zhurong landing site.
From: Martian dunes indicative of wind regime shift in line with end of ice age
a, the distribution of 2262 bright barchans extracted from HiRIC image, marked by red lines. b, Example of morphometric parameters used to describe the bright barchans. Their morphological parameters include area (region enclosed by green dashed line), the crest-ridge width (W), the “down wind” length (L), crestline length (rL) (denoted by red dashed line) and crest to crest wavelength (λ). c, Frequency distributions of wind direction calculated by referring to crestline orientation. d–g, Frequency distributions of area, downwind length (L), the crest-ridge width (W), and sinuosity(W/rL) of the dunes. h, Frequency distributions of wind direction simulated by GCM with the average solar scenario at the Zhurong landing site. The simulation time range is Mars Years 24 to 31.
