Nature research paper: Martian dunes indicative of wind regime shift in line with end of ice age
value of those in the Zhurong landing zone is slightly smaller, only about 5–6, which corresponds to small bright barchans. TARs with 11), indicating that they are discontinuous or widely spaced.
Among the 2,262 bright barchans, 1,096 modified dunes can be identified from HiRIC and HiRISE images. Longitudinal dunes are developed on their western horns and a tip tail formed on their eastern horns. Among these, 500 significantly modified dunes were selected for detailed analysis. The orientations of longitudinal dunes and tip tails on the western and eastern horns of these selected dunes were analysed. The minimum, maximum and average orientations of the longitudinal dunes are 290.
The morphometric parameters of these dunes have been measured using 3d Max. The areas of bright barchans are in the 131–435 mrange. The crestline length range is 29.0–66.1 m, the down wind length 8.0–11.7 m. with heights of 0.5–1.0 m, representing individual examples of medium to large dunes around the landing site. The north slopes and south slopes of the five dunes range from 7.9 to 11.9° and 9.5 to 13.
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