Additional file 1 of Variation of crater morphological parameters in the landing area of Tianwen-1: relationships with the geological environment and climate change

Additional file 1: Fig. S1. Crater depth raster (1 m per pixel). Depth is calculated by fitting a 3D plain across the rim using the points shown. Each point is assigned an elevation value from the HiRISE DEM. The DEM is then subtracted from the overlying 3D surface. Note: (e) is the 3D representation of (d). Fig. S2. Crater rim height raster (1 m per pixel) with the 0.2D annular region that generally defines the majority of the rim structure for all craters. Rim height is calculated by fitting a plain across the continuous ejecta blanket (1D from crater rim). This 3D plane defines the pre‐ impact surface and is subtracted from the overlying DEM. Note: (g) is the 3D representation of (f). Fig. S3. (a) The low-frequency radar imaging profile, with the uppermost thick black line denoting the topography relative to the landing site. The dashed line above 10 m denotes the estimated bottom of the top layer presumably containing mainly regolith. The two solid lines at depths of around 30 and 80 m represent the contacts between the second and third layers and the base of the third layer, respectively. The two dashed lines at around 10 and 40 m deep roughly separate finer- and coarser-grained rocky blocks within the second and third layers, respectively. (b) The interpreted lithologic stratigraphy based on radar imaging. (c) The variation of dielectric permittivity with depth. (Image credit: Chao Li et al.; 2022, Nature).