Comparison of surface texture around BAB01 and BAB02 between early October 2014 and late March 2015. a) Smooth dust deposits were prevalent over the area on October 4, 2014. b) Honeycombs were observed on March 28, 2015. c), d) Images taken respectively on December 30, 2014, and February 14, 2015, show changes occurring on the perimeter of BAB02. The Sun is projected onto the lower left of the image plane in (c), (d). Some newly-formed depressions are indicated by red arrows. The surface texture within the rectangle of dashed red outline is rougher in the latter image. Yellow arrows indicate common boulder-like features as landmarks. The observation in (a) was taken at the phase angle of 96◦ with the pixel resolution of 0.32 m. b) was taken at a smaller phase angle of 42◦, but with a higher resolution of 0.24 m per pixel. c) was taken at the phase angle of 94◦ with the pixel resolution of 0.49 m. d) was taken at the phase angle of 78◦ with the pixel resolution of 0.57 m (Table A.1). Nomenclature is as in Table 1.
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