Abstract
Radar measurements from Chryse Planitia in 1978 confirm earlier estimates of 4°–5° rms slope (on meter scales) over 45°–50°W longitude. The new measurements also confirm a skewing of the measured spectra. This has now been interpreted as a combined result of large‐scale surface tilt and a side effect of the decrease in small‐scale roughness as the subradar point moves from the basin floor toward the west.
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