Martian Topography: Large-Scale Variations

Science  14 Nov 1969:
Vol. 166, Issue 3907, pp. 862-865
DOI: 10.1126/science.166.3907.862


The variation in carbon dioxide abundances detected in the 1.05-micron band over small, discrete areas on Mars indicates that larger-scale topographical differences are present than had previously been believed. Spectroscopic mapping of the surface also indicates no apparent correlation between albedo and height; the results are in good agreement with topographical data derived from the range-gated rodar scan along +21°N. High and low areas are found in both the major equatorial maria and the bright deserts in the northern hemisphere.