title: Martian topography: large-scale variations.
abstract: 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 degrees N. High and low areas are found in both the major equatorial maria and the bright deserts in the northern hemisphere.
authors.forename: R A
authors.initials: RA
authors.lastname: Wells