Unused before now, these Viking stereo data were reexamined in order to determine the thickness and volume of these deposits. The Viking data also fill an expected gap in the MOLA data south of 86 S latitude, which includes part of the residual ice deposits. Views of the Mars Polar Dome and the Mars Polar Lander Landing Zone Figure 2 3-D stereo view of the south polar cap of Mars. Figure 3 3-D stereo view of part of the MPL landing site. Images obtained in martian spring.
Bright patches are carbon dioxide frost.
These frost deposits, while confusing in monoscopic images, provide high-contrast patterns that facilitate topographic discrimination in stereo analyses. Figure 4 3-D stereo view of the Mars Polar Lander landing site region. These images were obtained in the frost-free martian southern summer. From these stereo views, Schenk and Moore were able to construct topographic relief maps of the south polar region using computer software designed at LPI to extract topography from stereo data. These maps have spatial resolutions of 1.5 to 3 kilometers and vertical resolutions of 80 to 160 meters.