Mars elevation distribution
Abstract
A Digital Terrain Model (DTM) of Mars was derived with both Mercator and Sinusoidal EqualArea projections from the global topographic map of Mars (scale 1:15 million, contour interval 1 km). Elevations on the map are referred to Mars' topographic datum that is defined by the gravity field at a 6.1millibar pressure surface with respect to the center of mass of Mars. The DTM has a resolution at the equator of 1/59.226 degrees (exactly 1 km) per pixel. By using the DTM, the volumetric distribution of Mars topography above and below the datum has previously been calculated. Three types of elevation distributions of Mars' topography were calculated from the same DTM: (1) the frequency distribution of elevations at the pixel resolution; (2) average elevations in increments of 6 degrees in both longitude and latitude; and (3) average elevations in 36 separate blocks, each covering 30 degrees of latitude and 60 degrees of longitude.
 Publication:

A Bibliography of Planetary Geology and Geophysics Principal Investigators and their Associates, 1990  1991
 Pub Date:
 June 1991
 Bibcode:
 1991pggp.rept..506W
 Keywords:

 Digital Data;
 Elevation;
 Mars Surface;
 Mathematical Models;
 Mercator Projection;
 Relief Maps;
 Sine Waves;
 Terrain Analysis;
 Topography;
 Frequency Distribution;
 Planetary Geology;
 Lunar and Planetary Exploration