Martian Craters and a Scarp as Seen by Radar

Science  24 Dec 1971:
Vol. 174, Issue 4016, pp. 1321-1324
DOI: 10.1126/science.174.4016.1321


Radar observations of Mars with a surface resolution of 1.3° in latitude and 0.8° in longitude have been carried out during the opposition of 1971. With a precision in surface height measurement approaching 75 meters in regions of high reflectivity, it has been possible to measure the detailed characteristics of a number of craters. Many of these can be identified with craters shown in Mariner photographs of Mars. In addition, a scarp has been seen at 41° west, 14° south with an average slope of about 6° extending over about 40 kilometers.