Reports

Radar Mapping of Mercury: Full-Disk Images and Polar Anomalies

+ See all authors and affiliations

Science  23 Oct 1992:
Vol. 258, Issue 5082, pp. 640-643
DOI: 10.1126/science.258.5082.640

Abstract

A random-code technique has been used at Arecibo to obtain delay-Doppler radar images of the full disk of Mercury. Anomalously bright features were found at the north and south poles. The north polar feature is oblong (4° by 8°) and offset from the pole. The smaller south polar feature is mostly confined to the floor of the crater Chao Meng-Fu. The polar locations and radar properties of these features indicate that they may be produced by volume scattering in ice. The images also reveal a variety of more subdued reflectivity features ranging in size from hundreds to thousands of kilometers; some of these appear to have an impact origin.

Related Content