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Frey et al. 1999

Frey, H., Sakimoto, S.E.H. and Roark, J.H. (1999). Discovery of a 450 km diameter, multi-ring basin on Mars through analysis of MOLA topographic data. Geophysical Research Letters 26: doi: 10.1029/1999GL900357. issn: 0094-8276.

Mars Orbiter Laser Altimeter (MOLA) topographic data have revealed a previously unknown, 450 km wide, 2 km deep basin centered at 30N, 312W near the Phison Rupes. This basin, as large as and deeper than the obvious Cassini impact basin located 1000 km to the SW, is not apparent in the existing but good quality Viking imagery. Gridded MOLA data show the feature as a closed-depression. Based on analysis of slope breaks readily visible in two MOLA profiles, we suggest this Phison Rupes Basin has three topographic rings with diameters approximately 350, 455 and 670 km. These rings outline a region of lower impact crater density and smoother inter-crater plains. Similar previously unknown features may exist elsewhere on Mars, and MOLA topographic data may be able to locate them. ¿ 1999 American Geophysical Union

BACKGROUND DATA FILES

	Abstract

Keywords
Planetology, Solid Surface Planets, Impact phenomena (includes cratering), Planetology, Solar System Objects, Mars, Planetology, Solid Surface Planets, General or miscellaneous

Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/

Publisher
American Geophysical Union
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