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THEMIS observes possible cave skylights on Mars

Cushing, G.E. and Titus, T. N. and Wynne, J. J. and Christensen, P. R. (2007) THEMIS observes possible cave skylights on Mars. Geophysical Research Letters, 34. L17201. ISSN 1944-8007

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Publisher’s or external URL: http://dx.doi.org/10.1029/2007GL030709

Abstract

Seven possible skylight entrances into Martian caves were observed on and around the flanks of Arsia Mons by the Mars Odyssey Thermal Emission Imaging System (THEMIS). Distinct from impact craters, collapse pits or any other surface feature on Mars, these candidates appear to be deep dark holes at visible wavelengths while infrared observations show their thermal behaviors to be consistent with subsurface materials. Diameters range from 100 m to 225 m, and derived minimum depths range between 68 m and 130 m. Most candidates seem directly related to pitcraters, and may have formed in a similar manner with overhanging ceilings that remain intact.

Item Type: Article
Publisher’s Statement: ©2007. American Geophysical Union. All Rights Reserved.
ID number or DOI: 10.1029/2007GL030709
Keywords: emplacement; IMAGING systems; INFRARED imaging; Martian surface analysis; mission; morphology; planets; Tharsis
Subjects: Q Science > QB Astronomy
NAU Depositing Author Academic Status: Faculty/Staff
Department/Unit: College of Engineering, Forestry, and Natural Science > Biological Sciences
Date Deposited: 12 Oct 2015 17:55
URI: http://openknowledge.nau.edu/id/eprint/731

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