THEMIS observes possible cave skylights on Mars

被引：116
作者：
Cushing, G. E.
Titus, T. N.
Wynne, J. J.
Christensen, P. R.
机构：
[1] US Geol Survey, Astrogeol Team, Flagstaff, AZ 86001 USA
[2] Arizona State Univ, Dept Geol Sci, Tempe, AZ 85287 USA
[3] No Arizona Univ, Dept Biol Sci, Flagstaff, AZ 86011 USA
[4] No Arizona Univ, Dept Phys & Astron, Flagstaff, AZ 86011 USA
来源：
GEOPHYSICAL RESEARCH LETTERS | 2007年 / 34卷 / 17期
关键词：
D O I：
10.1029/2007GL030709
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
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.
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页数：5
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