Arid
DOI10.1016/j.pss.2013.05.019
The high elevation Dry Valleys in Antarctica as analog sites for subsurface ice on Mars
Heldmann, J. L.1; Pollard, W.2; McKay, C. P.1; Marinova, M. M.1,3; Davila, A.1,4; Williams, K. E.1,5; Lacelle, D.6; Andersen, D. T.4
通讯作者Heldmann, J. L.
来源期刊PLANETARY AND SPACE SCIENCE
ISSN0032-0633
出版年2013
卷号85页码:53-58
英文摘要

The high elevation valleys of the McMurdo Dry Valleys of Antarctica are the only locations on Earth known to contain dry permafrost. The Dry Valleys are a hyper-arid polar desert environment and above 1500 m elevation, air temperatures do not exceed 0 degrees C and thus, similarly to Mars, liquid water is largely absent and instead the hydrologic cycle is dominated by frozen ice and vapor phase processes such as sublimation. These conditions make the high elevation Dry Valleys a key Mars analog location where periglacial processes and geomorphic features, and their use as a diagnostic for subsurface ice, can be studied in situ. Two valleys in the upper Dry Valleys show a diversity of subsurface ice; University Valley is dominated by dry permafrost overlying ice-cemented to ice-bonded ground and nearby middle Beacon Valley is dominated by massive ground ice. In both cases the ice is 10-60 cm below the surface. Here we compare the surface features in these two valleys to assess any correlation with the nature of the subsurface ice and compare these features to similar features seen at the Phoenix landing site on Mars. We conclude that while surface features may be indicative of ground ice, no specific correlations are possible and more direct methods are required to determine the nature of subsurface ice on Mars. (C) 2013 Published by Elsevier Ltd.


英文关键词Ice Mars Polar regions Antarctica Drilling
类型Article
语种英语
国家USA ; Canada
收录类别SCI-E
WOS记录号WOS:000324364100005
WOS关键词SOUTHERN VICTORIA LAND ; ROCK TEMPERATURE DATA ; MIOCENE GLACIER ICE ; BEACON VALLEY ; GROUND ICE ; LOW RATES ; SUBLIMATION ; PERMAFROST ; STABILITY ; SURFACE
WOS类目Astronomy & Astrophysics
WOS研究方向Astronomy & Astrophysics
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/179251
作者单位1.NASA, Ames Res Ctr, Div Space Sci, Moffett Field, CA 94035 USA;
2.McGill Univ, Dept Geog, Montreal, PQ H3A 2T5, Canada;
3.BAER Inst, West Sonoma, CA 95476 USA;
4.SETI Inst, Mountain View, CA 94041 USA;
5.Montana State Univ, Dept Earth Sci, Bozeman, MT 59717 USA;
6.Univ Ottawa, Dept Geog, Ottawa, ON K1N 6N5, Canada
推荐引用方式
GB/T 7714
Heldmann, J. L.,Pollard, W.,McKay, C. P.,et al. The high elevation Dry Valleys in Antarctica as analog sites for subsurface ice on Mars[J],2013,85:53-58.
APA Heldmann, J. L..,Pollard, W..,McKay, C. P..,Marinova, M. M..,Davila, A..,...&Andersen, D. T..(2013).The high elevation Dry Valleys in Antarctica as analog sites for subsurface ice on Mars.PLANETARY AND SPACE SCIENCE,85,53-58.
MLA Heldmann, J. L.,et al."The high elevation Dry Valleys in Antarctica as analog sites for subsurface ice on Mars".PLANETARY AND SPACE SCIENCE 85(2013):53-58.
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