Arid
DOI10.1016/j.pss.2017.02.010
On conductive ground: Analysis of "Bistatic sounding of the deep subsurface with ground penetrating radar - experimental validation" by V. Ciarletti et al.
Grimm, R. E.1; Stillman, D. E.1; Dinwiddie, C. L.2; McGinnis, R. N.2; Sandberg, S. K.
通讯作者Grimm, R. E.
来源期刊PLANETARY AND SPACE SCIENCE
ISSN0032-0633
出版年2017
卷号139页码:51-56
英文摘要

A prototype ground-penetrating radar (GPR) for planetary exploration was tested in the Western Desert of Egypt by Ciarletti et al. (Planet Space Set, 117, 177, 2015), and penetration depths of 200-300 m were reported. However, geoelectrical and electromagnetic soundings performed during the same campaign indicate very low resistivities ( < 10 Omega m) between depths of several meters to a few hundred meters. The local near-surface geology is limestone intercalated with clays. Such conductive ground is impenetrable to GPR, even with very long signal integrations. Indeed, high-conductivity ground causes most of the GPR energy to be radiated above the ground surface. Events in the single GPR time series published by Ciarletti et al. (2015) are most likely echoes from nearby topography and not reflections from subsurface interfaces. The principal lesson of this experiment is that Earth’s hot deserts, which may be good geological analogs to desiccated planetary surfaces, are poor GPR analogs due to the ubiquity of clays, salts, and trace amounts of water.


英文关键词Ground penetrating radar Mars Geoelectrical resistivity
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000399517400006
WOS关键词GPR
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/2XILL650/201496
作者单位1.Southwest Res Inst, Planetary Sci Directorate, Boulder, CO USA;
2.Southwest Res Inst, Space Sci & Engn Div, San Antonio, TX USA
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Grimm, R. E.,Stillman, D. E.,Dinwiddie, C. L.,et al. On conductive ground: Analysis of "Bistatic sounding of the deep subsurface with ground penetrating radar - experimental validation" by V. Ciarletti et al.[J],2017,139:51-56.
APA Grimm, R. E.,Stillman, D. E.,Dinwiddie, C. L.,McGinnis, R. N.,&Sandberg, S. K..(2017).On conductive ground: Analysis of "Bistatic sounding of the deep subsurface with ground penetrating radar - experimental validation" by V. Ciarletti et al..PLANETARY AND SPACE SCIENCE,139,51-56.
MLA Grimm, R. E.,et al."On conductive ground: Analysis of "Bistatic sounding of the deep subsurface with ground penetrating radar - experimental validation" by V. Ciarletti et al.".PLANETARY AND SPACE SCIENCE 139(2017):51-56.
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