气候变化领域集成服务门户(CCPortal): Radar Sounding of Subsurface Structure in Eastern Coprates and Capri Chasmata; Mars

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DOI	10.1029/2020GL088556
	Radar Sounding of Subsurface Structure in Eastern Coprates and Capri Chasmata; Mars
	Noguchi R.; Ishiyama K.; Kumamoto A.; Uemura C.; Kasaba Y.; Usui T.; Oura A.; Shoji D.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:16
英文摘要	We surveyed the subsurface structure in eastern Coprates and Capri Chasmata in the equatorial region using high-resolution visible images, digital terrain models, and radar sounding data. We identified subsurface reflectors in four areas of the chasmata. At the stratigraphic exposure on the chasmata walls, the corresponding depth of the reflector is ∼60 m. The bulk dielectric constants of the layers above the reflectors are calculated as 3.4–4.0, suggesting a rock-air mixture with ∼39.3% and 46.1% porosity or a rock-air-ice mixture with <21.2% water ice fraction. This high porosity corresponds to nonwelded and unconsolidated sediments emplaced by aeolian, fluvial, and volcanic activities. If water ice actually exists, further studies and discussions are required for the mechanism to maintain it within low latitudes. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Mixtures; Porosity; Radar; Reflection; Stratigraphy; Digital terrain model; Equatorial regions; High porosity; High resolution visible; Radar soundings; Subsurface structures; Unconsolidated sediment; Volcanic activities; Ice; dielectric property; digital terrain model; Mars; planetary surface; porosity; radar; surface structure
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169917
作者单位	Institute of Space and Astronautical Science, Japan Astronautical Exploration Agency, Sagamihara, Kanagawa, Japan; National Institute of Technology, Tsuruoka College, Tsuruoka, Yamagata, Japan; Department of Geophysics, Tohoku University, Sendai, Miyagi, Japan; School of Physical Sciences, Department of Space and Astronautical Science, SOKENDAI (Graduate University for Advanced Studies), Sagamihara, Kanagawa, Japan; Earth-Life Science Institute, Tokyo Institute of Technology, Meguro, Tokyo, Japan
推荐引用方式 GB/T 7714	Noguchi R.,Ishiyama K.,Kumamoto A.,et al. Radar Sounding of Subsurface Structure in Eastern Coprates and Capri Chasmata; Mars[J],2020,47(16).
APA	Noguchi R..,Ishiyama K..,Kumamoto A..,Uemura C..,Kasaba Y..,...&Shoji D..(2020).Radar Sounding of Subsurface Structure in Eastern Coprates and Capri Chasmata; Mars.Geophysical Research Letters,47(16).
MLA	Noguchi R.,et al."Radar Sounding of Subsurface Structure in Eastern Coprates and Capri Chasmata; Mars".Geophysical Research Letters 47.16(2020).