2020年8月
Radar Sounding of Subsurface Structure in Eastern Coprates and Capri Chasmata, Mars
GEOPHYSICAL RESEARCH LETTERS
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- 巻
- 47
- 号
- 16
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1029/2020GL088556
- 出版者・発行元
- AMER GEOPHYSICAL UNION
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 similar to 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 similar to 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.
- リンク情報
- ID情報
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- DOI : 10.1029/2020GL088556
- ISSN : 0094-8276
- eISSN : 1944-8007
- Web of Science ID : WOS:000566245300065