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Evidence of Ice‐Rich Layered Deposits in the Medusae Fossae Formation of Mars
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Abstract
Subsurface reflectors in radar sounder data from the Mars Advanced Radar for Subsurface and Ionospheric Sounding instrument aboard the Mars Express spacecraft indicate significant dielectric contrasts between layers in the Martian Medusae Fossae Formation (MFF). Large density changes that create dielectric contrasts are less likely in deposits of volcanic ash, eolian sediments, and dust, and compaction models show that homogeneous fine‐grained material cannot readily account for the inferred density and dielectric constant where the deposits are more than a kilometer thick. The presence of subsurface reflectors is consistent with a multi‐layer structure of an ice‐poor cap above an ice‐rich unit analogous to the Martian Polar Layered Deposits. The volume of an ice‐rich component across the entire MFF below a 300–600 m dry cover corresponds to a global equivalent layer of water of ∼1.5 to ∼2.7 m or ∼30%–50% of the total estimated in the North Polar cap.
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In the Martian Medusae Fossae Formation, the volume of an ice-rich component below a 300-600 m dry cover corresponds to a global equivalent layer of water of ~1.5 to ~2.7 m or ~30%-50% of the total estimated in the North Polar cap.
“The Martian Medusae Fossae Formation, which located in the equatorial region of Mars, the volume of an ice-rich component below a 300-600 m dry cover corresponds to a global equivalent layer of water of ~1.5 to ~2.7 m or ~30%-50% of the total estimated in the North Polar cap. 87”
From Energy system and resource utilization in space: A state-of-the-art review (2024) · cites this paper as [87]
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Metadata
- Authors
- Watters, T. R., Campbell, B. A., Leuschen, C. J., Morgan, G. A., Cicchetti, A., Orosei, R., & Plaut, J. J.
- Affiliations
- Center for Earth and Planetary Studies National Air and Space Museum Smithsonian Institution Washington DC USA
- Smithsonian Institution (US)
- Planetary Science Institute (US)
- Institute for Space Astrophysics and Planetology (IT)
- California Institute of Technology (US)
- Venue
- Geophysical Research Letters
- Publisher
- American Geophysical Union (AGU)
- Published
- 2024-01-23
- Volume
- 51
- Issue
- 2
- ISSN
- 0094-8276 (ISSN-L)
- 1944-8007
- OpenAlex
- W4391133655
- Cited by
- 42
- References
- 50
- Citations by year
- 2026: 14 · 2025: 16 · 2024: 12
- FWCI
- 7.91
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Geophysical Research Letters (publishedVersion, cc-by-nc-nd)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- National Aeronautics and Space Administration
- European Space Agency
- Agenzia Spaziale Italiana
- Topics
- Physical Sciences › Earth and Planetary Sciences › Space and Planetary Science › Planetary Science and Exploration
- Physical Sciences › Earth and Planetary Sciences › Space and Planetary Science › Astro and Planetary Science
- Physical Sciences › Earth and Planetary Sciences › Geophysics › Geophysical Methods and Applications
- Keywords
- Medusae Fossae Formation, dielectric contrast, Mars subsurface, Martian polar layered deposits, water volume estimation, Mars polar caps
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Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
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