@article{0b0e445c3a644b86bab2a24464ba063f,
title = "Valley Networks and the Record of Glaciation on Ancient Mars",
abstract = "The lack of evidence for large-scale glacial landscapes on Mars has led to the belief that ancient glaciations had to be frozen to the ground. Here we propose that the fingerprints of Martian wet-based glaciation should be the remnants of the ice sheet drainage system instead of landforms generally associated with terrestrial ice sheets. We use the terrestrial glacial hydrology framework to interrogate how the Martian surface gravity affects glacial hydrology, ice sliding, and glacial erosion. Taking as reference the ancient southern circumpolar ice sheet that deposited the Dorsa Argentea formation, we compare the theoretical behavior of identical ice sheets on Mars and Earth and show that, whereas on Earth glacial drainage is predominantly inefficient, enhancing ice sliding and erosion, on Mars the lower gravity favors the formation of efficient subglacial drainage. The apparent lack of large-scale glacial fingerprints on Mars, such as drumlins or lineations, is to be expected.",
keywords = "early Mars, glacial erosion, glacial geomorphology, ice, subglacial hydrology, valley networks",
author = "{Grau Galofre}, A. and Whipple, {K. X.} and Christensen, {P. R.} and Conway, {S. J.}",
note = "Funding Information: The authors would like to thank Professors C. Schoof and G. Clarke, as well as the Christensen, Whipple‐Heimsath, and Conway research groups for insightful discussions. The authors also appreciate the insightful reviews by Professor K. Cuffey and an anonymous reviewer, who significantly improved this manuscript. This project has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sk{\l}okodowska‐Curie grant agreement MGFR 101027900 and from the School of Earth and Space Exploration (ASU) through the Exploration Fellowship. Funding Information: The authors would like to thank Professors C. Schoof and G. Clarke, as well as the Christensen, Whipple-Heimsath, and Conway research groups for insightful discussions. The authors also appreciate the insightful reviews by Professor K. Cuffey and an anonymous reviewer, who significantly improved this manuscript. This project has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sk{\l}okodowska-Curie grant agreement MGFR 101027900 and from the School of Earth and Space Exploration (ASU) through the Exploration Fellowship. Publisher Copyright: {\textcopyright} 2022 The Authors.",
year = "2022",
month = jul,
day = "28",
doi = "10.1029/2022GL097974",
language = "English (US)",
volume = "49",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "American Geophysical Union",
number = "14",
}