Mathematics – Logic
Scientific paper
Apr 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981natur.290..759l&link_type=abstract
Nature, vol. 290, Apr. 30, 1981, p. 759-763.
Mathematics
Logic
23
Channel Flow, Ice, Mars Surface, Planetary Evolution, Earth Surface, Erosion, Landforms, Morphology, Terrain Analysis, Mars, Channels, Ice, Terrain, Origin, Comparisons, Hypotheses, Water, Erosion, Morphology, Photographs, Grooves, Kasei Vallis, Masa Vallis, Lunar Planum, Margaritifer Sinus, Chryse Planitia, Features, Earth
Scientific paper
Outflow channels on Mars are long sinuous linear depressions that occur mostly in the equatorial area (+ or - 30 deg latitude). They differ from small valley networks by being larger and arising full-born from chaotic terrains. Outflow channels resemble terrestrial stream beds, and their origin has generally been attributed to water in catastrophic floods or mudflows. The problem of channel origin is examined here from the perspective of erosional characteristics and the resultant landforms created by former and present-day ice streams and glaciers on earth. From morphologic comparisons, an ice-stream origin seems equally well suited to explain the occurrences and form of the outflow channels on Mars, and in contrast with the hydraulic hypothesis, ice streams and ice sheets produce terrestrial features of the same scale as those observed on Mars.
Anderson Donald M.
Lucchitta Baerbel Koesters
Shoji Hitoshi
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