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Modes of sediment transport in channelized water flows with ramifications to the erosion of the Martian outflow channelsThe paper discusses application to Martian water flows of the criteria that determine which grain-size ranges are transported as bed load, suspension, and wash load. The results show nearly all sand-sized material and finer would have been transported as wash load and that basalt pebbles and even cobbles could have been transported at rapid rates of suspension. An analysis of the threshold of sediment motion on Mars further indicates that the flows would have been highly competent, the larger flows having been able to transport boulder-sized material. Comparisons with terrestrial rivers which transport hyperconcentration levels of sediments suggest that the Martian water flows could have achieved sediment concentrations up to 70% in weight. Although it is possible that flows could have picked up enough sediment to convert to pseudolaminar mud flows, they probably remained at hyperconcentration levels and fully turbulent in flow character.
Document ID
19800061637
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Komar, P. D.
(Oregon State University Corvallis, Ore., United States)
Date Acquired
August 10, 2013
Publication Date
June 1, 1980
Publication Information
Publication: Icarus
Volume: 42
Subject Category
Lunar And Planetary Exploration
Accession Number
80A45807
Funding Number(s)
CONTRACT_GRANT: NSG-7178
Distribution Limits
Public
Copyright
Other

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