Modes of sediment transport in channelized water flows with ramifications to the erosion of the Martian outflow channels

Details Modes of sediment transport in channelized water flows with ramifications to the erosion of the Martian outflow channels Modes of sediment transport in channelized water flows with ramifications to the erosion of the Martian outflow channels

Jun 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980icar...42..317k&link_type=abstract

Icarus, vol. 42, June 1980, p. 317-329.

Computer Science

66

Channel Flow, Gravitational Effects, Mars Surface, Sediment Transport, Transport Properties, Water Flow, Beds (Geology), Erosion, Flow Velocity, Planetary Gravitation, Planetology, Solid Suspensions, Mars, Channels, Flows, Sediment, Transport, Water, Erosion, Earth, Grain Size, Gravity, Velocity, Analysis, Density, Comparisons, Basalts, Quartz, Volcanic Ash, Parameters, Concentrations, Models

Scientific paper

The 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.

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