Experiments and analyses of the formation of erosional scour marks with implications to the origin of the Martian outflow channels

Details Experiments and analyses of the formation of erosional scour marks with implications to the origin of the Martian outflow channels Experiments and analyses of the formation of erosional scour marks with implications to the origin of the Martian outflow channels

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pggp.rept..322k&link_type=abstract

In NASA, Washington Repts. of Planetary Geol. and Geophys. Program p 322-324 (SEE N85-23474 13-91)

Physics

Landforms, Mars (Planet), Mars Surface, Water Erosion, Reynolds Number, Turbulent Flow, Water Flow

Scientific paper

The objectives of the present study of erosional scour marks on Mars involve flume experiments to examine the details of scour patterns around a variety of obstacle shapes, and to review the engineering literature on the scour around bridge piers to determine whether those results might provide a quantitative evaluation of the flows which formed the scour marks in the outflow channels. The flume experiments completed to date examined the scour which develops around a circular island and around a streamlined island (having a lemniscate shape with length/width = 3.0). The islands themselves are non-erodable solids, but are surrounded by a fine-grained sediment bed. The scour patterns which occur around the circular island agree with those produced by prototype bridge piers and by scale-model piers employed in the engineering studies. The scour patterns around the model streamlined islands correspond extremely well with those seen adjacent to the streamlined islands on Mars, providing still more confirmation for a water-flow origin.

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