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The erosion of streamlined islands, longitudinal grooves and scour marks: Implications to the origin of the Martian outflow channelsThe diversity of proposed origins for large Martian outflow channels results from the differing interpretations given to the landforms associated with the outflow channels. In an attempt to help limit the possible mechanisms of channel erosion, detailed studies of three of the channel features were done; the streamlined islands, longitudinal grooves and scour marks. This examination involved a comparison of the martian streamlined islands with various streamlined landforms on Earth including those found in the Channel Scabland in large rivers, glacial drumlins, and desert yardangs. The comparisons included statistical analyses of the landform lengths versus widths and positions of maximum width, and an examination of the degree of shape agreement with the geometric lemniscate which was in turn demonstrated to correspond closely with true airfoil shapes. The analyses showed that the shapes of the martian islands correspond closely to the streamlined islands in rivers and the Channel Scabland land. Drumlins show a much smaller correlation. Erosional rock islands formed by glaciers are very much different in shape.
Document ID
19840015436
Acquisition Source
Legacy CDMS
Document Type
Other - Other
Authors
Komar, P. D.
(Oregon State Univ. Corvallis, OR, United States)
Date Acquired
August 12, 2013
Publication Date
April 1, 1984
Publication Information
Publication: NASA. Washington Rept. of Planetary Geol. Programs
Subject Category
Earth Resources And Remote Sensing
Accession Number
84N23504
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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