The paper considers Mariner 9 and Viking data that contradict Kuzmin's (1975) hypothesis that all crater-associated wind streaks on Mars are depositional and consist of unresolved barchan-like dunes. According to Kuzmin's hypothesis, any streak can appear either bright or dark relative to its surroundings depending on the sun's position. The spacecraft images, however, show examples of dark and light streaks visible at the same azimuth angle of the sun. Evidence that bright and dark streaks differ both in morphology and in character is considered. It is suggested that the common ragged dark streaks are probably erosion scars while most bright streaks probably represent accumulations of bright dust-storm fallout.


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    Title :

    On the nature and visibility of crater-associated streaks on Mars


    Contributors:
    Veverka, J. (author) / Thomas, P. (author) / Sagan, C. (author)

    Published in:

    Publication date :

    1978-10-01


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




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