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Aeolian processes on Mars - Erosive velocities, settling velocities, and yellow clouds.Extremely high atmospheric wind velocities are needed to erode particulate matter on Mars. Settling velocities are roughly equivalent to terrestrial settling velocities for clay to fine sand-size particles; suspension transport may be dominant for fine particles on Mars. Yellow clouds suggest that required threshold erosion velocities are reached and that a great deal of fine-grained material is carried in suspension. Yellow cloud origins are concentrated over the southern latitudes and areas of major topographic relief. The cloud distribution pattern suggests that high threshold velocities are attained by transient atmospheric disturbances such as slope winds and dust devils.-
Document ID
19720045128
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Arvidson, R. E.
(Brown University Providence, R.I., United States)
Date Acquired
August 6, 2013
Publication Date
May 1, 1972
Publication Information
Publication: Geological Society of America Bulletin
Volume: 83
Subject Category
Space Sciences
Accession Number
72A28794
Funding Number(s)
CONTRACT_GRANT: NGR-40-002-088
Distribution Limits
Public
Copyright
Other

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