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Visual and infrared observations of wind streaks on MarsGlobal correlations of the regions in which three Martian wind streak types (bright, dark, splotch-related) vary according to latitude, elevation, albedo, color, and predawn residual temperature provide constraints on models of streak formation and modification. Bright streaks are relatively stable and occur over a wide range of geographical surfaces. They are elevation-independent, suggesting that their formation is due to atmospheric dust fallout. Dark streaks appear variable from 20 to 40 deg S and at elevations between 3 and 7 km. They are associated with dark surfaces, having high thermal inertias. Splotch-related streaks occur at elevations between 0 and 6 km and at areas of either low or high thermal inertias, which is the cause of its modifying surface winds. Data are graphically presented, and the methods of data collection are fully explained. Regional studies of various types of streaks in Syrtis Major, Syria Planum, Oxia Palus, Mesogea and Pettit Craters, and Noachis confirm that the correlations found at the global level also occur at regional scales.
Document ID
19810053553
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Peterfreund, A. R.
(Arizona State University Tempe, AZ, United States)
Date Acquired
August 11, 2013
Publication Date
February 1, 1981
Publication Information
Publication: Icarus
Volume: 45
Subject Category
Lunar And Planetary Exploration
Accession Number
81A37957
Funding Number(s)
CONTRACT_GRANT: NSG-7548
Distribution Limits
Public
Copyright
Other

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