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1. Local Dust Lifting
SECTION 1. AEOLIAN ACTIVITY
1. Local Dust Lifting

Martian winds are presently redistributing dust particles. Shown are what are probably plumes of dust being raised by northerly winds from the surface of a series of old volcanic flows. The plumes are huge, up to 20 km long and 1 km high, similar in size to some terrestrial dust plumes. (Location: Latitude –21°, Longitude 117.5°, in southern Syria Planum.

Viking photograph 056A24, NGF orthographic version, clearfilter. See Appendix for an explanation of Mars photograph nomenclature.)

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