Lab and Martian Razorbacks (IMAGE)

American Physical Society

Lab and Martian Razorbacks

Caption

(a) Experimental flow consisting of a cascading stream of art sand bounded by razorbacks. The scale bar is about 10 cm long. (b) Immediately after flow has stopped, the bed remains active, ejecting individual grains with high velocity (curved streaks in boxed region are individual grains). (c) Photo from the NASA rover Opportunity, obtained on its mission in Meridiani Planum.

Credit

Photo credit: NASA/JPL/Cornell. For scale, the spherical concretions scattered throughout the snapshot are about 4 mm in diameter.<P> Troy Shinbrot, Keirnan LaMarche, and Benjamin J. Glasser, PRL 96, 178002 (2006)

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