Onset and migration of spiral troughs on Mars revealed by orbital radar

@article{Smith2010OnsetAM,
  title={Onset and migration of spiral troughs on Mars revealed by orbital radar},
  author={I. Smith and J. Holt},
  journal={Nature},
  year={2010},
  volume={465},
  pages={450-453}
}
The landscape of the north polar layered deposits of Mars (NPLD) is dominated by a pinwheel array of enigmatic spiral troughs. The troughs have intrigued planetary scientists since the Mariner 9 spacecraft returned the first close-up image in 1972, but conclusive evidence of their origin has remained elusive. Debate continues regarding all aspects of the troughs, including the possibility that they have migrated, their age in relation to the current NPLD surface, and whether they are… Expand
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