Dunes on Pluto

@article{Telfer2018DunesOP,
  title={Dunes on Pluto},
  author={Matt W. Telfer and Eric Ribeiro Parteli and Jani Radebaugh and Ross A. Beyer and Tanguy Bertrand and François Forget and Francis Nimmo and William M. Grundy and Jeffrey M. Moore and S. Alan Stern and John R. Spencer and Tod R. Lauer and Alissa M. Earle and Richard P. Binzel and H. Weaver and Cathy B. Olkin and Leslie A. Young and Kimberly Ennico and Kirby D. Runyon},
  journal={Science},
  year={2018},
  volume={360},
  pages={992 - 997}
}
Methane ice dunes on Pluto Wind-blown sand or ice dunes are known on Earth, Mars, Venus, Titan, and comet 67P/Churyumov-Gerasimenko. Telfer et al. used images taken by the New Horizons spacecraft to identify dunes in the Sputnik Planitia region on Pluto (see the Perspective by Hayes). Modeling shows that these dunes could be formed by sand-sized grains of solid methane ice transported in typical Pluto winds. The methane grains could have been lofted into the atmosphere by the melting of… 

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References

SHOWING 1-10 OF 68 REFERENCES

Observed glacier and volatile distribution on Pluto from atmosphere–topography processes

The model predicts N2 ice accumulation in the deepest low-latitude basin and the threefold increase in atmospheric pressure that has been observed to occur since 1988, and points to atmospheric–topographic processes as the origin of Sputnik Planitia’s N2 glacier.

Surface compositions across Pluto and Charon

The New Horizons team presents the complex surface features and geology of Pluto and its large moon Charon, including evidence of tectonics, glacial flow, and possible cryovolcanoes, as well as their analysis of the encounter data downloaded so far.

The geology of Pluto and Charon through the eyes of New Horizons

Nasa’s New Horizons spacecraft has revealed a complex geology of Pluto and Charon, including evidence of tectonics, glacial flow, and possible cryovolcanoes, and these findings massively increase the understanding of the bodies in the outer solar system.

The atmosphere of Pluto as observed by New Horizons

The New Horizons team presents the complex surface features and geology of Pluto and its large moon Charon, including evidence of tectonics, glacial flow, and possible cryovolcanoes, and their analysis of the encounter data downloaded so far.

Giant ripples on comet 67P/Churyumov–Gerasimenko sculpted by sunset thermal wind

Significance The recent approach to comet 67P/Churyumov–Gerasimenko by the spacecraft Rosetta has revealed the presence of astonishing dune-like patterns. How can the radial outgassing, caused by

Vigorous convection as the explanation for Pluto's polygonal terrain.

A parameterized convection model is reported to compute the Rayleigh number of the N2 ice and show that it is vigorously convecting, making Rayleigh-Bénard convection the most likely explanation for these polygons on Pluto.

The Pluto system: Initial results from its exploration by New Horizons

The New Horizons encounter revealed that Pluto displays a surprisingly wide variety of geological landforms, including those resulting from glaciological and surface-atmosphere interactions as well as impact, tectonic, possible cryovolcanic, and mass-wasting processes.

Penitentes as the origin of the bladed terrain of Tartarus Dorsa on Pluto

Simulations, based upon a recent model representing conditions on Pluto, show that deepening penitentes reproduce both the tri-modal (north–south, east–west and northeast–southwest) orientation and the spacing of the ridges of this bladed terrain.
...