Formation of Martian Gullies by the Action of Liquid Water Flowing Under Current Martian Environmental Conditions

@article{Heldmann2005FormationOM,
  title={Formation of Martian Gullies by the Action of Liquid Water Flowing Under Current Martian Environmental Conditions},
  author={Jennifer L Heldmann and Owen Brian Toon and Wayne H. Pollard and Michael T Mellon and John Pitlick and Christopher P. McKay and Dale T. Andersen},
  journal={Journal of Geophysical Research},
  year={2005},
  volume={110}
}
[1] Geomorphic evidence suggests that recent gullies on Mars were formed by fluvial activity. The Martian gully features are significant because their existence implies the presence of liquid water near the surface on Mars in geologically recent times. Irrespective of the ultimate source of the fluid carving the gullies, we seek to understand the behavior of this fluid after it reaches the Martian surface. We find that contrary to popular belief, the fluvially carved Martian gullies are… 

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References

SHOWING 1-10 OF 50 REFERENCES

Formation of recent martian gullies through melting of extensive water-rich snow deposits

It is shown that gullies can form by the melting of water-rich snow that has been transported from the poles to mid-latitudes during periods of high obliquity within the past 105 to 106 years.

Role of aquicludes in formation of Martian gullies

Liquid water is not currently stable on the surface of Mars, but images provided by the Mars Orbiter Camera aboard the Mars Global Surveyor spacecraft reveal erosional landforms previously

Recent gullies on Mars and the source of liquid water

Geologic features resembling terrestrial water-carved gullies imply that liquid water has flowed recently on the surface of Mars and challenge our views of the present-day low-temperature

Formation of Recent Martian Debris Flows by Melting of Near-Surface Ground Ice at High Obliquity

It is shown that these gullies on Mars may result from the melting of water ice in the top few meters of the martian subsurface at high obliquity, and that above-freezing temperatures can occur in the near surface of Mars, but are only predicted at latitudes and for slope orientations corresponding to where the gullies have been observed on Mars.

Cryovolcanism and the Recent Flow of Liquid Water on Mars

Abstract The surface of Mars is too cold and dry to permit stable liquid water, yet fresh, apparently water-carved gullies and seepage features have been identified in high-resolution imaging of

Liquid CO2 breakout and the formation of recent small gullies on Mars

We show that the action of a CO2 suspended flow could have produced the recent small gullies on Mars, and, hence, that liquid water is not required. The model involves the build‐up of a liquid‐CO2

Geologic settings of Martian gullies: Implications for their origins

[1] Martian gullies are found on steep slopes of all origins, on all sorts of terrains of all ages, scattered across nearly all of Mars. Gullies are observed on all manner of substrates (layered,

On the possibility of liquid water on present‐day Mars

Using a validated general circulation model, we determine where and for how long the surface pressure and surface temperature on Mars meet the minimum requirements for the existence of liquid water

Stability of streams and lakes on Mars