Triton's Geyser-Like Plumes: Discovery and Basic Characterization

@article{Soderblom1990TritonsGP,
  title={Triton's Geyser-Like Plumes: Discovery and Basic Characterization},
  author={Laurence A. Soderblom and Susan W. Kieffer and T. L. Becker and R. Hamilton Brown and Allan F. Cook and C. Hansen and Torrence V. Johnson and Randolph L. Kirk and Eugene Merle Shoemaker},
  journal={Science},
  year={1990},
  volume={250},
  pages={410 - 415}
}
At least four active geyser-like eruptions were discovered in Voyager 2 images of Triton, Neptune's large satellite. The two best documented eruptions occur as columns of dark material rising to an altitude of about 8 kilometers where dark clouds of material are left suspended to drift downwind over 100 kilometers. The radii of the rising columns appear to be in the range of several tens of meters to a kilometer. One model for the mechanism to drive the plumes involves heating of nitrogen ice… 

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Because Triton's southern hemisphere is nearing a maximum summer solstice, insolation as a driver or a trigger for Tritons' geyser-like plumes is an attractive hypothesis and Trapping of solar radiation in a translucent, low-conductivity surface layer (in a solid-state greenhouse) could provide the required energy.

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Energy Sources for Triton's Geyser-Like Plumes

TLDR
Because Triton's southern hemisphere is nearing a maximum summer solstice, insolation as a driver or a trigger for Tritons' geyser-like plumes is an attractive hypothesis and Trapping of solar radiation in a translucent, low-conductivity surface layer (in a solid-state greenhouse) could provide the required energy.

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THE encounter of the Voyager 2 spacecraft with Neptune's satellite Triton revealed many 'dark' (about 10–20% darker than the adjacent frost) surface streaks in Triton's southern hemisphere1,

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