Global warming on Triton

Elliot, J. L.; Hammel, Heidi B.; Wasserman, L. H.; Franz, O. G.; McDonald, S. W.; Olkin, C. B.; Dunham, E. W.; Spencer, J. R.; Stansberry, J.; Buie, M. W.; Pasachoff, Jay M.; Babcock, B. A.; McConnochie, T. H.

doi:10.1038/31651

Cited by 68 publications

(79 citation statements)

References 18 publications

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“…Neptune's satellite Triton-a body similar to Pluto in size, density, and atmospheric constituentsexperienced a smaller pressure increase 19,20 during 1989-97. Surface-pressure increases on both of these bodies would be driven by regaining vapour-pressure equilibrium in response to small increases in the temperature (,1 K) of nitrogen surface ice.…”

mentioning

confidence: 99%

The recent expansion of Pluto's atmosphere

Elliot

Ateş

Babcock

et al. 2003

Nature

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113

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confidence: 99%

The recent expansion of Pluto's atmosphere

Elliot

Ateş

Babcock

et al. 2003

Nature

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113

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“…However, the signal-to-noise ratios for these data sets are not high, in comparison with those for the Tr148 and Tr180 occultations, which involved brighter stars and larger telescopes. In both of these other occultations, the atmosphere exhibited the same temperature and pressure at all points probed to the noise limit of the light curves within these data sets , Elliot et al 1998, 2000. The sub-occultation locations on Triton that were probed by this occultation are given in Table X.…”

Section: Light-curve Analysismentioning

confidence: 98%

“…Following our observations of the Tr176 occultation, Elliot et al (1998) reported Hubble Space Telescope observations of a subsequent occultation by Triton of the star Tr180, which occurred on 1997 November 4 (McDonald and Elliot 1995). They found that the surface pressure of Triton's atmosphere has increased since the time of Voyager, indicating a warming of the N 2 surface frost.…”

Section: Introductionmentioning

confidence: 99%

“…The data did not have sufficient signal-to-noise ratio to allow the thermal gradient to be a free parameter (as was possible for the Tr180 occultation, Elliot et al 1998), so we assumed an isothermal atmosphere. Although we know that Triton's atmosphere is not isothermal over the altitude range probed by the occultation (Elliot et al 2000), our results for atmospheric temperatures and pressures will be directly comparable with the equivalent-isothermal results from other occultations .…”

Section: Light-curve Analysismentioning

confidence: 99%

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The Prediction and Observation of the 1997 July 18 Stellar Occultation by Triton: More Evidence for Distortion and Increasing Pressure in Triton's Atmosphere

Elliot

McDonald

Buie

et al. 2000

Icarus

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“…Over the lifetime of Triton, a 6-m-thick layer of sediments of hydrocarbons (Cruikshank et al 1993) may have been formed by the accumulation of the same kind of molecules that participated in the origin of life in the Earth more than 4 Gyr ago. Triton is the coldest body in the Solar System, with a mean temperature of 38 K, maintained constant by the sublimation and condensation of nitrogen (Elliot et al 1998). Nevertheless, it may harbour an inner ocean, hidden at a depth of about 100 km under the nitrogen-ice surface.…”

Section: Triton and The Neptunian Systemmentioning

confidence: 99%

Extraterrestrial hydrogeology

et al. 2005

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Subsurface water processes are common for planetary bodies in the solar system and are highly probable for exoplanets (planets outside the solar system). For many solar system objects, the subsurface water exists as ice. For Earth and Mars, subsurface saturated zones have occurred throughout their planetary histories. Earth is mostly clement with the recharge of most groundwater reservoirs from ample precipitation during transient iceand hot-house conditions, as recorded through the geologic and fossilized records. On the other hand, Mars is mostly in an ice-house stage, which is interrupted by endogenic-driven activity. This activity catastrophically drives short-lived hydrological cycling and associated climatic perturbations. Regional aquifers in the Martian highlands that developed during past, more Earth-like conditions delivered water to the northern plains. Water was also cycled to the South Polar Region during changes in climate induced by endogenic activity and/or by changes in Mars' orbital parameters. Venus very likely had a warm hydrosphere for hundreds of millions of years, before the development of its current extremely hot atmosphere and surface. Subsequently, Venus lost its hydrosphere as solar luminosity increased and a run-away moist greenhouse took effect. Subsurface oceans of water or ammonia-water composition, induced by tidal forces and radiogenic heating, probably occur on the larger satellites Europa, Ganymede, Callisto, Titan, and Triton. Tidal forces operating between some of the small bodies of the outer solar system could also promote the fusion of ice and the stability of inner liquid-water oceans.RØsumØ Les processus de subsurface impliquant l'eau sont communs pour les corps planØtaires du syst me solaire et sont tr s probables sur les exoplan tes (plan tes en dehors du syst me solaire). Pour plusieurs objets du syst mes solaire, l'eau de subsurface est prØsente sous forme de glace. Pour la Terre et Mars, les zones saturØes de subsurface apparaissent à travers toute leur histoire planØtaire. La Terre est particuli rement clØmente avec la recharge des rØservoirs, avec de amples prØcipitations, des conditions glaciaires et de fortes chaleurs, comme l'atteste les enregistrements gØologiques et palØontologiques. D'un autre côtØ, Mars se trouve dans une phase essentiellement glaciaire, qui est interrompue par des activitØs contraintes par les phØnom nes endogØniques. Cette activitØ conduit de mani re catastrophique à des cycles hydrologiques et à des perturbations climatiques brutaux. Les aquif res rØgionaux dans les haute terres martiennes qui se sont formØs dans des conditions similaires aux conditions terrestres, alimentent les plaines du Nord. Resumen Los procesos hídricos subsuperficiales son comunes en cuerpos planetarios del sistema solar y son altamente probables para exoplanetas (planetas fuera del sistema solar). Para muchos cuerpos del sistema solar, el agua subsuperficial existe como hielo. Para la Tierra y Marte han ocurrido zonas saturadas subsuperficiales a travØ...

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Global warming on Triton

Abstract: D. V. Distance measurement and wave dispersion in a Liouville string approach to quantum gravity. Int. J. Mod. Phys. A 12, 607-623 (1997). 18. Amelino-Camelia, G. Limits on the measurability of space-time distances in the semi-classical approximation of quantum gravity. Mod. Phys. Lett.

Cited by 68 publications

References 18 publications

The recent expansion of Pluto's atmosphere

The recent expansion of Pluto's atmosphere

The Prediction and Observation of the 1997 July 18 Stellar Occultation by Triton: More Evidence for Distortion and Increasing Pressure in Triton's Atmosphere

Extraterrestrial hydrogeology

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