Phase diagram from ammonia-water mixtures at high pressures: implications for icy satellites.
Abstract
The (NH3)X(H2O)l-x phase diagram for 0 ≤ X ≤ 0.50 has been reexamined at temperatures from 125K to 400K and at pressures to 6.0 GPa using diamond-anvil cells. The authors are applied to the interior of Titan in a manner similar to the analysis of Lunine and Stevenson (1987). The main implication of these results is that Titan is likely to have a thicker NH3·H2O ocean than previously suspected, because the stability field of NH3·2H2O is smaller than previously supposed. Implications for methane and ammonia volcanism of Titan are briefly discussed.
- Publication:
-
Lunar and Planetary Science Conference Proceedings
- Pub Date:
- 1989
- Bibcode:
- 1989LPSC...19..433C
- Keywords:
-
- Ammonia;
- Cosmochemistry;
- Icy Satellites;
- Phase Diagrams;
- Satellite Atmospheres;
- Titan;
- Eutectics;
- Planetary Evolution;
- Raman Spectra;
- Solar System;
- Water;
- Lunar and Planetary Exploration; Planets;
- Titan: Ammonia;
- Titan: Water