Details

Autor(en) / Beteiligte

• Croft, S.K.
• Lunine, J.I.
• Kargel, J.

Titel

Equation of state of ammonia-water liquid: Derivation and planetological applications

Ist Teil von

• Icarus (New York, N.Y. 1962), 1988-02, Vol.73 (2), p.279-293

Ort / Verlag

Legacy CDMS: Elsevier Inc

Erscheinungsjahr

1988

Link zum Volltext

Quelle

Elsevier Journal Backfiles on ScienceDirect (DFG Nationallizenzen)

Beschreibungen/Notizen

• An equation of state for ammonia-water liquid has been calculated by least-squares fit for the following range of parameters: 0 to 100 wt% NH 3, 170 to 300°K, and 0 to 10 kb. Measured and calculated liquid densities were used in conjunction with solid density and thermodynamic measurements to estimate the thermal expansion and density at 1 bar for the solid phases of ammonia dihydrate, ammonia monohydrate, and ammonia hemihydrate between 0°K and their respective melting points. The peritectic ammonia-water liquid near pure ammonia dihydrate in composition was found to have a density of about 0.946 g/cm 3 and to be approximately neutrally buoyant relative to the corresponding solid phases. This implies that igneous activity involving ammonia-water liquids on icy satellites may be both extrusive and intrusive in nature, possibly giving rise to a wide variety of morphologic and tectonic forms.