DOI: 10.1029/2005gl022499. Melting behavior of H<sub>2</sub>O at high pressures and temperatures

Melting behavior of H2O at high pressures and temperatures

10.1029/2005gl022499

Crossref journal-article

American Geophysical Union (AGU)

Geophysical Research Letters (13)

Abstract

Water plays an important role in the physics and chemistry of planetary interiors. In situ high pressure‐temperature Raman spectroscopy and synchrotron x‐ray diffraction have been used to examine the phase diagram of H2O. A discontinuous change in the melting curve of H2O is observed at approximately 35 GPa and 1040 K, indicating a triple point on the melting line. The melting curve of H2O increases significantly above the triple point and may intersect the isentropes of Neptune and Uranus. Solid ice could therefore form in stratified layers at depth within these icy planets. The extrapolated melting curve may also intersect with the geotherm of Earth's lower mantle above 60 GPa. The presence of solid H2O would result in a jump in the viscosity of the mid‐lower mantle and provides an additional explanation for the observed higher viscosity of the mid‐lower mantle.

Bibliography

Lin, J., Gregoryanz, E., Struzhkin, V. V., Somayazulu, M., Mao, H., & Hemley, R. J. (2005). Melting behavior of H2O at high pressures and temperatures. Geophysical Research Letters, 32(11). Portico.

Authors 6

Jung‐Fu Lin (first)
Eugene Gregoryanz (additional)
Viktor V. Struzhkin (additional)
Maddury Somayazulu (additional)
Ho‐kwang Mao (additional)
Russell J. Hemley (additional)

References 27 Referenced 84

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{'issue': '47', 'key': 'e_1_2_6_4_1', 'article-title': 'Water in planets: Dissociation of H2O at high pressures and temperatures to a new form of oxygen', 'volume': '82', 'author': 'Benedetti L.', 'year': '2001', 'journal-title': 'Eos Trans. AGU'} / Eos Trans. AGU / Water in planets: Dissociation of H2O at high pressures and temperatures to a new form of oxygen by Benedetti L. (2001)
10.1103/PhysRevLett.76.2934
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10.1126/science.283.5398.44
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10.1126/science.273.5272.218
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Dates

Type	When
Created	20 years, 2 months ago (June 9, 2005, 3:57 p.m.)
Deposited	1 year, 9 months ago (Oct. 31, 2023, 10:55 a.m.)
Indexed	3 weeks, 2 days ago (July 30, 2025, 10:10 a.m.)
Issued	20 years, 2 months ago (June 1, 2005)
Published	20 years, 2 months ago (June 1, 2005)
Published Online	20 years, 2 months ago (June 10, 2005)
Published Print	20 years, 2 months ago (June 1, 2005)

Funders 0

None

BibTeX

@article{Lin_2005, title={Melting behavior of H2O at high pressures and temperatures}, volume={32}, ISSN={1944-8007}, url={http://dx.doi.org/10.1029/2005gl022499}, DOI={10.1029/2005gl022499}, number={11}, journal={Geophysical Research Letters}, publisher={American Geophysical Union (AGU)}, author={Lin, Jung‐Fu and Gregoryanz, Eugene and Struzhkin, Viktor V. and Somayazulu, Maddury and Mao, Ho‐kwang and Hemley, Russell J.}, year={2005}, month=jun }

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