Elasticity of methane hydrate phases at high pressure
Determination of the full elastic constants (cij) of methane hydrates (MHs) at extreme pressure-temperature environments is essential to our understanding of the elastic, thermodynamic, and mechanical properties of methane in MH reservoirs on Earth and icy satellites in the solar system. Here, we ha...
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craippubl:10.1063/1.4946795 2024-02-11T10:05:49+01:00 Elasticity of methane hydrate phases at high pressure Beam, Jennifer Yang, Jing Liu, Jin Liu, Chujie Lin, Jung-Fu Burke Undergraduate Research Fund of the Department of Geological Sciences, the University of Texas Extreme Physics and Chemistry Program of the Deep Carbon Observatory Seed Grant of the Jackson School of Geosciences 2016 http://dx.doi.org/10.1063/1.4946795 https://pubs.aip.org/aip/jcp/article-pdf/doi/10.1063/1.4946795/15511595/154501_1_online.pdf en eng AIP Publishing The Journal of Chemical Physics volume 144, issue 15 ISSN 0021-9606 1089-7690 Physical and Theoretical Chemistry General Physics and Astronomy journal-article 2016 craippubl https://doi.org/10.1063/1.4946795 2024-01-26T09:47:21Z Determination of the full elastic constants (cij) of methane hydrates (MHs) at extreme pressure-temperature environments is essential to our understanding of the elastic, thermodynamic, and mechanical properties of methane in MH reservoirs on Earth and icy satellites in the solar system. Here, we have investigated the elastic properties of singe-crystal cubic MH-sI, hexagonal MH-II, and orthorhombic MH-III phases at high pressures in a diamond anvil cell. Brillouin light scattering measurements, together with complimentary equation of state (pressure-density) results from X-ray diffraction and methane site occupancies in MH from Raman spectroscopy, were used to derive elastic constants of MH-sI, MH-II, and MH-III phases at high pressures. Analysis of the elastic constants for MH-sI and MH-II showed intriguing similarities and differences between the phases′ compressional wave velocity anisotropy and shear wave velocity anisotropy. Our results show that these high-pressure MH phases can exhibit distinct elastic, thermodynamic, and mechanical properties at relevant environments of their respective natural reservoirs. These results provide new insight into the determination of how much methane exists in MH reservoirs on Earth and on icy satellites elsewhere in the solar system and put constraints on the pressure and temperature conditions of their environment. Article in Journal/Newspaper Methane hydrate AIP Publishing Anvil ENVELOPE(-64.267,-64.267,-65.239,-65.239) The Journal of Chemical Physics 144 15 154501 |
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AIP Publishing |
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language |
English |
topic |
Physical and Theoretical Chemistry General Physics and Astronomy |
spellingShingle |
Physical and Theoretical Chemistry General Physics and Astronomy Beam, Jennifer Yang, Jing Liu, Jin Liu, Chujie Lin, Jung-Fu Elasticity of methane hydrate phases at high pressure |
topic_facet |
Physical and Theoretical Chemistry General Physics and Astronomy |
description |
Determination of the full elastic constants (cij) of methane hydrates (MHs) at extreme pressure-temperature environments is essential to our understanding of the elastic, thermodynamic, and mechanical properties of methane in MH reservoirs on Earth and icy satellites in the solar system. Here, we have investigated the elastic properties of singe-crystal cubic MH-sI, hexagonal MH-II, and orthorhombic MH-III phases at high pressures in a diamond anvil cell. Brillouin light scattering measurements, together with complimentary equation of state (pressure-density) results from X-ray diffraction and methane site occupancies in MH from Raman spectroscopy, were used to derive elastic constants of MH-sI, MH-II, and MH-III phases at high pressures. Analysis of the elastic constants for MH-sI and MH-II showed intriguing similarities and differences between the phases′ compressional wave velocity anisotropy and shear wave velocity anisotropy. Our results show that these high-pressure MH phases can exhibit distinct elastic, thermodynamic, and mechanical properties at relevant environments of their respective natural reservoirs. These results provide new insight into the determination of how much methane exists in MH reservoirs on Earth and on icy satellites elsewhere in the solar system and put constraints on the pressure and temperature conditions of their environment. |
author2 |
Burke Undergraduate Research Fund of the Department of Geological Sciences, the University of Texas Extreme Physics and Chemistry Program of the Deep Carbon Observatory Seed Grant of the Jackson School of Geosciences |
format |
Article in Journal/Newspaper |
author |
Beam, Jennifer Yang, Jing Liu, Jin Liu, Chujie Lin, Jung-Fu |
author_facet |
Beam, Jennifer Yang, Jing Liu, Jin Liu, Chujie Lin, Jung-Fu |
author_sort |
Beam, Jennifer |
title |
Elasticity of methane hydrate phases at high pressure |
title_short |
Elasticity of methane hydrate phases at high pressure |
title_full |
Elasticity of methane hydrate phases at high pressure |
title_fullStr |
Elasticity of methane hydrate phases at high pressure |
title_full_unstemmed |
Elasticity of methane hydrate phases at high pressure |
title_sort |
elasticity of methane hydrate phases at high pressure |
publisher |
AIP Publishing |
publishDate |
2016 |
url |
http://dx.doi.org/10.1063/1.4946795 https://pubs.aip.org/aip/jcp/article-pdf/doi/10.1063/1.4946795/15511595/154501_1_online.pdf |
long_lat |
ENVELOPE(-64.267,-64.267,-65.239,-65.239) |
geographic |
Anvil |
geographic_facet |
Anvil |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
The Journal of Chemical Physics volume 144, issue 15 ISSN 0021-9606 1089-7690 |
op_doi |
https://doi.org/10.1063/1.4946795 |
container_title |
The Journal of Chemical Physics |
container_volume |
144 |
container_issue |
15 |
container_start_page |
154501 |
_version_ |
1790603012170842112 |