Timescales and processes of methane hydrate formation and breakdown, with application to geologic systems
© The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Ruppel, C. D., & Waite, W. F. Timescales and processes of methane hydrate formation and breakdown, with application to geologic systems. Journal...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/26502 2023-05-15T16:37:37+02:00 Timescales and processes of methane hydrate formation and breakdown, with application to geologic systems Ruppel, Carolyn D. Waite, William F. 2020-06-04 https://hdl.handle.net/1912/26502 unknown American Geophysical Union https://doi.org/10.1029/2018JB016459 Ruppel, C. D., & Waite, W. F. (2020). Timescales and processes of methane hydrate formation and breakdown, with application to geologic systems. Journal of Geophysical Research: Solid Earth, 125(8), e2018JB016459. https://hdl.handle.net/1912/26502 doi:10.1029/2018JB016459 Attribution-NonCommercial 4.0 International http://creativecommons.org/licenses/by-nc/4.0/ CC-BY-NC Ruppel, C. D., & Waite, W. F. (2020). Timescales and processes of methane hydrate formation and breakdown, with application to geologic systems. Journal of Geophysical Research: Solid Earth, 125(8), e2018JB016459. doi:10.1029/2018JB016459 Gas hydrate Hydrate breakdown Hydrate formation Permafrost hydrate Geologic systems Marine hydrate Article 2020 ftwhoas https://doi.org/10.1029/2018JB016459 2022-10-29T22:57:22Z © The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Ruppel, C. D., & Waite, W. F. Timescales and processes of methane hydrate formation and breakdown, with application to geologic systems. Journal of Geophysical Research: Solid Earth, 125(8), (2020): e2018JB016459, doi:10.1029/2018JB016459. Gas hydrate is an ice‐like form of water and low molecular weight gas stable at temperatures of roughly −10°C to 25°C and pressures of ~3 to 30 MPa in geologic systems. Natural gas hydrates sequester an estimated one sixth of Earth's methane and are found primarily in deepwater marine sediments on continental margins, but also in permafrost areas and under continental ice sheets. When gas hydrate is removed from its stability field, its breakdown has implications for the global carbon cycle, ocean chemistry, marine geohazards, and interactions between the geosphere and the ocean‐atmosphere system. Gas hydrate breakdown can also be artificially driven as a component of studies assessing the resource potential of these deposits. Furthermore, geologic processes and perturbations to the ocean‐atmosphere system (e.g., warming temperatures) can cause not only dissociation, but also more widespread dissolution of hydrate or even formation of new hydrate in reservoirs. Linkages between gas hydrate and disparate aspects of Earth's near‐surface physical, chemical, and biological systems render an assessment of the rates and processes affecting the persistence of gas hydrate an appropriate Centennial Grand Challenge. This paper reviews the thermodynamic controls on methane hydrate stability and then describes the relative importance of kinetic, mass transfer, and heat transfer processes in the formation and breakdown (dissociation and dissolution) of gas hydrate. Results from numerical modeling, laboratory, and some field studies are used to summarize the rates of hydrate formation and breakdown, followed by an extensive treatment ... Article in Journal/Newspaper Ice Methane hydrate permafrost Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Journal of Geophysical Research: Solid Earth 125 8 |
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Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
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topic |
Gas hydrate Hydrate breakdown Hydrate formation Permafrost hydrate Geologic systems Marine hydrate |
spellingShingle |
Gas hydrate Hydrate breakdown Hydrate formation Permafrost hydrate Geologic systems Marine hydrate Ruppel, Carolyn D. Waite, William F. Timescales and processes of methane hydrate formation and breakdown, with application to geologic systems |
topic_facet |
Gas hydrate Hydrate breakdown Hydrate formation Permafrost hydrate Geologic systems Marine hydrate |
description |
© The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Ruppel, C. D., & Waite, W. F. Timescales and processes of methane hydrate formation and breakdown, with application to geologic systems. Journal of Geophysical Research: Solid Earth, 125(8), (2020): e2018JB016459, doi:10.1029/2018JB016459. Gas hydrate is an ice‐like form of water and low molecular weight gas stable at temperatures of roughly −10°C to 25°C and pressures of ~3 to 30 MPa in geologic systems. Natural gas hydrates sequester an estimated one sixth of Earth's methane and are found primarily in deepwater marine sediments on continental margins, but also in permafrost areas and under continental ice sheets. When gas hydrate is removed from its stability field, its breakdown has implications for the global carbon cycle, ocean chemistry, marine geohazards, and interactions between the geosphere and the ocean‐atmosphere system. Gas hydrate breakdown can also be artificially driven as a component of studies assessing the resource potential of these deposits. Furthermore, geologic processes and perturbations to the ocean‐atmosphere system (e.g., warming temperatures) can cause not only dissociation, but also more widespread dissolution of hydrate or even formation of new hydrate in reservoirs. Linkages between gas hydrate and disparate aspects of Earth's near‐surface physical, chemical, and biological systems render an assessment of the rates and processes affecting the persistence of gas hydrate an appropriate Centennial Grand Challenge. This paper reviews the thermodynamic controls on methane hydrate stability and then describes the relative importance of kinetic, mass transfer, and heat transfer processes in the formation and breakdown (dissociation and dissolution) of gas hydrate. Results from numerical modeling, laboratory, and some field studies are used to summarize the rates of hydrate formation and breakdown, followed by an extensive treatment ... |
format |
Article in Journal/Newspaper |
author |
Ruppel, Carolyn D. Waite, William F. |
author_facet |
Ruppel, Carolyn D. Waite, William F. |
author_sort |
Ruppel, Carolyn D. |
title |
Timescales and processes of methane hydrate formation and breakdown, with application to geologic systems |
title_short |
Timescales and processes of methane hydrate formation and breakdown, with application to geologic systems |
title_full |
Timescales and processes of methane hydrate formation and breakdown, with application to geologic systems |
title_fullStr |
Timescales and processes of methane hydrate formation and breakdown, with application to geologic systems |
title_full_unstemmed |
Timescales and processes of methane hydrate formation and breakdown, with application to geologic systems |
title_sort |
timescales and processes of methane hydrate formation and breakdown, with application to geologic systems |
publisher |
American Geophysical Union |
publishDate |
2020 |
url |
https://hdl.handle.net/1912/26502 |
genre |
Ice Methane hydrate permafrost |
genre_facet |
Ice Methane hydrate permafrost |
op_source |
Ruppel, C. D., & Waite, W. F. (2020). Timescales and processes of methane hydrate formation and breakdown, with application to geologic systems. Journal of Geophysical Research: Solid Earth, 125(8), e2018JB016459. doi:10.1029/2018JB016459 |
op_relation |
https://doi.org/10.1029/2018JB016459 Ruppel, C. D., & Waite, W. F. (2020). Timescales and processes of methane hydrate formation and breakdown, with application to geologic systems. Journal of Geophysical Research: Solid Earth, 125(8), e2018JB016459. https://hdl.handle.net/1912/26502 doi:10.1029/2018JB016459 |
op_rights |
Attribution-NonCommercial 4.0 International http://creativecommons.org/licenses/by-nc/4.0/ |
op_rightsnorm |
CC-BY-NC |
op_doi |
https://doi.org/10.1029/2018JB016459 |
container_title |
Journal of Geophysical Research: Solid Earth |
container_volume |
125 |
container_issue |
8 |
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1766027911311130624 |