The sensitivity of gas hydrate reservoirs to climate change: Perspectives from a new combined model for permafrost-related and marine settings
International audience Gas hydrate reservoirs store large quantities of gas in sediments on continental margins, in deep lakes, and in continental and relic sub-shelf permafrost. The gas hydrate structure is only stable at sufficiently low temperature and high pressure, and may therefore collapse un...
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ftsorbonneuniv:oai:HAL:hal-01521071v1 2023-12-10T09:52:50+01:00 The sensitivity of gas hydrate reservoirs to climate change: Perspectives from a new combined model for permafrost-related and marine settings Mestdagh, Thomas Poort, Jeffrey de Batist, Marc Renard Centre of Marine Geology Universiteit Gent = Ghent University (UGENT) Evolution et Modélisation des Bassins Sédimentaires (EMBS) Institut des Sciences de la Terre de Paris (iSTeP) Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) 2017 https://hal.sorbonne-universite.fr/hal-01521071 https://hal.sorbonne-universite.fr/hal-01521071/document https://hal.sorbonne-universite.fr/hal-01521071/file/Mestdagh_The_sensitivity_of.pdf https://doi.org/10.1016/j.earscirev.2017.04.013 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.earscirev.2017.04.013 hal-01521071 https://hal.sorbonne-universite.fr/hal-01521071 https://hal.sorbonne-universite.fr/hal-01521071/document https://hal.sorbonne-universite.fr/hal-01521071/file/Mestdagh_The_sensitivity_of.pdf doi:10.1016/j.earscirev.2017.04.013 info:eu-repo/semantics/OpenAccess ISSN: 0012-8252 Earth-Science Reviews https://hal.sorbonne-universite.fr/hal-01521071 Earth-Science Reviews, 2017, 169, pp.104-131. ⟨10.1016/j.earscirev.2017.04.013⟩ Gas hydrate Climate change Methane Modelling Marine Permafrost [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology info:eu-repo/semantics/article Journal articles 2017 ftsorbonneuniv https://doi.org/10.1016/j.earscirev.2017.04.013 2023-11-14T23:40:45Z International audience Gas hydrate reservoirs store large quantities of gas in sediments on continental margins, in deep lakes, and in continental and relic sub-shelf permafrost. The gas hydrate structure is only stable at sufficiently low temperature and high pressure, and may therefore collapse under changing climatic conditions. If a temperature rise or pressure drop (e.g. through falling sea level) is effective enough to dissociate hydrate deposits, methane (the most common gas component in hydrates and a potent greenhouse gas) is released from the hydrate structure and may eventually enter into the atmosphere. This may generate a positive feedback effect, as resulting enhanced greenhouse gas levels would additionally warm the atmosphere and hence maintain or reinforce hydrate dissociation. The significance of this mechanism has been debated over the past decades, often within the framework of geologically rapid Quaternary climatic oscillations and present-day climate warming. An extensive set of studies has addressed the climate-sensitivity of gas hydrate reservoirs in various study areas and geological settings, and by means of various approaches. No real consensus has yet been reached on the matter. In this study, we seek to evaluate the sensitivity of gas hydrate reservoirs to changes in global climate from a more general perspective, by firstly reviewing the available literature, and secondly developing a new numerical model to quantify gas hydrate destabilization under changing environmental conditions. Qualities of the model include the wide applicability to both marine and permafrost-related hydrate reservoirs and the integrative approach, combining existing hydrate formation models with a dissocation model that accounts for the consumption of latent heat during hydrate dissociation. To determine which settings are most vulnerable, and to acquire insight into the extent, fashion and rates of hydrate dissociation, we apply the model to four distinct types of hydrate reservoirs across a hypothetic ... Article in Journal/Newspaper permafrost HAL Sorbonne Université Earth-Science Reviews 169 104 131 |
institution |
Open Polar |
collection |
HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
Gas hydrate Climate change Methane Modelling Marine Permafrost [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
spellingShingle |
Gas hydrate Climate change Methane Modelling Marine Permafrost [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology Mestdagh, Thomas Poort, Jeffrey de Batist, Marc The sensitivity of gas hydrate reservoirs to climate change: Perspectives from a new combined model for permafrost-related and marine settings |
topic_facet |
Gas hydrate Climate change Methane Modelling Marine Permafrost [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
description |
International audience Gas hydrate reservoirs store large quantities of gas in sediments on continental margins, in deep lakes, and in continental and relic sub-shelf permafrost. The gas hydrate structure is only stable at sufficiently low temperature and high pressure, and may therefore collapse under changing climatic conditions. If a temperature rise or pressure drop (e.g. through falling sea level) is effective enough to dissociate hydrate deposits, methane (the most common gas component in hydrates and a potent greenhouse gas) is released from the hydrate structure and may eventually enter into the atmosphere. This may generate a positive feedback effect, as resulting enhanced greenhouse gas levels would additionally warm the atmosphere and hence maintain or reinforce hydrate dissociation. The significance of this mechanism has been debated over the past decades, often within the framework of geologically rapid Quaternary climatic oscillations and present-day climate warming. An extensive set of studies has addressed the climate-sensitivity of gas hydrate reservoirs in various study areas and geological settings, and by means of various approaches. No real consensus has yet been reached on the matter. In this study, we seek to evaluate the sensitivity of gas hydrate reservoirs to changes in global climate from a more general perspective, by firstly reviewing the available literature, and secondly developing a new numerical model to quantify gas hydrate destabilization under changing environmental conditions. Qualities of the model include the wide applicability to both marine and permafrost-related hydrate reservoirs and the integrative approach, combining existing hydrate formation models with a dissocation model that accounts for the consumption of latent heat during hydrate dissociation. To determine which settings are most vulnerable, and to acquire insight into the extent, fashion and rates of hydrate dissociation, we apply the model to four distinct types of hydrate reservoirs across a hypothetic ... |
author2 |
Renard Centre of Marine Geology Universiteit Gent = Ghent University (UGENT) Evolution et Modélisation des Bassins Sédimentaires (EMBS) Institut des Sciences de la Terre de Paris (iSTeP) Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Mestdagh, Thomas Poort, Jeffrey de Batist, Marc |
author_facet |
Mestdagh, Thomas Poort, Jeffrey de Batist, Marc |
author_sort |
Mestdagh, Thomas |
title |
The sensitivity of gas hydrate reservoirs to climate change: Perspectives from a new combined model for permafrost-related and marine settings |
title_short |
The sensitivity of gas hydrate reservoirs to climate change: Perspectives from a new combined model for permafrost-related and marine settings |
title_full |
The sensitivity of gas hydrate reservoirs to climate change: Perspectives from a new combined model for permafrost-related and marine settings |
title_fullStr |
The sensitivity of gas hydrate reservoirs to climate change: Perspectives from a new combined model for permafrost-related and marine settings |
title_full_unstemmed |
The sensitivity of gas hydrate reservoirs to climate change: Perspectives from a new combined model for permafrost-related and marine settings |
title_sort |
sensitivity of gas hydrate reservoirs to climate change: perspectives from a new combined model for permafrost-related and marine settings |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://hal.sorbonne-universite.fr/hal-01521071 https://hal.sorbonne-universite.fr/hal-01521071/document https://hal.sorbonne-universite.fr/hal-01521071/file/Mestdagh_The_sensitivity_of.pdf https://doi.org/10.1016/j.earscirev.2017.04.013 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
ISSN: 0012-8252 Earth-Science Reviews https://hal.sorbonne-universite.fr/hal-01521071 Earth-Science Reviews, 2017, 169, pp.104-131. ⟨10.1016/j.earscirev.2017.04.013⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.earscirev.2017.04.013 hal-01521071 https://hal.sorbonne-universite.fr/hal-01521071 https://hal.sorbonne-universite.fr/hal-01521071/document https://hal.sorbonne-universite.fr/hal-01521071/file/Mestdagh_The_sensitivity_of.pdf doi:10.1016/j.earscirev.2017.04.013 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.earscirev.2017.04.013 |
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Earth-Science Reviews |
container_volume |
169 |
container_start_page |
104 |
op_container_end_page |
131 |
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