Large-Scale Simulation of Methane Hydrate Dissociation along the West Spitsbergen Margin
Vast quantities of methane are trapped in oceanic hydrate deposits, and there is concern that a rise in the ocean temperature will induce dissociation of these hydrate accumulations, potentially releasing large amounts of methane into the atmosphere. The recent discovery of active methane gas ventin...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.192.6516 2023-05-15T17:12:04+02:00 Large-Scale Simulation of Methane Hydrate Dissociation along the West Spitsbergen Margin Matthew T. Reagan George J. Moridis The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.192.6516 http://www.netl.doe.gov/technologies/oil-gas/publications/Hydrates/2009Reports/ESD07-014_ReportDec09.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.192.6516 http://www.netl.doe.gov/technologies/oil-gas/publications/Hydrates/2009Reports/ESD07-014_ReportDec09.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.netl.doe.gov/technologies/oil-gas/publications/Hydrates/2009Reports/ESD07-014_ReportDec09.pdf gas hydrates methane clathrates abrupt changeGas hydrates are solid crystalline compounds in which gas molecules are lodged within a text ftciteseerx 2016-01-07T16:57:08Z Vast quantities of methane are trapped in oceanic hydrate deposits, and there is concern that a rise in the ocean temperature will induce dissociation of these hydrate accumulations, potentially releasing large amounts of methane into the atmosphere. The recent discovery of active methane gas venting along the landward limit of the gas hydrate stability zone (GHSZ) on the shallow continental slope west of Spitsbergen could be an indication of this process, if the source of the methane can be confidently attributed to dissociating hydrates. In the first largescale simulation study of its kind, we simulate shallow hydrate dissociation in conditions representative of the West Spitsbergen margin to test the hypothesis that the observed gas release originated from hydrates. The simulation results are consistent with this hypothesis, and are in remarkable agreement with the recently published observations. They show that shallow, lowsaturation hydrate deposits, when subjected to temperature increases at the seafloor, can release significant quantities of methane, and that the releases will be localized near the landward limit of the top of the GHSZ. These results indicate the possibility that hydrate dissociation and methane release may be both a consequence and a cause of climate change. Text Methane hydrate Spitsbergen Unknown |
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English |
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gas hydrates methane clathrates abrupt changeGas hydrates are solid crystalline compounds in which gas molecules are lodged within a |
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gas hydrates methane clathrates abrupt changeGas hydrates are solid crystalline compounds in which gas molecules are lodged within a Matthew T. Reagan George J. Moridis Large-Scale Simulation of Methane Hydrate Dissociation along the West Spitsbergen Margin |
topic_facet |
gas hydrates methane clathrates abrupt changeGas hydrates are solid crystalline compounds in which gas molecules are lodged within a |
description |
Vast quantities of methane are trapped in oceanic hydrate deposits, and there is concern that a rise in the ocean temperature will induce dissociation of these hydrate accumulations, potentially releasing large amounts of methane into the atmosphere. The recent discovery of active methane gas venting along the landward limit of the gas hydrate stability zone (GHSZ) on the shallow continental slope west of Spitsbergen could be an indication of this process, if the source of the methane can be confidently attributed to dissociating hydrates. In the first largescale simulation study of its kind, we simulate shallow hydrate dissociation in conditions representative of the West Spitsbergen margin to test the hypothesis that the observed gas release originated from hydrates. The simulation results are consistent with this hypothesis, and are in remarkable agreement with the recently published observations. They show that shallow, lowsaturation hydrate deposits, when subjected to temperature increases at the seafloor, can release significant quantities of methane, and that the releases will be localized near the landward limit of the top of the GHSZ. These results indicate the possibility that hydrate dissociation and methane release may be both a consequence and a cause of climate change. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Matthew T. Reagan George J. Moridis |
author_facet |
Matthew T. Reagan George J. Moridis |
author_sort |
Matthew T. Reagan |
title |
Large-Scale Simulation of Methane Hydrate Dissociation along the West Spitsbergen Margin |
title_short |
Large-Scale Simulation of Methane Hydrate Dissociation along the West Spitsbergen Margin |
title_full |
Large-Scale Simulation of Methane Hydrate Dissociation along the West Spitsbergen Margin |
title_fullStr |
Large-Scale Simulation of Methane Hydrate Dissociation along the West Spitsbergen Margin |
title_full_unstemmed |
Large-Scale Simulation of Methane Hydrate Dissociation along the West Spitsbergen Margin |
title_sort |
large-scale simulation of methane hydrate dissociation along the west spitsbergen margin |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.192.6516 http://www.netl.doe.gov/technologies/oil-gas/publications/Hydrates/2009Reports/ESD07-014_ReportDec09.pdf |
genre |
Methane hydrate Spitsbergen |
genre_facet |
Methane hydrate Spitsbergen |
op_source |
http://www.netl.doe.gov/technologies/oil-gas/publications/Hydrates/2009Reports/ESD07-014_ReportDec09.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.192.6516 http://www.netl.doe.gov/technologies/oil-gas/publications/Hydrates/2009Reports/ESD07-014_ReportDec09.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766068819156008960 |