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| Main Authors: | , , , , , , , , , , , , , , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
| Published: |
PANGAEA
2014
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| Subjects: | |
| Online Access: | https://doi.org/10.1594/PANGAEA.824947 |
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| _version_ | 1867167671240359936 |
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| author | Berndt, Christian Feseker, Tomas Treude, Tina Krastel, Sebastian Liebetrau, Volker Niemann, Helge Bertics, Victoria J Dumke, Ines Dünnbier, Karolin Ferre, Benedicte Graves, Carolyn Gross, Felix Hissmann, Karen Hühnerbach, Veit Krause, Stefan Lieser, Kathrin Schauer, Jürgen Steinle, Lea |
| author_facet | Berndt, Christian Feseker, Tomas Treude, Tina Krastel, Sebastian Liebetrau, Volker Niemann, Helge Bertics, Victoria J Dumke, Ines Dünnbier, Karolin Ferre, Benedicte Graves, Carolyn Gross, Felix Hissmann, Karen Hühnerbach, Veit Krause, Stefan Lieser, Kathrin Schauer, Jürgen Steinle, Lea |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Methane hydrate is an ice-like substance that is stable at high-pressure and low temperature in continental margin sediments. Since the discovery of a large number of gas flares at the landward termination of the gas hydrate stability zone off Svalbard, there has been concern that warming bottom waters have started to dissociate large amounts of gas hydrate and that the resulting methane release may possibly accelerate global warming. Here, we can corroborate that hydrates play a role in the observed seepage of gas, but we present evidence that seepage off Svalbard has been ongoing for at least three thousand years and that seasonal fluctuations of 1-2°C in the bottom-water temperature cause periodic gas hydrate formation and dissociation, which focus seepage at the observed sites. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_824947 |
| institution | PANGAEA |
| language | en |
| publishDate | 2014 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Isotope analysis and heat flow measurements of Maria S. Merian cruise MSM21/4 on the western Svalbard margin Berndt, Christian Feseker, Tomas Treude, Tina Krastel, Sebastian Liebetrau, Volker Niemann, Helge Bertics, Victoria J Dumke, Ines Dünnbier, Karolin Ferre, Benedicte Graves, Carolyn Gross, Felix Hissmann, Karen Hühnerbach, Veit Krause, Stefan Lieser, Kathrin Schauer, Jürgen Steinle, Lea Center for Marine Environmental Sciences; GEOMAR; Helmholtz Centre for Ocean Research Kiel; MARUM Methane hydrate is an ice-like substance that is stable at high-pressure and low temperature in continental margin sediments. Since the discovery of a large number of gas flares at the landward termination of the gas hydrate stability zone off Svalbard, there has been concern that warming bottom waters have started to dissociate large amounts of gas hydrate and that the resulting methane release may possibly accelerate global warming. Here, we can corroborate that hydrates play a role in the observed seepage of gas, but we present evidence that seepage off Svalbard has been ongoing for at least three thousand years and that seasonal fluctuations of 1-2°C in the bottom-water temperature cause periodic gas hydrate formation and dissociation, which focus seepage at the observed sites. |
| title | Isotope analysis and heat flow measurements of Maria S. Merian cruise MSM21/4 on the western Svalbard margin |
| topic | Center for Marine Environmental Sciences; GEOMAR; Helmholtz Centre for Ocean Research Kiel; MARUM |
| url | https://doi.org/10.1594/PANGAEA.824947 |