The Global Inventory of Methane Hydrate in Marine Sediments: A Theoretical Approach
The accumulation of methane hydrate in marine sediments is controlled by a number of physical and biogeochemical parameters including the thickness of the gas hydrate stability zone (GHSZ), the solubility of methane in pore fluids, the accumulation of particulate organic carbon at the seafloor, the...
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ftdoajarticles:oai:doaj.org/article:a1425143006442a9b2fb8df67cefe493 2023-05-15T17:11:49+02:00 The Global Inventory of Methane Hydrate in Marine Sediments: A Theoretical Approach Andrew Dale Lars Ruepke Christian Hensen Matthias Haeckel Elena Pinero Ewa Burwicz Klaus Wallmann 2012-07-01T00:00:00Z https://doi.org/10.3390/en5072449 https://doaj.org/article/a1425143006442a9b2fb8df67cefe493 EN eng MDPI AG http://www.mdpi.com/1996-1073/5/7/2449 https://doaj.org/toc/1996-1073 doi:10.3390/en5072449 1996-1073 https://doaj.org/article/a1425143006442a9b2fb8df67cefe493 Energies, Vol 5, Iss 7, Pp 2449-2498 (2012) methane gas hydrate marine sediments global change Technology T article 2012 ftdoajarticles https://doi.org/10.3390/en5072449 2022-12-30T23:33:02Z The accumulation of methane hydrate in marine sediments is controlled by a number of physical and biogeochemical parameters including the thickness of the gas hydrate stability zone (GHSZ), the solubility of methane in pore fluids, the accumulation of particulate organic carbon at the seafloor, the kinetics of microbial organic matter degradation and methane generation in marine sediments, sediment compaction and the ascent of deep-seated pore fluids and methane gas into the GHSZ. Our present knowledge on these controlling factors is discussed and new estimates of global sediment and methane fluxes are provided applying a transport-reaction model at global scale. The modeling and the data evaluation yield improved and better constrained estimates of the global pore volume within the modern GHSZ ( ≥ 44 × 10 15 m 3 ), the Holocene POC accumulation rate at the seabed (~1.4 × 10 14 g yr −1 ), the global rate of microbial methane production in the deep biosphere (4−25 × 10 12 g C yr −1 ) and the inventory of methane hydrates in marine sediments ( ≥ 455 Gt of methane-bound carbon). Article in Journal/Newspaper Methane hydrate Directory of Open Access Journals: DOAJ Articles Energies 5 7 2449 2498 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
methane gas hydrate marine sediments global change Technology T |
spellingShingle |
methane gas hydrate marine sediments global change Technology T Andrew Dale Lars Ruepke Christian Hensen Matthias Haeckel Elena Pinero Ewa Burwicz Klaus Wallmann The Global Inventory of Methane Hydrate in Marine Sediments: A Theoretical Approach |
topic_facet |
methane gas hydrate marine sediments global change Technology T |
description |
The accumulation of methane hydrate in marine sediments is controlled by a number of physical and biogeochemical parameters including the thickness of the gas hydrate stability zone (GHSZ), the solubility of methane in pore fluids, the accumulation of particulate organic carbon at the seafloor, the kinetics of microbial organic matter degradation and methane generation in marine sediments, sediment compaction and the ascent of deep-seated pore fluids and methane gas into the GHSZ. Our present knowledge on these controlling factors is discussed and new estimates of global sediment and methane fluxes are provided applying a transport-reaction model at global scale. The modeling and the data evaluation yield improved and better constrained estimates of the global pore volume within the modern GHSZ ( ≥ 44 × 10 15 m 3 ), the Holocene POC accumulation rate at the seabed (~1.4 × 10 14 g yr −1 ), the global rate of microbial methane production in the deep biosphere (4−25 × 10 12 g C yr −1 ) and the inventory of methane hydrates in marine sediments ( ≥ 455 Gt of methane-bound carbon). |
format |
Article in Journal/Newspaper |
author |
Andrew Dale Lars Ruepke Christian Hensen Matthias Haeckel Elena Pinero Ewa Burwicz Klaus Wallmann |
author_facet |
Andrew Dale Lars Ruepke Christian Hensen Matthias Haeckel Elena Pinero Ewa Burwicz Klaus Wallmann |
author_sort |
Andrew Dale |
title |
The Global Inventory of Methane Hydrate in Marine Sediments: A Theoretical Approach |
title_short |
The Global Inventory of Methane Hydrate in Marine Sediments: A Theoretical Approach |
title_full |
The Global Inventory of Methane Hydrate in Marine Sediments: A Theoretical Approach |
title_fullStr |
The Global Inventory of Methane Hydrate in Marine Sediments: A Theoretical Approach |
title_full_unstemmed |
The Global Inventory of Methane Hydrate in Marine Sediments: A Theoretical Approach |
title_sort |
global inventory of methane hydrate in marine sediments: a theoretical approach |
publisher |
MDPI AG |
publishDate |
2012 |
url |
https://doi.org/10.3390/en5072449 https://doaj.org/article/a1425143006442a9b2fb8df67cefe493 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
Energies, Vol 5, Iss 7, Pp 2449-2498 (2012) |
op_relation |
http://www.mdpi.com/1996-1073/5/7/2449 https://doaj.org/toc/1996-1073 doi:10.3390/en5072449 1996-1073 https://doaj.org/article/a1425143006442a9b2fb8df67cefe493 |
op_doi |
https://doi.org/10.3390/en5072449 |
container_title |
Energies |
container_volume |
5 |
container_issue |
7 |
container_start_page |
2449 |
op_container_end_page |
2498 |
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1766068572326461440 |