Goldobin, DS, Brilliantov, NV, Levesley, J et al. (6 more authors) (2014) Non-Fickian diffusion and the accumulation of methane bubbles in deep-water sediments. European Physical Journal E, 37 (5). 45. ISSN 1292-8941
Abstract
In the absence of fractures, methane bubbles in deep-water sediments can be immovably trapped within a porous matrix by surface tension. The dominant mechanism of transfer of gas mass therefore becomes the diffusion of gas molecules through porewater. The accurate description of this process requires non-Fickian diffusion to be accounted for, including both thermal diffusion and gravitational action. We evaluate the diffusive flux of aqueous methane considering non-Fickian diffusion and predict the existence of extensive bubble mass accumulation zones within deep-water sediments. The limitation on the hydrate deposit capacity is revealed; too weak deposits cannot reach the base of the hydrate stability zone and form any bubbly horizon.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2014, EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg. This is an author produced version of a paper published in European Physical Journal E. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 10 Sep 2014 11:14 |
Last Modified: | 31 Jul 2015 14:27 |
Published Version: | http://dx.doi.org/10.1140/epje/i2014-14045-x |
Status: | Published |
Publisher: | EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg |
Identification Number: | 10.1140/epje/i2014-14045-x |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:80313 |