Small-scale modelling of the physiochemical impacts of CO2 leaked from sub-seabed reservoirs or pipelines within the North Sea and surrounding waters.

Dewar, Marius, Wei, Wei, McNeil, David and Chen, Baixin (2013) Small-scale modelling of the physiochemical impacts of CO2 leaked from sub-seabed reservoirs or pipelines within the North Sea and surrounding waters. Marine Pollution Bulletin, 73 (2). pp. 504-515. DOI 10.1016/j.marpolbul.2013.03.005.

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Abstract

A two-fluid, small scale numerical ocean model was developed to simulate plume dynamics and
increases in water acidity due to leakages of CO2 from potential sub-seabed reservoirs erupting, or pipeline
breaching into the North Sea. The location of a leak of such magnitude is unpredictable; therefore,
multiple scenarios are modelled with the physiochemical impact measured in terms of the movement
and dissolution of the leaked CO2. A correlation for the drag coefficient of bubbles/droplets free rising
in seawater is presented and a sub-model to predict the initial bubble/droplet size forming on the seafloor
is proposed. With the case studies investigated, the leaked bubbles/droplets fully dissolve before
reaching the water surface, where the solution will be dispersed into the larger scale ocean waters.
The tools developed can be extended to various locations to model the sudden eruption, which is vital
in determining the fate of the CO2 within the local waters.

Document Type: Article
Funder compliance: info:eu-repo/grantAgreement/EC/FP7/265847
Keywords: Carbon dioxide; Leakage; Modelling; Bubbles; Droplets
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1016/j.marpolbul.2013.03.005
ISSN: 0025-326X
Projects: ECO2
Date Deposited: 05 Nov 2013 09:55
Last Modified: 05 Nov 2013 09:55
URI: http://oceanrep.geomar.de/id/eprint/22359

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