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Volume 14, issue 7
Biogeosciences, 14, 1919–1946, 2017
https://doi.org/10.5194/bg-14-1919-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Biogeosciences, 14, 1919–1946, 2017
https://doi.org/10.5194/bg-14-1919-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 07 Apr 2017

Research article | 07 Apr 2017

The roles of resuspension, diffusion and biogeochemical processes on oxygen dynamics offshore of the Rhône River, France: a numerical modeling study

Julia M. Moriarty et al.

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Cited articles

Abril, G., Etcheber, H., Le Hir, P., Bassoullet, P., Boutier, B., and Frankignoulle, M.: Oxic/anoxic oscillations and organic carbon mineralization in an estuarine maximum turbidity zone (the Gironde, France), Limnol. Oceanogr., 44, 1304–1315, https://doi.org/10.4319/lo.1999.44.5.1304, 1999.
Aikman, F., Brady, D.C., Brush, M. J., Burke, P., Cerco, C. F., Fitzpatrick, J. J., and Kemp, W. M.: Modeling approaches for scenario forecasts of Gulf of Mexico hypoxia, in: White Paper from the Hypoxic Zone Modeling Technical Review Meeting, Mississippi State University Science and Technology Center, edited by: Kidwell, D., Lewitus, A., and Turner, E., NASA's Stennis Space Center, Mississippi, 1–46, 2014.
Aller, R. C.: Bioturbation and remineralization of sedimentary organic matter: effects of redox oscillation, Chem. Geol., 114, 331–345. https://doi.org/10.1016/0009-2541(94)90062-0, 1994.
Aller, R. C.: Mobile deltaic and continental shelf muds as suboxic, fluidized bed reactors, Mar. Chem., 61, 143–155, 1998.
Aller, R. C., Blair, N. E., Xia, Q., and Rude, P. D.: Remineralization rates, recycling, and storage of carbon in Amazon shelf sediments, Cont. Shelf Res., 16, 753–786, https://doi.org/10.1016/0278-4343(95)00046-1, 1996.
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In coastal aquatic environments, resuspension of sediment and organic material from the seabed into the overlying water can impact biogeochemistry. Here, we used a novel modeling approach to quantify this impact for the Rhône River delta. In the model, resuspension increased oxygen consumption during individual resuspension events, and when results were averaged over 2 months. This implies that observations and models that only represent calm conditions may underestimate net oxygen consumption.
In coastal aquatic environments, resuspension of sediment and organic material from the seabed...
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