Ocean Science
Ocean Science
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Articles | Volume 18, issue 4
Articles | Volume 18, issue 4
https://doi.org/10.5194/os-18-1055-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-18-1055-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 4
Research article
 | 
15 Jul 2022
Research article |  | 15 Jul 2022

Deep through-flow in the Bight Fracture Zone

Tillys Petit, Virginie Thierry, and Herlé Mercier

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Argo: Argo float data and metadata from Global Data Assembly Centre (Argo GDAC), SEANOE [data set], https://doi.org/10.17882/42182, 2022. 
Bower, A. and Furey, H.: Iceland-Scotland Overflow Water transport variability through the Charlie-Gibbs Fracture Zone and the impact of the North Atlantic Current, J. Geophys. Res.-Ocean., 122, 6989–7012, https://doi.org/10.1002/2017JC012698, 2017. 
Bower, A. and von Appen, W.-J.: Interannual Variability in the Pathways of the North Atlantic Current over the Mid-Atlantic Ridge and the Impact of Topography, J. Phys. Oceanogr., 38, 104–120, https://doi.org/10.1175/2007JPO3686.1, 2008. 
Bower, A., Le Cann, B., Rossby, T., Zenk, W., Gould, J., Speer, K., Richardson, P. L., Prater, M. D., and Zhang, H. M.: Directly measured mid-depth circulation in the northeastern North Atlantic Ocean, Nature, 419, 603–607, https://doi.org/10.1038/nature01078, 2002. 
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The Iceland–Scotland Overflow Water is a dense water carried within the lower limb of the Atlantic Meridional Overturning Circulation. From a combination of ship-based and Deep-Argo data gathered between 2015 and 2018, our study analyzes the pathways and evolution of its properties as it flows through a main fracture of the Reykjanes Ridge, the Bight Fracture Zone (BFZ). We show that 0.8 ± 0.2 Sv of ISOW flows through the BFZ and is mainly homogenized within the rift valley of the ridge.
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