Measurements from a robotic underwater vehicle reveal the impacts of meltwater from the giant iceberg A-68A on the properties of the surrounding Southern Ocean. In addition to increasing surface stratification and mid-depth vertical mixing, the meltwater impacts primary productivity, with direct and indirect effects on ecosystems and carbon cycling.
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References
Cenedese, C. & Straneo, F. Icebergs melting. Annu. Rev. Fluid Mech. 55, 377–402 (2023). A review article that presents literature on iceberg characteristics, deterioration mechanisms, influences and meltwater modelling.
Stephenson, G. R. Jr. et al. Subsurface melting of a free-floating Antarctic iceberg. Deep Sea Res. 2 Top. Stud. Oceanogr. 58, 1336–1345 (2011). This paper quantifies the transport of iceberg meltwater and identifies the different types of dispersal.
Duprat, L. P. A. M., Bigg, G. R. & Wilton, D. J. Enhanced Southern Ocean marine productivity due to fertilization by giant icebergs. Nat. Geosci. 9, 219–221 (2016). A letter that presents the effect of the passage of 17 giant icebergs between 2003 and 2013 on primary productivity.
Bronselaer, B. et al. Change in future climate due to Antarctic meltwater. Nature 564, 53–58 (2018). This article presents the effect of meltwater on Coupled Model Intercomparison Project phase 5 (CMIP5) projections.
Tarling, G. A. et al. Collapse of a giant iceberg in a dynamic Southern Ocean marine ecosystem: in situ observations of A-68A at South Georgia. Prog. Oceanogr. 226, 103297 (2024). This article resolved alterations to water column structure, nutrient profiles and phytoplankton community composition at fine to medium scales around A-68A and its subsidiary icebergs.
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This is a summary of: Lucas, N. S. et al. Giant iceberg meltwater increases upper-ocean stratification and vertical mixing. Nat. Geosci. https://doi.org/10.1038/s41561-025-01659-7 (2025).
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Proximate measurements of a giant iceberg reveal the effects of meltwater on upper ocean properties. Nat. Geosci. 18, 281–282 (2025). https://doi.org/10.1038/s41561-025-01660-0
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DOI: https://doi.org/10.1038/s41561-025-01660-0
