Articles | Volume 18, issue 5
https://doi.org/10.5194/os-18-1339-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-18-1339-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| Highlight paper
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14 Sep 2022
Research article | Highlight paper |
| 14 Sep 2022
| 14 Sep 2022
Hydrography, circulation, and response to atmospheric forcing in the vicinity of the central Getz Ice Shelf, Amundsen Sea, Antarctica
Vår Dundas
CORRESPONDING AUTHOR
Geophysical Institute, University of Bergen and the Bjerknes Centre for Climate Research, Bergen, Norway
Elin Darelius
Geophysical Institute, University of Bergen and the Bjerknes Centre for Climate Research, Bergen, Norway
Kjersti Daae
Geophysical Institute, University of Bergen and the Bjerknes Centre for Climate Research, Bergen, Norway
Nadine Steiger
Geophysical Institute, University of Bergen and the Bjerknes Centre for Climate Research, Bergen, Norway
Yoshihiro Nakayama
Institute of Low Temperature Science, Hokkaido University, Sapporo, Japan
Tae-Wan Kim
Korea Polar Research Institute, Incheon, South Korea
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Bogi Hansen, Turið Poulsen, Karin Margretha Húsgarð Larsen, Hjálmar Hátún, Svein Østerhus, Elin Darelius, Barbara Berx, Detlef Quadfasel, and Kerstin Jochumsen
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Stefanie Semper and Elin Darelius
Ocean Sci., 13, 77–93, https://doi.org/10.5194/os-13-77-2017, https://doi.org/10.5194/os-13-77-2017, 2017
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Velocity measurements from moorings at the shelf break in the southern Weddell Sea reveal strong diurnal tidal currents, which are enhanced by ca. 50 % in austral summer compared to winter. A numerical code describing coastal trapped waves (CTWs) is used to explore the effect of changing stratification and circulation on wave properties. It is found that near-resonance between CTWs and diurnal tides during austral summer can explain the observed enhancement of diurnal tidal currents.
Jenny E. Ullgren, Elin Darelius, and Ilker Fer
Ocean Sci., 12, 451–470, https://doi.org/10.5194/os-12-451-2016, https://doi.org/10.5194/os-12-451-2016, 2016
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One-year long moored measurements of currents and hydrographic properties in the overflow region of the Faroe Bank Channel have provided a more accurate observational-based estimate of the volume transport, entrainment, and eddy diffusivities associated with the overflow plume. The data set resolves the temporal variability and covers the entire lateral and vertical extent of the plume.
E. Darelius, I. Fer, T. Rasmussen, C. Guo, and K. M. H. Larsen
Ocean Sci., 11, 855–871, https://doi.org/10.5194/os-11-855-2015, https://doi.org/10.5194/os-11-855-2015, 2015
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Quasi-regular eddies are known to be generated in the outflow of dense water through the Faroe Bank Channel. One year long mooring records from the plume region show that (1) the energy associated with the eddies varies by a factor of 10 throughout the year and (2) the frequency of the eddies shifts between 3 and 6 days and is related to the strength of the outflow. Similar variability is shown by a high-resolution regional model and the observations agree with theory on baroclinic instability.
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Co-editor-in-chief
The Antarctic is by far the largest body of water (mostly ice in this case) that is not in the sea and therefore potentially important for changing sea level. The large size of the Getz ice shelf and its as yet uncertain potential for melting by oceanic waters below make this an important study for understanding and predicting impacts of a warmer climate.
The Antarctic is by far the largest body of water (mostly ice in this case) that is not in the...
Short summary
Ice shelves in the Amundsen Sea are thinning rapidly as ocean currents bring warm water into cavities beneath the floating ice. We use 2-year-long mooring records and 16-year-long model simulations to describe the hydrography and circulation near the ice front between Siple and Carney Islands. We find that temperatures here are lower than at neighboring ice fronts and that the transport of heat toward the cavity is governed by wind stress over the Amundsen Sea continental shelf.
Ice shelves in the Amundsen Sea are thinning rapidly as ocean currents bring warm water into...
