Articles | Volume 18, issue 5
Ocean Sci., 18, 1339–1359, 2022
https://doi.org/10.5194/os-18-1339-2022
Ocean Sci., 18, 1339–1359, 2022
https://doi.org/10.5194/os-18-1339-2022
Research article
 | Highlight paper
14 Sep 2022
Research article  | Highlight paper | 14 Sep 2022

Hydrography, circulation, and response to atmospheric forcing in the vicinity of the central Getz Ice Shelf, Amundsen Sea, Antarctica

Vår Dundas et al.

Data sets

Physical oceanography from mooring UIB3 in the Amundsen Sea E. Darelius, I. Fer, K. Assmann, T. W. Kim, and V. Dundas https://doi.org/10.21335/NMDC-518522938

Physical oceanography from Mooring UiB1 and UiB4 in the Amundsen Sea E. Darelius, I. Fer, K. Assmann, and T. W. Kim https://doi.org/10.21335/NMDC-1721053841

Water temperature, salinity, oxygen, and other oceanographic data collected by CTD from a mooring deployed and recovered by the research vessel ice breaker Araon in the Amundsen Sea from 2016-01-28 to 2018-01-18 (NCEI Accession 0206672) A. K. Wåhlin, J. Rolandsson, and K. Assmann https://doi.org/10.25921/6pwp-1791

Water temperature, salinity, and current velocity collected at mooring S1 in the Amundsen Sea from 2010-02-15 to 2016-01-17 (NCEI Accession 0211128) A. K. Wåhlin, L. Arneborg, K. Assman, O. Kalén, M. Melin, J. Rolandsson, and C. Stranne https://www.ncei.noaa.gov/archive/accession/0211128

Temperature, salinity and other variables collected from discrete sample and profile observations using CTD, bottle and other instruments from the NATHANIEL B. PALMER in the South Pacific Ocean from 1994-02-14 to 1994-04-05 (NCEI Accession 0116067) S. S. Jacobs, W. M. Smethie Jr., P. Schlosser, and B. Loose https://doi.org/10.3334/cdiac/otg.clivar_ross_sea_320619940214

Temperature, salinity and other variables collected from discrete sample and profile observations using CTD, bottle and other instruments from the NATHANIEL B. PALMER in the South Pacific Ocean from 2000-02-15 to 2000-03-24 (NCEI Accession 0116066) S. S. Jacobs, W. M. Smethie Jr., P. Schlosser, and B. Loose https://doi.org/10.3334/cdiac/otg.clivar_ross_sea_320620000215

Temperature, salinity and other variables collected from discrete sample and profile observations using CTD, bottle and other instruments from NATHANIEL B. PALMER in the South Pacific Ocean and Southern Oceans from 2007-02-03 to 2007-03-26 (NCEI Accession S. S. Jacobs, C. F. Giulivi, and W. M. Smethie Jr. https://doi.org/10.3334/cdiac/otg.320620070203

CTD data to observe Circumpolar Deep Water (CDW) in the Amundsen Sea in 2015/2016 T. W. Kim https://doi.org/10.22663/KOPRI-KPDC-00000634.2

CTD data to observe Circumpolar Deep Water (CDW) in the Amundsen Sea in 2017/2018 T. W. Kim https://doi.org/10.22663/KOPRI-KPDC-00000907.1

Video supplement

Movie S1 V. Dundas, E. Darelius, K. Daae, N. Steiger, Y. Nakayama, and T. W. Kim https://doi.org/10.5446/56380

Download
Executive editor
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.
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.