Articles | Volume 14, issue 9
The Cryosphere, 14, 2883–2908, 2020
https://doi.org/10.5194/tc-14-2883-2020
The Cryosphere, 14, 2883–2908, 2020
https://doi.org/10.5194/tc-14-2883-2020

Research article 09 Sep 2020

Research article | 09 Sep 2020

Revealing the former bed of Thwaites Glacier using sea-floor bathymetry: implications for warm-water routing and bed controls on ice flow and buttressing

Kelly A. Hogan et al.

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Short summary
The sea-floor geometry around the rapidly changing Thwaites Glacier is a key control on warm ocean waters reaching the ice shelf and grounding zone beyond. This area was previously unsurveyed due to icebergs and sea-ice cover. The International Thwaites Glacier Collaboration mapped this area for the first time in 2019. The data reveal troughs over 1200 m deep and, as this region is thought to have only ungrounded recently, provide key insights into the morphology beneath the grounded ice sheet.