Geomorphology and shallow sub-sea-floor structures underneath the Ekström Ice Shelf, Antarctica

Oetting, Astrid; Smith, Emma C.; Arndt, Jan Erik; Dorschel, Boris; Drews, Reinhard; Ehlers, Todd A.; Gaedicke, Christoph; Hofstede, Coen; Klages, Johann P.; Kuhn, Gerhard; Lambrecht, Astrid; Läufer, Andreas; Mayer, Christoph; Tiedemann, Ralf; Wilhelms, Frank; Eisen, Olaf

doi:https://doi.org/10.5194/tc-16-2051-2022

Articles | Volume 16, issue 5

The Cryosphere, 16, 2051–2066, 2022

https://doi.org/10.5194/tc-16-2051-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue: The Weddell Sea and the ocean off Dronning Maud Land: unique...

The Cryosphere, 16, 2051–2066, 2022

https://doi.org/10.5194/tc-16-2051-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 16, issue 5

Research article

30 May 2022

Research article | 30 May 2022

Geomorphology and shallow sub-sea-floor structures underneath the Ekström Ice Shelf, Antarctica

Astrid Oetting et al.

Supplement

https://doi.org/10.5194/tc-16-2051-2022-supplement

Data sets

Sea floor bathymetry under Ekström Ice Shelf, Antarctica, from a compilation of seismic vibroseis data Emma Clare Smith, Gerhard Kuhn, Christoph Gaedicke, Reinhard Drews, Todd A. Ehlers, Dieter Franke, Coen Matthij Hofstede, Astrid Lambrecht, Andreas Läufer, Christoph Mayer, Ralf Tiedemann, and Olaf Eisen https://doi.org/10.1594/PANGAEA.907951

Sea floor depth under Ekström Ice Shelf, Antarctica, from seismic vibroseis surveys 2010-2018 Emma Clare Smith, Gerhard Kuhn, Christoph Gaedicke, Reinhard Drews, Todd A. Ehlers, Dieter Franke, Coen Matthij Hofstede, Astrid Lambrecht, Andreas Läufer, Christoph Mayer, Ralf Tiedemann, and Olaf Eisen https://doi.org/10.1594/PANGAEA.931928

Short summary

This study combines a variety of geophysical measurements in front of and beneath the Ekström Ice Shelf in order to identify and interpret geomorphological evidences of past ice sheet flow, extent and retreat. The maximal extent of grounded ice in this region was 11 km away from the continental shelf break. The thickness of palaeo-ice on the calving front around the LGM was estimated to be at least 305 to 320 m. We provide essential boundary conditions for palaeo-ice-sheet models.