Articles | Volume 16, issue 5
https://doi.org/10.5194/tc-16-2051-2022
https://doi.org/10.5194/tc-16-2051-2022
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, Emma C. Smith, Jan Erik Arndt, Boris Dorschel, Reinhard Drews, Todd A. Ehlers, Christoph Gaedicke, Coen Hofstede, Johann P. Klages, Gerhard Kuhn, Astrid Lambrecht, Andreas Läufer, Christoph Mayer, Ralf Tiedemann, Frank Wilhelms, and Olaf Eisen

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Cited articles

Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung: Neumayer III and Kohnen Station in Antarctica operated by the Alfred Wegener Institute, Journal of large-scale research facilities, 2, A85, https://doi.org/10.17815/jlsrf-2-152, 2016. a
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung: Polar Research and Supply Vessel POLARSTERN Operated by the Alfred-Wegener-Institute, Journal of large-scale research facilities, 3, A119, https://doi.org/10.17815/jlsrf-3-163, 2017. a, b, c, d
Arndt, J. E. and Kuhn, G.: Profile of sediment echo sounding during POLARSTERN cruise PS96 (ANT-XXXI/2 FROSN) with links to ParaSound data files, PANGAEA [data set], https://doi.org/10.1594/PANGAEA.860442, 2016. a
Arndt, J. E., Schenke, H. W., Jakobsson, M., Nitsche, F.-O., Buys, G., Goleby, B., Rebesco, M., Bohoyo, F., Hong, J. K., Black, J., Greku, R., Udintsev, G. B., Barrios, F., Reynoso-Peralta, W., Taisei, M., and Wigley, R.: The International Bathymetric Chart of the Southern Ocean (IBCSO) Version 1.0–A new bathymetric compilation covering circum‐Antarctic waters, Geophys. Res. Lett., 40, 3111–3117, 2013. a, b, c, d
Arndt, J. E., Hillenbrand, C.-D., Grobe, H., Kuhn, G., and Wacker, L.: Evidence for a dynamic grounding line in outer Filchner Trough, Antarctica, until the early Holocene, Geology, 45, 1035–1038, https://doi.org/10.1130/G39398.1, 2017. a, b, c
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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.
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