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Owsianowski, Nils; Richter, Claudio (2020): Glacial dynamics, distribution of cryobethic algae and fish and a 3D model of the grounding zone of a tidewater cliff in front of Coats Land's coast. PANGAEA, https://doi.org/10.1594/PANGAEA.924822

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Abstract:
The grounding zone of the Antarctic ice-shelf – the ice-sheet, bed, and grounding zone – is largely unknown. We used a ROV (remotely operated vehicle) to explore the grounding zone of a tidewater cliff in front of Coats Land's coast during Polarstern expedition PS111 in 2017/2018 to the southern Weddell Sea. A two hour dive led down the 148 m vertical ice wall to the seabed, followed by a 90 m inspection along the grounding zone, and an approximately 230 m transect of the seafloor normal to the ice front. Available data cover aspects of glacial dynamics, a 3D model of the grounding zone as well as the distribution of cryobethic algae and fish, associated to the ice front. Oceanographic profiles, obtained from CTD measurements, include pH, oxygen, chlorophyll, density, and par beside the standard parameter pressure, temperature, and salinity. The video clip summarizes the ROV dive and emphasizes the highlights.
Keyword(s):
Antarctica; grounding zone; Ice Sheet; ROV (remotely operated vehicle)
Supplement to:
Owsianowski, Nils; Richter, Claudio (2021): Exploration of an ice-cliff grounding zone in Antarctica reveals frozen-on meltwater and high productivity. Communications Earth & Environment, 2(1), 99, https://doi.org/10.1038/s43247-021-00166-y
Related to:
Owsianowski, Nils; Schröder, Henning; Maier, Sandra; Richter, Claudio (2019): Sea-floor videos (benthos) along ROV profile PS111_117-1 during POLARSTERN cruise PS111, links to videos. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.909256
Schröder, Michael (2018): The Expedition PS111 of the Research Vessel POLARSTERN to the southern Weddell Sea in 2018. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 718, 161 pp, https://doi.org/10.2312/BzPM_0718_2018
Project(s):
Coverage:
Median Latitude: -77.587140 * Median Longitude: -34.566887 * South-bound Latitude: -77.650370 * West-bound Longitude: -34.735500 * North-bound Latitude: -77.534660 * East-bound Longitude: -34.473900
Date/Time Start: 2018-02-23T00:00:00 * Date/Time End: 2018-02-23T23:00:00
Size:
9 datasets

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Datasets listed in this bundled publication

  1. Owsianowski, N; Richter, C (2020): 3D model of the grounding zone of the Antarctic ice-sheet create from ROV dive PS111_117-1. https://doi.org/10.1594/PANGAEA.924772
  2. Owsianowski, N; Richter, C (2020): Digitized ice edge form of the grounding zone of the Antarctic ice-sheet on 2015-12-31 with extrapolation into the future using ice edge velocities. https://doi.org/10.1594/PANGAEA.924821
  3. Owsianowski, N; Richter, C (2020): Digitized ice edge form of the grounding zone of the Antarctic ice-sheet on 2018-02-18. https://doi.org/10.1594/PANGAEA.924815
  4. Owsianowski, N; Richter, C (2020): Distribution of cryobethic algae during ROV dive PS111_117-1 to the grounding zone of the Antarctic ice-sheet. https://doi.org/10.1594/PANGAEA.924770
  5. Owsianowski, N; Richter, C (2020): Physical oceanography during ROV dive PS111_117-1 to the grounding zone of the Antarctic ice-sheet. https://doi.org/10.1594/PANGAEA.924823
  6. Owsianowski, N; Richter, C (2020): Physical oceanography during one part of a ROV dive PS111_117-1 to the grounding zone of the Antarctic ice-sheet. https://doi.org/10.1594/PANGAEA.924769
  7. Owsianowski, N; Richter, C (2020): Reverse ice flow calculations based on vector field ice flow data. https://doi.org/10.1594/PANGAEA.924820
  8. Owsianowski, N; Richter, C (2020): Tide level during ROV dive PS111_117-1 to the grounding zone of the Antarctic ice-sheet. https://doi.org/10.1594/PANGAEA.924774
  9. Owsianowski, N; Richter, C (2020): Video footage highlights of ROV dive PS111_117-1 to the grounding zone of the Antarctic ice-sheet. https://doi.org/10.1594/PANGAEA.924776