Grounding zone subglacial properties from calibrated active source seismic methods

• Main Authors: Horgan, Huw J., Haastrecht, Laurine, Alley, Richard B., Anandakrishnan, Sridhar, Christianson, Knut, Muto, Atsuhiro
• Format: Text
• Language: English
• Published: 2020
• Subjects: West Antarctica; Whillans; Whillans Ice Stream; Antarc*; Antarctica; Ice Shelf
• Online Access: https://doi.org/10.5194/tc-2020-147; https://tc.copernicus.org/preprints/tc-2020-147/

The grounding zone of Whillans Ice Stream, West Antarctica, exhibits an abrupt transition in basal properties from the grounded ice to the ocean cavity over distances of less than 0.5–1 km. Active source seismic methods reveal the grounded portion of the ice stream is underlain by a relatively stiff...