Grounding zone subglacial properties from calibrated active-source seismic methods

• Published in: The Cryosphere
• Main Authors: H. J. Horgan, L. van Haastrecht, R. B. Alley, S. Anandakrishnan, L. H. Beem, K. Christianson, A. Muto, M. R. Siegfried
• Format: Article in Journal/Newspaper
• Language: English
• Published: Copernicus Publications 2021
• Subjects: Environmental sciences; GE1-350; Geology; QE1-996.5; West Antarctica; Whillans; Whillans Ice Stream; Antarc*; Antarctica; Ice Shelf; The Cryosphere
• Online Access: https://doi.org/10.5194/tc-15-1863-2021; https://doaj.org/article/119a4956ddb44d3c8055b233ef7ef37f

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 downglacier-most grounded portion of the ice stream is underlain by a...