Articles | Volume 15, issue 4
Research article
19 Apr 2021
Research article |  | 19 Apr 2021

Grounding zone subglacial properties from calibrated active-source seismic methods

Huw J. Horgan, Laurine van Haastrecht, Richard B. Alley, Sridhar Anandakrishnan, Lucas H. Beem, Knut Christianson, Atsuhiro Muto, and Matthew R. Siegfried

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Cited articles

Aki, K. and Richards, P. G.: Quantitive Seismology. Theory and Methods, W. H. Freeman and Co., San Francisco, USA, 1980. a
Anandakrishnan, S.: Dilatant till layer near the onset of streaming flow of Ice Stream C, West Antarctica, determined by AVO (amplitude vs offset) analysis, Ann. Glaciol., 36, 283–286,, 2003a. a
Anandakrishnan, S.: Dilatant till layer near the onset of streaming flow of Ice Stream C, determined by AVO (Amplitude vs. Offset) analysis, Ann. Glaciol., 36, 283–287, 2003b. a
Anandakrishnan, S.: Original Seismic Data from the Grounding Line of Whillans Ice Stream, ScholarSphere,, 2021. a
Anandakrishnan, S., Voigt, D. E., Alley, R. B., and King, M. A.: Ice stream D flow speed is strongly modulated by the tide beneath the Ross Ice Shelf, Geophys. Res. Lett., 30, 1361,, 2003. a
Short summary
The grounding zone marks the transition from a grounded ice sheet to a floating ice shelf. Like Earth's coastlines, the grounding zone is home to interactions between the ocean, fresh water, and geology but also has added complexity and importance due to the overriding ice. Here we use seismic surveying – sending sound waves down through the ice – to image the grounding zone of Whillans Ice Stream in West Antarctica and learn more about the nature of this important transition zone.