Grounding zone subglacial properties from calibrated active-source seismic methods

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

doi:https://doi.org/10.5194/tc-15-1863-2021

Articles | Volume 15, issue 4

https://doi.org/10.5194/tc-15-1863-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/tc-15-1863-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

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

Data sets

Original Seismic Data from the Grounding Line of Whillans Ice Stream Sridhar Anandakrishnan https://doi.org/10.26207/zx1s-9e98

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.