Articles | Volume 13, issue 7
The Cryosphere, 13, 1959–1981, 2019
https://doi.org/10.5194/tc-13-1959-2019
The Cryosphere, 13, 1959–1981, 2019
https://doi.org/10.5194/tc-13-1959-2019

Research article 17 Jul 2019

Research article | 17 Jul 2019

Past water flow beneath Pine Island and Thwaites glaciers, West Antarctica

James D. Kirkham et al.

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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to minor revisions (review by editor) (21 Jun 2019) by Chris R. Stokes
AR by Anna Mirena Feist-Polner on behalf of the Authors (26 Jun 2019)  Author's response
ED: Publish as is (26 Jun 2019) by Chris R. Stokes
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Short summary
A series of huge (500 m wide, 50 m deep) channels were eroded by water flowing beneath Pine Island and Thwaites glaciers in the past. The channels are similar to canyon systems produced by floods of meltwater released beneath the Antarctic Ice Sheet millions of years ago. The spatial extent of the channels formed beneath Pine Island and Thwaites glaciers demonstrates significant quantities of water, possibly discharged from trapped subglacial lakes, flowed beneath these glaciers in the past.