Quantification of seasonal and diurnal dynamics of subglacial channels using seismic observations on an Alpine glacier

Nanni, Ugo; Gimbert, Florent; Vincent, Christian; Gräff, Dominik; Walter, Fabian; Piard, Luc; Moreau, Luc

doi:https://doi.org/10.5194/tc-14-1475-2020

Articles | Volume 14, issue 5

https://doi.org/10.5194/tc-14-1475-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/tc-14-1475-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 14, issue 5

Research article

| Highlight paper

|

05 May 2020

Research article | Highlight paper |

| 05 May 2020

Quantification of seasonal and diurnal dynamics of subglacial channels using seismic observations on an Alpine glacier

Ugo Nanni, Florent Gimbert, Christian Vincent, Dominik Gräff, Fabian Walter, Luc Piard, and Luc Moreau

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Final revised paper (published on 05 May 2020)
Supplement to the final revised paper
Preprint (discussion started on 08 Nov 2019)
Supplement to the preprint

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Review of “Seasonal and Diurnal Dynamics of Subglacial Channels: Observations Beneath an Alpine Glacier”', Anonymous Referee #1, 21 Dec 2019
- AC1: 'Responses to RC1', Ugo Nanni, 11 Feb 2020
RC2: 'Review', Anonymous Referee #2, 01 Jan 2020
- AC2: 'Responses to RC2', Ugo Nanni, 11 Feb 2020

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Publish subject to revisions (further review by editor and referees) (14 Feb 2020) by Nanna Bjørnholt Karlsson

ED: Publish subject to minor revisions (review by editor) (25 Mar 2020) by Nanna Bjørnholt Karlsson

AR by Ugo Nanni on behalf of the Authors (26 Mar 2020) Author's response Manuscript

ED: Publish as is (27 Mar 2020) by Nanna Bjørnholt Karlsson

AR by Ugo Nanni on behalf of the Authors (27 Mar 2020)

Short summary

Our study addresses key questions on the subglacial drainage system physics through a novel observational approach that overcomes traditional limitations. We conducted, over 2 years, measurements of the subglacial water-flow-induced seismic noise and of glacier basal sliding speeds. We then inverted for the subglacial channel's hydraulic pressure gradient and hydraulic radius and investigated the links between the equilibrium state of subglacial channels and glacier basal sliding.