Combined diurnal variations of discharge and hydrochemistry of the Isunnguata Sermia outlet, Greenland Ice Sheet

Graly, Joseph; Harrington, Joel; Humphrey, Neil

doi:https://doi.org/10.5194/tc-11-1131-2017

Articles | Volume 11, issue 3

https://doi.org/10.5194/tc-11-1131-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/tc-11-1131-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 11, issue 3

Research article

|

05 May 2017

Research article |

| 05 May 2017

Combined diurnal variations of discharge and hydrochemistry of the Isunnguata Sermia outlet, Greenland Ice Sheet

Joseph Graly, Joel Harrington, and Neil Humphrey

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Final revised paper (published on 05 May 2017)
Preprint (discussion started on 12 Jul 2016)

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Review of Isunnguata Sermia manuscript', Anonymous Referee #1, 18 Aug 2016
- AC3: 'Reply to Anonymous Referee', Joseph Graly, 24 Jan 2017
RC2: 'Review: Combined diurnal variations... Graly and others', Robert Bingham, 16 Nov 2016
AC1: 'Revised Manuscript', Joseph Graly, 24 Jan 2017
- AC4: 'Reply to Robert Bingham', Joseph Graly, 24 Jan 2017
AC2: 'Revised Manuscript - Track Changes', Joseph Graly, 24 Jan 2017

Peer-review completion

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

AR by Joseph Graly on behalf of the Authors (13 Feb 2017) Author's response Manuscript

ED: Publish subject to technical corrections (21 Mar 2017) by Robert Bingham

AR by Joseph Graly on behalf of the Authors (04 Apr 2017) Author's response Manuscript

Short summary

At a major outlet of the Greenland Ice Sheet in West Greenland, we find that the chemical solutes in the emerging subglacial waters are out of phase with water discharge and can spike in concentration during waning flow. This suggests that the subglacial waters are spreading out across a large area of the glacial bed throughout the day, stimulating chemical weathering beyond the major water distribution channels.