Articles | Volume 11, issue 3
https://doi.org/10.5194/tc-11-1131-2017
https://doi.org/10.5194/tc-11-1131-2017
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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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.