NDLI: The impact of glacier geometry on meltwater plume structure and submarine melt in Greenland fjords

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The impact of glacier geometry on meltwater plume structure and submarine melt in Greenland fjords

Content Provider	Semantic Scholar
Author	Carroll, Dustin Sutherland, David A. Hudson, Benjamin Moon, Twila Alexandra Catania, Ginny A. Shroyer, Emily L. Nash, Jonathan Bartholomaus, Timothy C. Felikson, Denis Stearns, Leigh Noël, B. P. Y. Broeke, Michiel Van Den
Copyright Year	2016
Abstract	Meltwater from the Greenland Ice Sheet often drains subglacially into fjords, driving upwelling plumes at glacier termini. Ocean models and observations of submarine termini suggest that plumes enhance melt and undercutting, leading to calving and potential glacier destabilization. Here we systematically evaluate how simulated plume structure and submarine melt during summer months depends on realistic ranges of subglacial discharge, glacier depth, and ocean stratification from 12 Greenland fjords. Our results show that grounding line depth is a strong control on plume-induced submarine melt: deep glaciers produce warm, salty subsurface plumes that undercut termini and shallow glaciers produce cold, fresh surface-trapped plumes that can overcut termini. Due to sustained upwelling velocities, plumes in cold, shallow fjords can induce equivalent depth-averaged melt rates compared to warm, deep fjords. These results detail a direct ocean-ice feedback that can affect the Greenland Ice Sheet.
Starting Page	9739
Ending Page	9748
Page Count	10
File Format	PDF HTM / HTML
DOI	10.1002/2016GL070170
Volume Number	43
Alternate Webpage(s)	https://kuscholarworks.ku.edu/bitstream/handle/1808/25494/Carroll_AGU_2016.pdf?isAllowed=y&sequence=1
Alternate Webpage(s)	https://static1.squarespace.com/static/58091537579fb31efea6dcad/t/580b3b6429687f36755ed895/1477131112319/Carroll_2016.pdf
Alternate Webpage(s)	https://research-information.bristol.ac.uk/files/103825051/D41955C4_7B8F_40FE_8D9D_75DB16ABBBB8.pdf
Alternate Webpage(s)	https://doi.org/10.1002/2016GL070170
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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