Research Data Leeds Repository

Greenland ice-marginal lakes: present and future status dataset

Carrivick, Jonathan L. (2022) Greenland ice-marginal lakes: present and future status dataset. University of Leeds. [Dataset] https://doi.org/10.5518/1107

Dataset description

Ice-marginal lakes can affect glacier dynamics but are ignored in studies of the evolution of the Greenland ice sheet (GrIS) and of peripheral mountain glaciers and ice caps (PGICs). Here we show that lakes occupy 10 % of the GrIS ice margin and occur on 5 % of PGICs. Ice velocity at the GrIS margin is enhanced by ~ 25 % at lakes versus on land. Mean ice discharge into lakes is ~ 4.9 Gt.yr, which is ~1 % of ice discharged through marine termini. We locate thousands of subglacial overdeepenings within which 7,404 km2 of future lakes could form, all of which will be ice-marginal at some time. Future lakes in the west and east will be restricted to the margin of the GrIS and within alpine valleys, respectively. This status and possible future leads us to contend that lakes should be incorporated into projections of Greenland ice loss.

Keywords:	Greenland, ice sheet, glacier, proglacial, lake, meltwater, geography, geomorphology, glaciology
Subjects:	F000 - Physical sciences > F800 - Physical geographical sciences > F840 - Physical geography F000 - Physical sciences > F800 - Physical geographical sciences > F840 - Physical geography > F842 - Geomorphology F000 - Physical sciences > F700 - Science of aquatic & terrestrial environments > F780 - Glaciology & cryospheric systems
Divisions:	Faculty of Environment > School of Geography
Related resources:	Location Type https://doi.org/10.1029/2022GL099276 Publication
License:	Creative Commons Attribution 4.0 International (CC BY 4.0)
Date deposited:	31 May 2022 08:13
URI:	http://archive.researchdata.leeds.ac.uk/id/eprint/972
Additional details Additional details Creators: Creators ORCID Other ID Email Primary affiliation Primary affiliation ID Primary affiliation ID type Secondary affiliation Secondary affiliation ID Secondary affiliation ID type Carrivick, Jonathan L. https://orcid.org/0000-0002-9286-5348 University of Leeds https://ror.org/024mrxd33 ROR Type of data: Dataset Research funders: NERC Grant numbers: NE/L002574/1 Publication date: 2022 Resource language: English Publisher: University of Leeds Contact Email Address: j.l.carrivick@leeds.ac.uk Last Modified: 07 Jun 2022 08:00

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Documentation

README [3kB] README [3kB] README [3kB] Visible to: Anyone File name: readme.txt Content type: Documentation Mime-Type: text/plain License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 3kB

Data

Greenland shape files [3MB] Greenland shape files [3MB] Greenland shape files [3MB] Visible to: Anyone File name: SI_Greenland_Lakes_JLC.zip Content type: Data Description: a single zipped directory containing shapefiles of lake and marine boundaries (lines), ice discharge into lakes (points), lake catchments (polygons) and overdeepenings/possible future lakes (polygons) Mime-Type: application/zip License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 3MB