The glacial geomorphology of upper Godthabsfjord (Nuup Kangerlua) in southwest Greenland



Pearce, Danni M, Mair, Douglas WF ORCID: 0000-0001-7009-5461, Rea, Brice R, Lea, James M ORCID: 0000-0003-1885-0858, Schofield, J Edward, Kamenos, Nicholas and Schoenrock, Kathryn
(2018) The glacial geomorphology of upper Godthabsfjord (Nuup Kangerlua) in southwest Greenland. JOURNAL OF MAPS, 14 (2). pp. 45-55.

[img] Text
The glacial geomorphology of upper Godth bsfjord Nuup Kangerlua in southwest Greenland.pdf - Published version

Download (4MB)

Abstract

The Greenland Ice Sheet (GrIS) is known to have experienced widespread retreat over the last century. Information on outlet glacier dynamics, prior to this, are limited due to both a lack of observations and a paucity of mapped or mappable deglacial evidence which restricts our understanding of centennial to millennial timescale dynamics of the GrIS. Here we present glacial geomorphological mapping, for upper Godthåbsfjord, covering 5800 km2 at a scale of 1:92,000, using a combination of ASTER GDEM V2, a medium-resolution DEM (error < 10 m horizontal and < 6 m vertical accuracy), panchromatic orthophotographs and ground truthing. This work provides a detailed geomorphological assessment for the area, compiled as a single map, comprising of moraines, meltwater channels, streamlined bedrock, sediment lineations, ice-dammed lakes, trimlines, terraces, gullied sediment and marine limits. Whilst some of the landforms have been previously identified, the new information presented here improves our understanding of ice margin behaviour and can be used for future numerical modelling and landform dating programmes. Data also form the basis for palaeoglaciological reconstructions and contribute towards understanding of the centennial to millennial timescale record of this sector of the GrIS.

Item Type: Article
Uncontrolled Keywords: Geomorphology, tidewater glacier, Godthabsfjord, Greenland Ice Sheet, Little Ice Age, moraine
Depositing User: Symplectic Admin
Date Deposited: 23 Feb 2018 13:16
Last Modified: 19 Jan 2023 06:39
DOI: 10.1080/17445647.2017.1422447
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3018354