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Glacial and periglacial geomorphological map of central Troms and Finnmark county, Arctic Norway

Lookup NU author(s): Dr Rachel Carr

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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


Abstract

Here we present a glacial and periglacial geomorphological map of a ∼6800 km2 region of central Troms and Finnmark county, Arctic Norway. The map is presented at a 1:115,000 scale with the aim of characterising the spatial distribution of glacial and periglacial landforms and facilitating the reconstruction of the glacial history of the region during the latter stages of deglaciation from the Last Glacial Maximum and into the Holocene. Mapping was conducted predominantly by manual digitisation of landforms using a combination of Sentinel-2A/2B satellite imagery (10 m pixel resolution), vertical aerial photographs (<1 m pixel resolution), and Digital Elevation Models (10 and 2 m pixel resolution). Over 20,000 individual features have been mapped and include moraines (subdivided into major and minor moraines), ridges within areas of discrete debris accumulations (DDAs), flutings, eskers, irregular mounded terrain, lineations, glacially streamlined bedrock, possible glacially streamlined terrain, pronival ramparts, rock glaciers (subdivided into valley wall and valley floor, and rock glacierised moraines), lithalsas, contemporary glaciers and lakes. The map records several noteworthy large moraine assemblages within individual valleys, forming inset sequences from pre-Younger Dryas limits up to the 2018/19 ice margins and represents a valuable dataset for reconstructing Holocene glacial and periglacial activity.


Publication metadata

Author(s): Leigh JR, Stokes CR, Evans DJA, Andreassen LM, Carr JR

Publication type: Article

Publication status: Published

Journal: Journal of Maps

Year: 2021

Volume: 17

Issue: 2

Pages: 348-366

Online publication date: 12/07/2021

Acceptance date: 21/06/2021

Date deposited: 28/06/2021

ISSN (electronic): 1744-5647

Publisher: Taylor & Francis

URL: https://doi.org/10.1080/17445647.2021.1950580

DOI: 10.1080/17445647.2021.1950580


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Funding

Funder referenceFunder name
NE/L002590/1
NERC

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