Glacial and periglacial geomorphology of central Troms and Finnmark county, Arctic Norway

• Main Authors: Leigh, J. R., Evans, D. J. A., Stokes, C. R., Andreassen, L. M., Carr, R. J.
• Format: Text
• Language: unknown
• Published: Taylor & Francis 2021
• Subjects: 59999 Environmental Sciences not elsewhere classified; FOS Earth and related environmental sciences; Ecology; FOS Biological sciences; 20199 Astronomical and Space Sciences not elsewhere classified; FOS Physical sciences; Sociology; FOS Sociology; 69999 Biological Sciences not elsewhere classified; 80699 Information Systems not elsewhere classified; FOS Computer and information sciences; Cancer; Inorganic Chemistry; FOS Chemical sciences; Plant Biology; Computational Biology; Arctic; Norway; Finnmark; Troms
• Online Access: https://dx.doi.org/10.6084/m9.figshare.14963524.v1; https://tandf.figshare.com/articles/journal_contribution/Glacial_and_periglacial_geomorphology_of_central_Troms_and_Finnmark_county_Arctic_Norway/14963524/1

Here we present a glacial and periglacial geomorphological map of a ∼6800 km 2 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.