Ice-free geomorphometry of Queen Maud Land, East Antarctica: 1. Sôya Coast

Geomorphometric modeling and mapping of ice-free Antarctic areas is promising for obtaining new quantitative knowledge about the topography of these unique landscapes and for the further use of morphometric information in Antarctic research. Within the framework of a project of creating a physical geographical thematic scientific reference geomorphometric atlas of ice-free terrains of Antarctica, we performed geomorphometric modeling and mapping of key ice-free areas of the Sôya Coast (the east coast of Lützow-Holm Bay, Queen Maud Land, East Antarctica). These include the Flatvaer (Ongul) Islands, Langhovde Hills, Breidvågnipa, Skarvsnes Foreland, Skallen Hills, and Skallevikhalsen Hills. As input data for geomorphometric modeling and mapping, we used five fragments of the Reference Elevation Model of Antarctica. For the six ice-free areas and adjacent glaciers, we derived models and maps of eleven most scientifically important morphometric variables (i.e., slope, aspect, horizontal curvature, vertical curvature, minimal curvature, maximal curvature, catchment area, topographic wetness index, stream power index, total insolation, and wind exposition index). The obtained models and maps describe the ice-free topography of the Sôya Coast in a rigorous, quantitative, and reproducible manner. New morphometric data can be useful for further geological, geomorphological, glaciological, ecological, and hydrological studies of this region.