Elsabreen and Ferdinandbreen, Petuniabukta Glacier Outlines LIA-2024_McCerery_2025

This is a dataset of Elasbreen and Ferdinandbreen, Svalbard glacier outlines from the Little Ice Age (LIA) to 2024 in .xshp format. Methods for aerial extents in: McCerery et al. (2025) 'Retreat and volume loss of two rapidly vanishing Svalbard glaciers since 1938: Elsabreen and Ferdinandbreen, Petuniabukta' Glacier areal extents since the LIA were mapped digitally in ArcGIS Pro (version 3.3.0) from previously published glacier outlines, aerial photographs and satellite images. The LIA extent was based on the prominent LIA latero-frontal moraine limits as identified on the Norwegian Polar Institute (NPI) 2009 aerial photographs. The 1938 glacier extents are from Geymen and others (2022), based on NPI oblique aerial photographs. Glacier outlines in 1960 and 1990 were taken from Małecki (2013), who mapped them from a NPI topographic map and aerial photographs, respectively. The 2009 extents were mapped from NPI aerial photographs accessed from TopoSvalbard (https://toposvalbard.npolar.no/). Satellite imagery was used to map glacier outlines in 2013 (Landsat 7 ETM+ image, captured 13 July 2013), 2021 (ArcGIS Pro Basemap imagery), 2023 and 2024 (Sentinel-2 imagery captured 2 August 2023 and 9 August 2024, respectively).