Recovering environmental information from steep Alpine ice – development of a lightweight decametric ice corer and first use at Grandes Jorasses (4208 m a.s.l., Mont-Blanc massif)
Journal: Geographica Helvetica
Year: 2025

Abstract. Ice aprons are very small (generally &lt; 0.1 km2) and thin (generally &lt; 10 m) perennial ice bodies located on steep slopes with a quasi-stationary shear regime, frozen to steep permafrost rock slopes. They occupy – mainly above the glacier equilibrium line altitude – a very small fraction of the ice-covered surface but, with their quasi-stationary shear regime, contain ice that is multi-centennial to multi-millennial in age, making them a potentially important glacial heritage. In