High-resolution geomorphological mapping of rock glaciers

Ballicas rock glacier, Chilean Central Andes

Abstract

Using high-resolution data obtained by unmanned aerial vehicles (UAVs), a detailed analysis of the morphology of the Ballicas rock glacier in the Central Andes of Chile was carried out. The results reveal that the rock glacier, previously considered as a single cryoform, is actually composed of three distinct entities. Various geomorphological structures, such as frontal and lateral slopes, ridges and grooves, were identified and characterized. The analysis of slope range concentrations suggests a variability in the activity and stability of the different parts of the glacier. These findings highlight the importance of using highresolution remote sensing technologies for an accurate characterization of rock glaciers and contributing to a better understanding of their evolution in the context of climate change.