Grundlsee 4D: Surveying and assessment of holocene landslides and hydrogeological features of an alpine Lake

A hydrographic survey using multibeam echosounding and UAV-based photogrammetry produced a high-resolution bathymetric model of the lake. This detailed 3D model reveals a variety of previously unknown underwater landslides as well as hydrogeological structures of varying characteristics. In addition to the morphological parameters derived from this model, the analysis of sub-bottom profiling data and sediment cores provides further insights into the near-surface internal structure of the lake floor. The integration of all data sets aims to improve the understanding of the lake’s developmental history and hydrogeological conditions, the relationships between mass movements and their triggers (e.g., earthquakes), as well as the impact of climatic changes on sedimentary systems in this alpine environment.