Il lago di Nemi e le sue rive. Indagini non invasive e prospettive di ricerca

As part of the Implementation Agreement for Collaboration "Documentation and Study Centre of the Museum of Roman Ships of Nemi (Rome) – Non-invasive investigations in Lake Nemi', the CNR-ISMAR carried out a campaign of non-invasive geophysical surveys to map the bottom of Lake Nemi in order to highlight the possible presence of structures of archaeological interest emerging from the bottom or buried. To this end, between September and October 2024, state-of-the-art equipment was used, namely a high-resolution multibeam echo sounder for morphobathymetric surveys of the lake bed (mebs) to obtain a new high-resolution bathymetry of the lake. This paper summarises the non-invasive methodologies used and provides an initial cartographic representation of the lake bed and a preliminary analysis of the data acquired. These data form the basis of a new historical-archaeological and geomorphological-sedimentological investigation to acquire new data on both the ways in which the lake surface was interfered with in ancient times and the morphological and environmental dynamics that have occurred over time. The new mapping of the lake basin has revealed the presence of several submerged landslides and has also made it possible to document the submerged remains of the shipbuilding yard and to hypothesise the exact position of the ships.