From landslide characterization to nature reserve management: The “Scialimata Grande di Torre Alfina” landslide Geosite (Central Apennines, Italy)

Abstract Italy is characterized by widespread geomorphological instability, among which landslides leave impressive marks on the landscape. Nevertheless, landslide bodies may represent key sites for thematic and educational itineraries, especially in protected areas, where their management becomes an important issue. Our study focuses “Monte Rufeno Nature Reserve” (Central Apennines, Italy), iconic are present. Here, “Scialimata Grande di Torre Alfina” (SGTA) listed regional Geosite database. This work aims to propose a multiscale procedure analysis, terms of both hazard sources but also geoheritage enhancement opportunities natural reserves. After performing Landslide Susceptibility conditional Analysis (LSA) reserve territory, attention was focused SGTA, define properly its features morphodynamics. A multi-disciplinary approach adopted, applying remote sensing (UAV structure from motion, Photointerpretation) field survey (geomorphological GPS monitoring). From LSA, based drainage density, curvature, slope triggering factors, road trail susceptibility maps were derived, as base tools future risk assessments paths within reserve. At SGTA scale, monitoring showed displacement up 23 m during time interval between 2015 2018. The dynamics seem be driven alternating dry extremely wet periods; moreover, leaks aqueduct detachment area piping effects through clays have decreased substrate cohesion. complex influence Paglia River valley geometry hypothesized, underlining action different spatial scales (on-site off-site) environment (sediment connectivity, hydrology). Finally, appears highly representative geomorphic Reserve (i.e., scientific value) it could classified active geosite. Since site featured tourist trail, adequate strategies must considering value safety issues.