Nat. Hazards Earth Syst. Sci., 18, 2367–2386, 2018 https://doi.org/10.5194/nhess-18-2367-2018 © Author(s) 2018. This work is distributed under the Creative Commons Attribution 4.0 License. Rainfall events with shallow landslides in the Entella catchment, Liguria, northern Italy Anna Roccati1, Francesco Faccini2, Fabio Luino1, Laura Turconi1, and Fausto Guzzetti3 1Istituto di Ricerca per la Protezione Idrogeologica, Consiglio Nazionale delle Ricerche, Turin branch office, Strada delle Cacce 73, 10135 Torino, Italy 2Dipartimento di Scienze della Terra, dell’Ambiente e della Vita, Università di Genova, Corso Europa 26, 16132 Genova, Italy 3Istituto di Ricerca per la Protezione Idrogeologica, Consiglio Nazionale delle Ricerche, Head office, Via Madonna Alta 126, 06128 Perugia, Italy Correspondence: Anna Roccati (
[email protected]) Received: 4 December 2017 – Discussion started: 2 January 2018 Revised: 20 August 2018 – Accepted: 27 August 2018 – Published: 13 September 2018 Abstract. In recent decades, the Entella River basin, in the its high-relief topography, geological and geomorphological Liguria Apennines, northern Italy, was hit by numerous in- settings, meteorological and rainfall conditions, and human tense rainfall events that triggered shallow landslides and interference. Analysis of the antecedent rainfall conditions earth flows, causing casualties and extensive damage. We an- for different periods, from 3 to 15 days, revealed that the an- alyzed landslide information obtained from different sources tecedent rainfall did not play a significant role in the initiation and rainfall data recorded in the period 2002–2016 by rain of landslides in the Entella catchment. We expect that our gauges scattered throughout the catchment, to identify the findings will be useful in regional to local landslides early event rainfall duration, D (in h), and rainfall intensity, I warning systems, and for land planning aimed at reducing (in mm h−1), that presumably caused the landslide events.