EARFLOW
Monitoring bedload transport, debris flows and lahars through the development of early warning systems in volcanic and alpine areas
Durata: 01/01/2018 a 01/12/2021
Finanziato da: Ministero degli affari esteri e della cooperazione Internazionale (MAECI) - Agencia mexicana de cooperación internacional para el desarrollo (AMEXCID)
Website: https://uploads.knightlab.com/storymapjs/be2393f5b821b88edfcd53c6f0561323/lahar-o-colate-detritiche/index.html
Descrizione
This project, aims at developing standardized monitoring and warning systems based on low-cost seismic sensors, to adopt in both alpine and volcanic environment. The study of sediment transport processes is of paramount relevance for risk assessment and land use planning. During summer, several transport events ranging from floods with intense bedload transport to debris flows are reported in many alpine basins. This is the case of the Gadria basin (BZ, Italia), where at least one debris flow and several small floods per year occur. Lahars are similar processes to debris flows taking place in volcanic environments, due to snow- and ice-melting during eruptions or intense rainfall events in the post-eruptive phase. During the rainy season, tens of hyperconcentrated flows and lahars occur along the active channels of Volcán de Colima, Messico. Seismic sensors installed along the channel can detect ground vibrations produced by bedload transport and debris flows. Monitoring data of these phenomena are precious for the calibration of numerical models and for the development of warning systems.