Among the many mitigation measures available for reducing the risk to life related to landslides, early warning systems certainly constitute a significant option available to the authorities in charge of risk management and governance. Landslide early warning systems (LEWS) are non-structural risk mitigation measures applicable at different scales of analysis: slope and regional. Systems addressing single landslides at slope scale can be named local LEWS (Lo-LEWS), systems operating over wide areas at regional scale are referred to as territorial systems (Te-LEWSs). An initial key difference between Lo-LEWSs and Te-LEWSs is the knowledge “a priori” of the areas affected by future landsliding. When the location of future landslides is unknown and the area of interest extends beyond a single slope, only Te-LEWS can be employed. Conversely, Lo-LEWSs are typically adopted to cope with the risk related to one or more known well-identified landslides.

Independently by the scale of analysis, the structure of LEWS can be schematized as an interrelation of four main modules: setting, modelling, warning, response. However, the definition of the elements of these modules and the aims of the warnings/alerts issued considerably vary as a function of the scale at which the system is employed.

The session focuses on landslide early warning systems (LEWSs) at both regional and local scales. The session wishes to highlight operational approaches, original achievements and developments useful to operate reliable (efficient and effective) local and territorial LEWS. Moreover, the different schemes describing the structure of a LEWS available in literature clearly highlight the importance of both social and technical aspects in the design and management of such systems.

For the above-mentioned reasons, contributions addressing the following topics are welcome:
• rainfall thresholds definition;
• monitoring systems for early warning purposes;
• warning models for warning levels issuing;
• performance analysis of landslide warning models;
• communication strategies;
• emergency phase management;
• landslide risk perception.

Co-organized as SSS2.16
Convener: Luca Piciullo | Co-conveners: Søren Boje, Stefano Luigi Gariano, Samuele Segoni
| Fri, 12 Apr, 14:00–15:45
Room M2
| Attendance Fri, 12 Apr, 10:45–12:30
Hall X3

Attendance time: Friday, 12 April 2019, 10:45–12:30 | Hall X3

Chairperson: Luca Piciullo, Samuele Segoni, Stefano Luigi Gariano, Søren Boje
X3.128 |
Abhirup Dikshit and Neelima Satyam
X3.129 |
Xin Liang, Kunlong Yin, Lixia Chen, Deying Li, Lei Gui, and Xuemei Liu
X3.130 |
Arzu Arslan Kelam, Mustafa Kerem Koçkar, and Haluk Akgün
X3.131 |
Laurent Baillet, Fabrice Guyoton, Eric Larose, David Amitrano, Etienne Rey, Agnès Helmstetter, Denis Jongmans, Mathieu Lebreton, Gaelle Leroy, and Guilhem Scheiblin
X3.132 |
Danilo Godone, Paolo Allasia, Daniele Giordan, Diego Guenzi, and Giorgio Lollino
X3.133 |
Anna-Lena Seith, Stefan Steger, Alexander Brenning, Christian Kofler, Marc Zebisch, and Stefan Schneiderbauer
X3.136 |
Samuele Segoni, Veronica Tofani, Ascanio Rosi, Filippo Catani, and Nicola Casagli
X3.137 |
Mateja Jemec Auflič and Jasna Šinigoj
X3.138 |
Ascanio Rosi, Alessandro Battistini, Guglielmo Rossi, Samuele Segoni, Filippo Catani, and Nicola Casagli
X3.141 |
Rosa M Palau, Marc Berenguer, Marcel Hürlimann, and Daniel Sempere-Torres
X3.142 |
Kamilla S. Sandboe, Graziella Devoli, and Karianne S. Lilleøren
X3.144 |
Jedsada Phengsuwan, Nipun Balan TH, and Rajiv Ranjan
X3.145 |
Jui-Ting Lee, Chang-Cheng Hsieh, Huai-Houh Hsu, and Tien-Wei Chan