Abstract
Active landslide risk assessment and management are primarily based on the availability of dedicated studies and monitoring activities. The establishment of decision support for the efficient management of active landslides threatening urban areas is a worthwhile contribution. Nowadays, consistent information about major landslide hazards is obtained through an interdisciplinary approach, consisting of field survey data and long-time monitoring, with the creation of a high populated dataset. Nevertheless, the large number and variety of acquired data can generate some criticalities in their management. Data fragmentation and a missing standard format of the data should represent a serious hitch in landslide hazard management. A good organization in a standard format can be a good operative solution. Based on standardized approaches such as the ICAO (International Civil Aviation Organization), we developed a standard document called operative monography. This document summarizes all available information by organizing monitoring data and identifying possible lacks. We tested this approach in the Aosta Valley Region (NW Italy) on five different slow moving landslides monitored for twenty years. The critical analysis of the available dataset modifies a simple sequence of information in a more complex document, adoptable by local and national authorities for a more effective management of active landslides.
Highlights
Landslides are one of the most common natural disaster throughout the world [1,2]
To collect and organize all available information, we developed a document named Operative Monography (OM) that provides an overview of the available data about a certain unstable slope
We summarized the collected information in three main topics: (i) Geological-geomorphological setting, structural analysis, and hydrological-hydrogeological aspects, (ii) risk scenarios and landslide spatial prediction models, and (iii) monitoring network system
Summary
The definition of the impact of landslides is usually performed through dedicated risk management procedures [6,7,8,9]. These operations are multi-component decision-making processes aimed at reducing the impact of landslides on territories and infrastructure, and creating mitigation strategies. This entails a compound framework of various actions such as (i) land use planning,. Landslide risk management requires participation at various levels by national, regional, and municipal authorities, often with the support to decision makers of the scientific community. In the case of large active phenomena involving urban areas, infrastructure, and population, the National Civil Protection intervention is required
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