Do Information and Citizens Characteristics Affect Public Acceptability of Landslide Protection Measures? A Latent Class Approach

Franceschinis, Cristiano; Thiene, Mara; Mattea, Stefania; Scarpa, Riccardo

doi:10.1007/978-3-030-36875-3_25

Cited by 6 publications

(3 citation statements)

References 22 publications

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“…The hazard due to the destructive power of debris flows and their increased frequency calls for structural countermeasures for the protection of sites of medium to high value. Furthermore, the presence of such protective works can enhance the sense of safety among the population and promote the development of tourist and economic activities, considering the increased perception of the risk (Franceschinis et al., 2020; Musumeci et al., 2021; Strouth & McDougall, 2021; Thiene et al., 2017).…”

Section: Introductionmentioning

confidence: 99%

Deposition areas: An effective solution for the reduction of the sediment volume transported by stony debris flows on the high‐sloping reach of channels incising fans and debris cones

Bernard,

Barbini,

Boreggio

et al. 2023

Earth Surf Processes Landf

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SummaryThe main approach to managing the volume of sediment transported by stony debris flows routing along channels is through retention basins and open check dams, usually built in the lower reach just upstream of inhabited areas where slopes are gentler. In some cases, these measures are not sufficient to retain all the volume of sediment transported by debris flows. Works for trapping the sediments should also be placed in the upper reach of debris‐flow channels. In this area, where the channel bed is characterized by very high slopes and vertical variability over time, constructing and maintaining transversal embankments for sediment retention is difficult. In addition, they could also be susceptible to failure, potentially increasing the magnitude of the phenomenon instead of mitigating it. On the other hand, other types of works, such as solid‐body check dams or net barriers, have a decreasing efficiency over time in reducing the volume of sediment transported by debris flows. An alternative solution could be a retention basin open on the downstream side, that is, without the ending transversal embankment or berm. Therefore, it can be designated as a deposition area because the retention effect of the downstream embankment is missing, and sediment deposition only occurs due to the flatness of the basin. For sizing purposes, here, we derive two relationships between the deposition area and the volume of the deposit. These two relationships are derived from a physically based geometrical approach and empirical approach, respectively. After analyzing the morphology of the depositional processes that occurred in an existing deposition area during debris‐flow events, we test the validity of the two relationships. Overall, these can be used independently or in combination for designing a deposition area. At last, we introduce the necessary geomorphological conditions for the construction of the deposition area and guidance for its placement.

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Section: Introductionmentioning

confidence: 99%

Deposition areas: An effective solution for the reduction of the sediment volume transported by stony debris flows on the high‐sloping reach of channels incising fans and debris cones

Bernard,

Barbini,

Boreggio

et al. 2023

Earth Surf Processes Landf

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“…Many villages, tourist resorts, and linear infrastructures are built on DF fans or intersect DF channels. The expansion of human activities (new settlements, infrastructures, and touristic facilities, often in the extreme alpine environment) increases the vulnerability of society to these phenomena (Franceschinis et al., 2020). Moreover, the frequency of these phenomena is growing due to climate change (Stoffel et al., 2014); it leads to the increasing of both extreme rainfalls (Floris et al., 2010) and rock wall collapses that provide sediments even in locations where they never occurred before (Gatter et al., 2018; Bernard, Berti, et al., 2019).…”

Section: Introductionmentioning

confidence: 99%

The Use of Rain Gauge Measurements and Radar Data for the Model‐Based Prediction of Runoff‐Generated Debris‐Flow Occurrence in Early Warning Systems

Bernard

Gregoretti

2021

Water Resources Research

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Debris flows (DFs) are classified as mixtures of sediments and water that rapidly route along steep channels. In mountainous regions, the impulsive nature of DFs combined with their high devastating power threatens human life and facilities (Jakob & Hungr, 2005) and has a high socioeconomic impact (Thiene et al., 2017). In this work, we refer to runoff-generated DFs, that is, those formed after the entrainment of debris material into abundant runoff descending from rocky cliffs (Coe et al., 2008; Hürlimann et al., 2014; Kean et al., 2013). Doubtless, high-intensity and sub-hourly rainfalls (15-45 minutes) are the predominant factors for the triggering and magnitude of runoff generated DFs. The prediction of such phenomena has great relevance for limiting damages and victims in the threatened areas and increasingly enters the context of social challenges. Many villages, tourist resorts, and linear infrastructures are built on DF fans or intersect DF channels. The expansion of human activities (new settlements, infrastructures, and touristic facilities, often in the extreme alpine environment) increases the vulnerability of society to these phenomena (Franceschinis et al., 2020). Moreover, the frequency of these phenomena is growing due to climate change (Stoffel et al., 2014); it leads to the increasing of both extreme rainfalls (Floris et al., 2010) and rock wall collapses that provide sediments even in locations where they never occurred before (Gatter et al., 2018; Bernard, Berti, et al., 2019). The large number of sites, which are potentially threatened, and the inherent inflexibility of technical countermeasures characterized by high costs make early warning systems the most cost-effective measure to mitigate the risk associated with DFs (Sättele et al., 2015). Because of the short times of DF downstream routing, the prediction of occurrences should occur as soon as possible. The real-time evaluation of triggering rainfalls permits to launch alerts in a time shorter than that given during DF downstream routing by sensors positioned along DF flow paths. The most common way to predict DF occurrences is the use of rainfall-based thresholds in early warning systems (

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“…Their results show that visual information contribute to higher willingness-to-pay for the measure for which information was provided and they thus conclude that education may increase peoples' willingness to pay for measures to reduce landslide risk (Mattea et al 2016). Franceschinis et al (2020) use the same data as Mattea et al (2016) but apply a Latent Class model to analyze preference heterogeneity across groups. They find women with higher education and income more likely to belong to the class with a higher willingness to pay for all devices.…”

Section: Introductionmentioning

confidence: 99%

Valuing the Impacts of Landslides: A Choice Experiment Approach

Spegel

2021

EconDisCliCha

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This paper analyzes the preferences for reducing the negative impacts of landslides. Negative consequences of landslides include impacts on transport infrastructure, humans, the environment and important societal services. We apply a choice experiment. The analysis is based on 6048 observations from 504 participants in a web panel. The overall finding is that reducing the risk of landslides would have a positive impact on individuals’ utility, and that individuals prioritize preventing negative consequences on human health and safety over maintaining societal services, environmental status, and preventing damages to transport infrastructure, which seems to be least pressing. Results indicate that prioritizations of citizens differ from the prioritizations of public authorities, whose risk assessment model for evaluating the consequences of landslides gives equal weight to the different impacts.

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Do Information and Citizens Characteristics Affect Public Acceptability of Landslide Protection Measures? A Latent Class Approach

Cited by 6 publications

References 22 publications

Deposition areas: An effective solution for the reduction of the sediment volume transported by stony debris flows on the high‐sloping reach of channels incising fans and debris cones

Deposition areas: An effective solution for the reduction of the sediment volume transported by stony debris flows on the high‐sloping reach of channels incising fans and debris cones

The Use of Rain Gauge Measurements and Radar Data for the Model‐Based Prediction of Runoff‐Generated Debris‐Flow Occurrence in Early Warning Systems

Valuing the Impacts of Landslides: A Choice Experiment Approach

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