Landslide damming hazard susceptibility maps: a new GIS-based procedure for risk management

Stefanelli, Carlo Tacconi; Catani, Filippo

doi:10.1007/s10346-020-01395-6

Cited by 22 publications

(5 citation statements)

References 41 publications

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“…The Arno River basin is mainly composed of flysch and rocks with a prevailing pelitic fraction along the reliefs and cohesive and granular soils in the hilly basins; obviously, this geological composition affects the type and occurrence of surface processes, primarily through differences in the mechanical properties of the prevalent lithology (Stefanelli et al, 2020).…”

Section: Study Area and Qra Assessmentmentioning

confidence: 99%

How can landslide risk maps be validated? Potential solutions with open-source databases

et al. 2022

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Landslides are a worldwide natural hazard that cause more damage and casualties than other hazards. Therefore, social and economic losses can be reduced through a landslide quantitative risk assessment (QRA). In the last two decades, many attempts of quantitative analysis on various scales have been performed; nevertheless, the major difficulty of QRA lies in how precise and reliable the assessment should have to be useful. For this reason, in this paper, we analyzed different freely available datasets and some products of previous research to assess the soundness of the outcomes performed by a recent QRA of slow-moving landslides in the Arno River basin (Central Italy). The validation process was carried out by comparing the abovementioned datasets and two components of the selected QRA (hazard and risk). The obtained results showed a robust correlation between most of the testing dataset and risk components, highlighting the accuracy of the selected QRA.

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Section: Study Area and Qra Assessmentmentioning

confidence: 99%

How can landslide risk maps be validated? Potential solutions with open-source databases

et al. 2022

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“…Risk assessment of a single mountain-hazard type has been relatively mature after years of development. Based on empirical methods and numerical simulation methods (Tacconi Stefanelli et al, 2020;Choi et al, 2021), a relatively mature mountain-hazard risk assessment system has been established. However, in the context of global warming, a single mountain-hazard type is often transformed to form a hazard chain with strong destructive power (Fan et al, 2020), which also brings many challenges to the risk assessment of the hazard chain.…”

Section: Risk Assessment and Key Prevention And Control Technologiesmentioning

confidence: 99%

Review of Investigations on Hazard Chains Triggered by River-Blocking Debris Flows and Dam-Break Floods

Chen

Ruan²,

Chen³

et al. 2022

Front. Earth Sci.

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The Tibetan Plateau suffers from various types of geohazards (collapses, landslides, and debris flows.) due to abrupt changes in complex topography and weather conditions. Global warming and frequent high-intensity earthquakes in recent years have exacerbated the situation. Collapses and landslides provide vast amount of soil and debris which are conveyed downstream by runoff caused by extreme rainfalls to form large-scale debris flows; then, the debris flows block rivers and finally form dam-break floods, that is, a hazard chain triggered by debris flows. Along the evolution direction of the hazard chain, the affected areas are constantly amplified. This study first summarizes the related research studies on river blockage, debris-flow dam failure, and the hazard chain triggered by debris flows and then points out the drawbacks of existing research studies. Overall, the research (including mechanism, risk assessment, key prevention, and control technologies) on the hazard chain triggered by debris flows is still in its infancy and is disconnected among single hazard types in the hazard chain; meanwhile, the understanding of the mechanism of debris flow blocking the river is not enough; the established model and discriminant have minimal application scope, and there is no empirical model and dynamic model of debris-flow dam failure. Finally, several key scientific issues of this field were raised: 1) it is necessary to elaborate the coupling mechanism of debris-flow dam formation and construct the discriminant and numerical model of debris flow blocking the river with high precision and a wide application range. 2) It is necessary to further study the failure mechanism of a debris-flow dam, construct the numerical model of the failure process of a debris-flow dam, and accurately simulate the outburst flood hydrograph. 3) It is necessary to clarify the critical transformation conditions and dynamic evolution process of the hazard chain caused by debris flows, complete the accurate quantitative simulation of the whole disaster chain process, then establish a complete risk assessment system of the hazard chain, and finally develop some key prevention and control technologies suitable for the hazard chain.

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“…Strong seismic shaking in a steep mountain belt induces hundreds to thousands of landslides, thereby eroding the topography instantaneously 1 . Quantifying the volume of earthquake-induced landslides (EQIL) is critical to understand the topographic evolution and mountain building processes 2 , mass wasting and sediment budget 3 , 4 , reservoir siltation 5 , to ascertain chains of geohazard risk in downstream patches including debris flows and floods 6 , 7 , vegetation dynamics and carbon sink 8 – 10 , and other atmospheric and surface processes 11 . However, only a limited number of studies succeeded in accurately quantifying EQIL volumes immediately following a seismic event 12 .…”

Section: Introductionmentioning

confidence: 99%

Earthquake-induced soil landslides: volume estimates and uncertainties with the existing scaling exponents

Yunus

Chen

Catani

et al. 2023

Sci Rep

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Quantifying landslide volumes in earthquake affected areas is critical to understand the orogenic processes and their surface effects at different spatio-temporal scales. Here, we build an accurate scaling relationship to estimate the volume of shallow soil landslides based on 1 m pre- and post-event LiDAR elevation models. On compiling an inventory of 1719 landslides for 2018 Mw 6.6 Hokkaido-Iburi earthquake epicentral region, we find that the volume of soil landslides can be estimated by γ = 1.15. The total volume of eroded debris from Hokkaido-Iburi catchments based on this new scaling relationship is estimated as 64–72 million m3. Based on the GNSS data approximation, we noticed that the co-seismic uplift volume is smaller than the eroded volume, suggesting that frequent large earthquakes (and rainfall extremes) may be counterbalancing the topographic uplift through erosion by landslides, especially in humid landscapes such as Japan, where soil properties are rather weak.

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Landslide damming hazard susceptibility maps: a new GIS-based procedure for risk management

Cited by 22 publications

References 41 publications

How can landslide risk maps be validated? Potential solutions with open-source databases

How can landslide risk maps be validated? Potential solutions with open-source databases

Review of Investigations on Hazard Chains Triggered by River-Blocking Debris Flows and Dam-Break Floods

Earthquake-induced soil landslides: volume estimates and uncertainties with the existing scaling exponents

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