Rock slope failure in the Western Alps: A first comprehensive inventory and spatial analysis

Blondeau, Sylvain; Gunnell, Yanni; Jarman, David

doi:10.1016/j.geomorph.2021.107622

Cited by 30 publications

(11 citation statements)

References 92 publications

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“…Although landslide coverage within the LGM limits of PIS (1.9%) is similar to other mountain ranges that have undergone deglaciation over a similar time interval, such as the Southern Alps in New Zealand (2%) 13 , the Pyrenees (1.8%) 50 , the Carpathians (1.1%) 16 , and slightly less than the European Alps (5.6%) 17 , this relatively high value is due to a small number of landslide hotspots located outside of the Patagonian Andes along the eastern edge of the PIS. Most of the mountains in the PIS area have a small fraction of landslides (< < 1%), resembling tectonically less mobile Paleozoic orogenic belts (e.g., British Mountains with 0.8% landslide coverage 18 ).…”

Section: Discussionmentioning

confidence: 63%

“…Our study provides the first extensive ice-sheet scale inventory of large landslides; previous research has presented only parts of deglaciated mountain ranges 16 or focused just on particular landslide types 17 . As landslide morphology cannot survive repeated glaciations, our landslide population within the PIS developed over the last ~ 35 ka 22 .…”

Section: Discussionmentioning

confidence: 99%

“…Numerous studies exist on the spatial distribution of paraglacial landslides 11 – 16 , however very few have evaluated the distribution and controls on landslides at the scale of entire mountain belts or ice sheets 17 , 18 . Consequently, the complex reasons for slope instability in these deglaciated areas remain somewhat unclear.…”

Section: Introductionmentioning

confidence: 99%

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Large landslides cluster at the margin of a deglaciated mountain belt

Pánek

Břežný

Harrison

et al. 2022

Sci Rep

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Landslides in deglaciated and deglaciating mountains represent a major hazard, but their distribution at the spatial scale of entire mountain belts has rarely been studied. Traditional models of landslide distribution assume that landslides are concentrated in the steepest, wettest, and most tectonically active parts of the orogens, where glaciers reached their greatest thickness. However, based on mapping large landslides (> 0.9 km2) over an unprecedentedly large area of Southern Patagonia (~ 305,000 km2), we show that the distribution of landslides can have the opposite trend. We show that the largest landslides within the limits of the former Patagonian Ice Sheet (PIS) cluster along its eastern margins occupying lower, tectonically less active, and arid part of the Patagonian Andes. In contrast to the heavily glaciated, highest elevations of the mountain range, the peripheral regions have been glaciated only episodically, leaving a larger volume of unstable sedimentary and volcanic rocks that are subject to ongoing slope instability.

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Section: Discussionmentioning

confidence: 63%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Large landslides cluster at the margin of a deglaciated mountain belt

Pánek

Břežný

Harrison

et al. 2022

Sci Rep

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“…This map showed numerous local instabilities affecting valley flanks, as for example in Aosta Valley, almost systematically compatible with downward along-slope displacements. These motions compared well with the geographical extent of the numerous field-based mapped Deep-seated Gravitational Slope Deformations (DSGSD) (Agliardi et al, 2001;Blondeau et al, 2021;Drouillas et al, 2020;Hippolyte et al, 2006), and with InSAR measurements of DSGSD in the southern part of our study area (Aslan et al, 2020). Here, we used the DSGSD inventory made by Andre (2020) extracted as follows: (a) high-pass filtered interferograms were inverted into time series to obtain a high-pass filtered velocity map; (b) a threshold was applied on velocity; (c) additional constraints were applied on size, slope amplitude and orientation with respect to radar viewing angle, and radar visibility.…”

Section: Ground Velocity Estimates From Time-series Inversionmentioning

confidence: 85%

Spatial Heterogeneity of Uplift Pattern in the Western European Alps Revealed by InSAR Time‐Series Analysis

Mathey

Doin

André

et al. 2022

Geophysical Research Letters

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The European Alpine belt results from the complex continental collision phases between Africa and Eurasia (Coward & Dietrich, 1989;Schmid & Kissling, 2000). While convergence is still active and is attested by Adria indentation in the Eastern and Central Alps, it stopped in the Western Alps, where the present-day kinematics are characterized by the anticlockwise rotation of Adria microplate with respect to Eurasia (e.g., Calais et al., 2002). Global Navigation Satellite System (GNSS) measurements highlight extensive and transcurrent horizontal strain rates in the western part of the belt, without any measured shortening across it (Calais et al., 2002;Serpelloni et al., 2016Serpelloni et al., , 2018. The dynamic processes that have been suggested to affect the Western Alps involve intrinsic surficial (isostatic adjustments to deglaciation and erosion) and deep sources (slab pull or break-off and mantle upwelling), as well as far-field microplate kinematics, but their respective contributions to present-day crustal deformation are an ongoing debate (e.g., Sternai et al., 2019).GNSS and leveling measurements in the Western Alps indicate that vertical velocities of a few mm/yr are expected, which is an order of magnitude higher than the horizontal motions (

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“…Durante el proceso de excavación superficial del talud, se presenta una serie de problemas de inestabilidad del terreno (Gao et al, 2021), debido al comportamiento de esfuerzos provocados por la alteración de la energía estática varía las propiedades físico-mecánicas de sólido rocoso originario (Bastola, Cai, & Damjanac, 2019), los deslizamientos que ocurren en macizos rocosos son fenómenos sujetos a muchos grados de inseguridad debido a los diferentes tipos de rotura de falla (Y. Zheng, Chen, Liu, Song, & Meng, 2019) que puede llegar a mostrar según la litología de la zona (Blondeau, Gunnell, & Jarman, 2021), la inestabilidad de un talud generalmente son debido a las características geomecánicas del macizo rocoso sobre todo al contenido de agua, la orientación y distribución de sus discontinuidades (Fernandez-Gutierrez, Rodriguez, Gonzalo-Orden, & Perez-Acebo, 2021), existe diferentes métodos para el análisis de estabilidad por ejemplo utilizando campos de tensión de elementos finitos elásticos (S. Liu, Su, Li, & Shao, 2020), también mediante el análisis probabilístico permite hacer la evaluación aleatoria de los parámetros geomecánicos (Fernández, Villalobos, & King, 2018).…”

Section: Introductionunclassified

Tendencias en Las Empresas Para La Gestión Del Conocimiento Con Inteligencia De Negocios

2022

Libro Compilación Resultados De Investigación

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La Inteligencia de Negocios (IN), así como la Gestión de Conocimiento (GC) se hace relevante en las empresas para la toma de decisiones futura, disminuyendo los tiempos de respuesta e incrementando la eficacia y eficiencia. En este artículo se analiza la extracción de los datos, hasta el último proceso relacionando con la gestión de conocimiento. El propósito de la investigación fue determinar la influencia correlacional de la IN en la GC del área de informática en una empresa dedicada a la fabricación y venta de muebles; estudio de enfoque cuantitativo, descriptivo- correlacional, transversal; siendo de diseño no experimental, método hipotético deductivo. Con muestra conformada por 120 trabajadores de un total de 175, muestreo aleatorio simple, empleando la encuesta como técnica y como instrumentos dos cuestionarios tipo Likert para las variables IN y GC previamente validados demostrando la eficacia y confiabilidad mediante la técnica de opinión de expertos y alfa de Cronbach cuyo resultado fue 0.838 de confiabilidad siendo aceptable. Los resultados obtenidos evidenciaron, que la IN y GC tiene correlación positiva moderada en la del área de informática de la empresa en estudio, con un nivel de significancia es 0,000 < 0,05, de acuerdo a la encuesta se determinó el nivel de relación entre las 2 variables de: 5 % (6 personas) bajo, 48,3% (58 personas) regular, 5% (6personas), buena, y 9.2% (11 personas) excelente.

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Rock slope failure in the Western Alps: A first comprehensive inventory and spatial analysis

Cited by 30 publications

References 92 publications

Large landslides cluster at the margin of a deglaciated mountain belt

Large landslides cluster at the margin of a deglaciated mountain belt

Spatial Heterogeneity of Uplift Pattern in the Western European Alps Revealed by InSAR Time‐Series Analysis

Tendencias en Las Empresas Para La Gestión Del Conocimiento Con Inteligencia De Negocios

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