Multifractal Analysis of Spatial and Temporal Distributions of Landslides in Colombia

Muñoz, Estefanía; Poveda, Germán; Ochoa, Andrés; Caballero, Humberto

doi:10.1007/978-3-319-53498-5_122

Cited by 2 publications

(3 citation statements)

References 22 publications

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“…Younes-Cárdenas and Erazo-Mera ( 2016) developed an explanatory model to predict the degree of susceptibility of landslides along the E-20 highway in Ecuador, and concluded that the distribution of landslides was far from random, and clearly associated with several geological and environmental factors, including zones of active erosion processes, volcanic sandstones, granitic rocks and mean annual rainfall values between 1500 and 1750 mm. The non-random nature of landslides in space and time has been confirmed by Muñoz et al (2017) who showed the multifractal space-time characteristics of landslides in the Andes of Colombia.…”

Section: Northern Tropical Andesmentioning

confidence: 82%

High Impact Weather Events in the Andes

et al. 2020

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Owing to the extraordinary latitudinal extent, a strong orographic variability with very high mountain tops, and the presence of deep valleys and steep slopes, the Andes and the population of the region are highly prone and vulnerable to the impacts of a large suite of extreme weather events. Here we provide a review of the most salient events in terms of losses of human and animal lives, economic and monetary losses in costs and damages, and social disruption, namely: (1) extreme precipitation events and related processes (Mesoscale Convective Systems, lightning), (2) cold spells, frosts, and high winds, (3) the impacts of ENSO on extreme hydro-meteorological events, (4) floods, (5) landslides, mudslides, avalanches, and (6) droughts, heat waves and fires. For our purposes, we focus this review on three distinctive regions along the Andes: Northern tropical (north of 8 • S), Southern tropical (8 • S-27 • S) and Extratropical Andes (south of 27 • S). Research gaps are also identified and discussed at the end of this review. It is very likely that climate change will increase the vulnerability of the millions of inhabitants of the Andes, impacting their livelihoods and the sustainable development of the region into the twenty first century amidst urbanization, deforestation, air, soil and water pollution, and land use changes.

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Section: Northern Tropical Andesmentioning

confidence: 82%

High Impact Weather Events in the Andes

et al. 2020

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“…Finally, Pradhan et al [51] and Ramos-Cañon et al [59] catalogued rock falls, avalanches, rotational and translational landslides, earth-mud flows and debris flows. In other parts of the country, such as the Western and Central Cordilleras, shallow slides, falls, debris flows and mud-flows have been identified [5,[24][25][26][27]29,45,50,55]; in the southern Colombian Massif, specifically in Mocoa, debris flows, debris avalanches and shallow slides have been found [8,21,30,31].…”

Section: Lanslides Inventorymentioning

confidence: 99%

“…In Colombia, the occurrence of natural hazard phenomena, including landslides, earthquakes, and volcanic eruptions, is very frequent due to its geographical location in the Andean mountain range, with a steep orography, a great geological complexity and a significant climatic variability [5][6][7][8]. In fact, according to [9], it is one of the most prominent countries in global databases such as the Disaster database (EM-DAT [10]), the Disaster Inventory System (DesInventar [11]), the Global Landslide Catalog (GLC [12]) and the Global Fatal Landslide database (GFLD [13]).…”

Section: Introductionmentioning

confidence: 99%

Landslide Susceptibility Analysis on the Vicinity of Bogotá-Villavicencio Road (Eastern Cordillera of the Colombian Andes)

Herrera-Coy,

Calderón,

Herrera-Pérez

et al. 2023

Remote Sensing

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Landslide occurrence in Colombia is very frequent due to its geographical location in the Andean mountain range, with a very pronounced orography, a significant geological complexity and an outstanding climatic variability. More specifically, the study area around the Bogotá-Villavicencio road in the central sector of the Eastern Cordillera is one of the regions with the highest concentration of phenomena, which makes its study a priority. An inventory and detailed analysis of 2506 landslides has been carried out, in which five basic typologies have been differentiated: avalanches, debris flows, slides, earth flows and creeping areas. Debris avalanches and debris flows occur mainly in metamorphic materials (phyllites, schists and quartz-sandstones), areas with sparse vegetation, steep slopes and lower sections of hillslopes; meanwhile, slides, earth flows and creep occur in Cretaceous lutites, crop/grass lands, medium and low slopes and lower-middle sections of the hillslopes. Based on this analysis, landslide susceptibility models have been made for the different typologies and with different methods (matrix, discriminant analysis, random forest and neural networks) and input factors. The results are generally quite good, with average AUC-ROC values above 0.7–0.8, and the machine learning methods are the most appropriate, especially random forest, with a selected number of factors (between 6 and 8). The degree of fit (DF) usually shows relative errors lower than 5% and success higher than 90%. Finally, an integrated landslide susceptibility map (LSM) has been made for shallower and deeper types of movements. All the LSM show a clear zonation as a consequence of the geological control of the susceptibility.

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Multifractal Analysis of Spatial and Temporal Distributions of Landslides in Colombia

Cited by 2 publications

References 22 publications

High Impact Weather Events in the Andes

High Impact Weather Events in the Andes

Landslide Susceptibility Analysis on the Vicinity of Bogotá-Villavicencio Road (Eastern Cordillera of the Colombian Andes)

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