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| Indexado |
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| DOI | 10.11144/JAVERIANA.SC25-2.EORL | ||
| Año | 2020 | ||
| Tipo |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
In a large part of South America, slow landslides are triggered by extreme hydrometeorological conditions leading to, for instance, Rainfall-Induced Landslides-RILs. These RILs are common in urban areas and have a negative impact on the population and infrastructure development. Despite their importance, these events are little understood. We aimed at understanding the spatial distribution of RILs in the urban zone of Temuco, Chile (3S.8°S, 72.6°W). The area has the typical hydrometeorological conditions of southern Chile. We conducted our assessment with a temporal analysis of shallow deformations, obtained by synthetic aperture radar interfere met ry (Sentinel I A/B). These shallow deformation rates were compared with satellite precipitation data (CHIRPS product) and electrical resistivity tomography (ERT). We identified active RIL-prone zones with deformation rates greater than 60 mm during the period 2014 to 2017, supporting theories of hydrometeorological control. Slow movements were observed in volcanic soils, suggesting the influence of their geotechnical characteristics. Our results can be extrapolated to the southern Andes (35°S-43°S), where a large number of volcanic-sedimentary units are susceptible to RILs. Finally, integration of our multidisciplinary approach will facilitate understanding of the local RtL dynamics, allowing a better risk management to decision-makers in South American and other developing countries.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | FUSTOS-TORIBIO, IVO JANOS | Hombre |
Universidad de La Frontera - Chile
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| 2 | Moreno-Yaeger, P. | Hombre |
University of Wisconsin-Madison - Estados Unidos
Universidad Católica de Temuco - Chile |
| 3 | Vasquez, Daniel | Hombre |
Universidad Católica de Temuco - Chile
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| 4 | Morales, Bastian | Hombre |
Universidad Católica de Temuco - Chile
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| 5 | Silva, Antonieta | Mujer |
Universidad de La Frontera - Chile
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| 6 | Ramirez, Elisa | Mujer |
Universidad Católica de Temuco - Chile
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| Fuente |
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| Fondo Nacional de Desarrollo Científico, Tecnológico y de Innovación Tecnológica |
| Fondo Nacional de Desarrollo CientÃfico, Tecnológico y de Innovación Tecnológica |
| Agradecimiento |
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| We thank the three anonymous reviewers whose comments helped improve our manuscript. Deformation maps from InSAR data were developed by the DFP17-0014 and PII180008 projects projects. Field ERT survey were funded by DI18-0060 and FONDECYT 11180500 projects. Pablo Moreno-Yaeger holds an ANID international grant 72200330. We appreciate the support of C. Torres, C. Salazar, C. Chiguailaf, and J. Oyarzun during field campaigns. |