Rapid characterisation of the extremely large landslide threatening the Rules Reservoir (Southern Spain)
When an active landslide is first identified in an artificial reservoir, a comprehensive study has to be quickly conducted to analyse the possible hazard that it may represent to such a critical infrastructure. This paper presents the case of the El Arrecife Landslide, located in a slope of the Rule...
| Authors: | , , , , , , , , |
|---|---|
| Format: | article |
| Status: | Published version |
| Publication Date: | 2021 |
| Country: | España |
| Institution: | Centre Tecnològic de Telecomunicacions de Catalunya (CTTC) |
| Repository: | r-CTTC. Repositorio Institucional Producción Científica del Centre Tecnològic de Telecomunicacions de Catalunya (CTTC) |
| OAI Identifier: | oai:cttc.fundanetsuite.com:p4116 |
| Online Access: | https://cttc.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=4116 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116014605&doi=10.1007%2fs10346-021-01728-z&partnerID=40&md5=6c64351ada7a62e504dea9f1ff471aed |
| Access Level: | Open access |
| Keyword: | Spain Data integration Geology Geophysical prospecting Ground penetrating radar systems Hazards Landslides Remote sensing Slags Synthetic aperture radar Active landslides Artificial reservoirs Geological data Hazard Assessment InSAR Motion data Multi-technique monitoring Quick characterization Southern Spain Structure from motion field survey hazard assessment kinematics landslide radar interferometry remote sensing subsidence synthetic aperture radar Geological surveys |
| Summary: | When an active landslide is first identified in an artificial reservoir, a comprehensive study has to be quickly conducted to analyse the possible hazard that it may represent to such a critical infrastructure. This paper presents the case of the El Arrecife Landslide, located in a slope of the Rules Reservoir (Southern Spain), as an example of geological and motion data integration for elaborating a preliminary hazard assessment. For this purpose, a field survey was carried out to define the kinematics of the landslide: translational in favour of a specific foliation set, and rotational at the foot of the landslide. A possible failure surface has been proposed, as well as an estimation of the volume of the landslide: 14.7 million m3. At the same time, remote sensing and geophysical techniques were applied to obtain historical displacement rates. A mean subsidence rate of the landslide around 2 cm/year was obtained by means of synthetic aperture radar interferometry (InSAR) and ground-penetrating radar (GPR) data, during the last 5 and 22 years, respectively. The structure-from-motion (SfM) technique provided a rate up to 26 cm/year during the last 14 years of a slag heap located within the foot of the landslide, due to compaction of the anthropical deposits. All of this collected information will be valuable to optimise the planning of future monitoring surveys (i.e. differential global positioning systems, inclinometers, ground drilling, and InSAR) that should be applied in order to prevent further damage on the reservoir and related infrastructures. © 2021, Springer-Verlag GmbH Germany, part of Springer Nature. |
|---|