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Technical Note

Mapping Vulnerable Urban Areas Affected by Slow-Moving Landslides Using Sentinel-1 InSAR Data

Geohazards InSAR Laboratory and Modeling Group (InSARlab), Geoscience Research Department, Geological Survey of Spain (IGME), Alenza 1, 28003 Madrid, Spain
National Research Council of Italy, Research Institute for Geo-Hydrological Protection (CNR-IRPI), Strada delle Cacce 73, 10135 Torino, Italy
Geological Survey of Spain (IGME), Urb. Alcázar del Genil, 4-Edif. Bajo, 18006 Granada, Spain
DARES TECHNOLOGY, Esteve Terradas, 1, Edif. RDIT, Parc UPC-PMT, 08860 Castelldefels, Barcelona, Spain
EuroGeoSurveys: Earth Observation and Geohazards Expert Group (EOEG), 36-38, Rue Joseph II, 1000 Brussels, Belgium
Institute of Geosciences (CSIC, UCM), Facultad C. Matemáticas, 28040 Madrid, Spain
Earth Sciences Department, University of Firenze, Via La Pira 4, 50121 Florence, Italy
Author to whom correspondence should be addressed.
Remote Sens. 2017, 9(9), 876;
Received: 23 July 2017 / Revised: 8 August 2017 / Accepted: 18 August 2017 / Published: 23 August 2017
Landslides are widespread natural hazards that generate considerable damage and economic losses worldwide. Detecting terrain movements caused by these phenomena and characterizing affected urban areas is critical to reduce their impact. Here we present a fast and simple methodology to create maps of vulnerable buildings affected by slow-moving landslides, based on two parameters: (1) the deformation rate associated to each building, measured from Sentinel-1 SAR data, and (2) the building damage generated by the landslide movement and recorded during a field campaign. We apply this method to Arcos de la Frontera, a monumental town in South Spain affected by a slow-moving landslide that has caused severe damage to buildings, forcing the evacuation of some of them. Our results show that maximum deformation rates of 4 cm/year in the line-of-sight (LOS) of the satellite, affects La Verbena, a newly-developed area, and displacements are mostly horizontal, as expected for a planar-landslide. Our building damage assessment reveals that most of the building blocks in La Verbena present moderate to severe damages. According to our vulnerability scale, 93% of the building blocks analysed present high vulnerability and, thus, should be the focus of more in-depth local studies to evaluate the serviceability of buildings, prior to adopting the necessary mitigation measures to reduce or cope with the negative consequences of this landslide. This methodology can be applied to slow-moving landslides worldwide thanks to the global availability of Sentinel-1 SAR data. View Full-Text
Keywords: landslides; InSAR; Sentinel-1; building damages landslides; InSAR; Sentinel-1; building damages
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MDPI and ACS Style

Béjar-Pizarro, M.; Notti, D.; Mateos, R.M.; Ezquerro, P.; Centolanza, G.; Herrera, G.; Bru, G.; Sanabria, M.; Solari, L.; Duro, J.; Fernández, J. Mapping Vulnerable Urban Areas Affected by Slow-Moving Landslides Using Sentinel-1 InSAR Data. Remote Sens. 2017, 9, 876.

AMA Style

Béjar-Pizarro M, Notti D, Mateos RM, Ezquerro P, Centolanza G, Herrera G, Bru G, Sanabria M, Solari L, Duro J, Fernández J. Mapping Vulnerable Urban Areas Affected by Slow-Moving Landslides Using Sentinel-1 InSAR Data. Remote Sensing. 2017; 9(9):876.

Chicago/Turabian Style

Béjar-Pizarro, Marta, Davide Notti, Rosa M. Mateos, Pablo Ezquerro, Giuseppe Centolanza, Gerardo Herrera, Guadalupe Bru, Margarita Sanabria, Lorenzo Solari, Javier Duro, and José Fernández. 2017. "Mapping Vulnerable Urban Areas Affected by Slow-Moving Landslides Using Sentinel-1 InSAR Data" Remote Sensing 9, no. 9: 876.

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