RT Journal Article
T1 Mapping Vulnerable Urban Areas Affected by Slow-Moving Landslides Using Sentinel-1 InSAR Data
A1 Béjar-Pizarro, Marta
A1 Notti, Davide
A1 Mateos, Rosa M.
A1 Ezquerro, Pablo
A1 Centolanza, Giuseppe
A1 Herrera, Gerardo
A1 Bru, Guadalupe
A1 Sanabria, Margarita
A1 Solari, Lorenzo
A1 Duro, Javier
A1 Fernández Torres, José
AB 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.
PB MDPI
SN 2072-4292
YR 2017
FD 2017-08-23
LK https://hdl.handle.net/20.500.14352/19191
UL https://hdl.handle.net/20.500.14352/19191
LA eng
NO Ministerio de Economía y Competitividad (MINECO)/FEDER
DS Docta Complutense
RD 8 abr 2025