Articles | Volume 10, issue 9
Nat. Hazards Earth Syst. Sci., 10, 1865–1875, 2010
Nat. Hazards Earth Syst. Sci., 10, 1865–1875, 2010

Research article 07 Sep 2010

Research article | 07 Sep 2010

Assessment of the performance of X-band satellite radar data for landslide mapping and monitoring: Upper Tena Valley case study

D. Notti1, J. C. Davalillo2, G. Herrera2, and O. Mora3 D. Notti et al.
  • 1Department of Earth Sciences, University of Pavia, Via Ferrata, 1, 27100 Pavia, Italy
  • 2Área de Peligrosidad y Riesgos Geológicos, Departamento de Investigación y Prospectiva Geocientífica, Instituto Geológico y Minero de España (IGME), c/ Alenza 1, 28003 Madrid, Spain
  • 3Altamira Information, c/ Còrsega, 381-387, 2n 3a, 08037 Barcelona, Spain

Abstract. The aim of this work is to analyse the advantages and disadvantages of using the new X-band SAR data acquired by TerraSAR-X sensors for landslides mapping. This dataset has been processed using a Persistent Scatterer Interferometry technique over the Upper Tena Valley (Central Pyrenees, Spain). In the first section, the geological and geomorphological setting of the study area is introduced, focusing on the description of the landslide inventory. Then the Stable Point Network technique is briefly described, followed by the assessment of the performance of the X-band SAR dataset. In this context, we present first a model to predict the distribution of Persistent Scatterers based on the slope geometry and the land use information, which has then been validated with X-band data results. On a second stage, we have assessed the performance of X-band dataset to detect and monitor mapped landslides. Finally some illustrative case studies are shown demonstrating the potential of using X-band SAR data not only for landslide mapping but also to detect and monitor deformations affecting human infrastructures.