Title: Ground-Based SAR Interferometry for Updating DTMs in Landslide Areas and Evaluating Morphological Changes
Authors: ANTONELLO GIUSEPPEFORTUNY GUASCH JOAQUIMLEVA DavideNICO GiovanniTARCHI DARIO
Citation: Geophysical Research Abstracts vol. 6 p. 06827
Publisher: European Geosciences Union
Publication Year: 2004
JRC Publication N°: JRC45218
ISSN: 1607-7962
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC45218
Type: Contributions to Conferences
Abstract: In an environment where the local topography can change by tens of meters in elevation due to phenomena such as a large landslide, up-to-date accurate topographic mapping is invaluable for many diverse applications. These include the identification of down-slope areas, the measurement of terrain volume, and the modelling of landslides. Recently, the Linear Synthetic Aperture (LiSA) system, a Ground-Based Synthetic Aperture Radar (GB-SAR) developed at the Joint Research Centre of the European Commission has been successfully employed to monitor landslides having different properties. In these cases a zero-baseline interferometric configuration has been used to measure terrain displacements in areas having a spatial extension of a few squared kilometres and located in mountainous regions. This work concerns the application of the LiSA interferometer using a stereoscopic interferometric configuration to map the local topography. The performances of the stereoscopic LiSA interferometer are presented and its application to the study of changes in terrain morphology of a landslide area described. The stereoscopic configuration is used to identify the area interested by morphological changes. The comparison with data acquired with a zero-baseline interferometric configuration allows to confirm that the area identified by means of the stereoscopic configuration is actually moving. This approach could be useful to monitor a landslide on a short and a long time scale.
JRC Institute:Institute for the Protection and Security of the Citizen

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