@prefix pubblicazioni: . @prefix unitaDiPersonaleInterno: . @prefix prodotto: . unitaDiPersonaleInterno:MATRICOLA23002 pubblicazioni:autoreCNRDi prodotto:ID41539 . @prefix rdf: . @prefix retescientifica: . prodotto:ID41539 rdf:type retescientifica:ProdottoDellaRicerca , prodotto:TIPO1101 . @prefix rdfs: . prodotto:ID41539 rdfs:label "Investigating landslides with space-borne Synthetic Aperture Radar (SAR) interferometry. (Articolo in rivista)"@en . @prefix xsd: . prodotto:ID41539 pubblicazioni:anno "2006-01-01T00:00:00+01:00"^^xsd:gYear ; pubblicazioni:doi "10.1016/j.enggeo.2006.09.013"^^xsd:string . @prefix skos: . prodotto:ID41539 skos:altLabel "
Colesanti C.; Wasowski J. (2006)
Investigating landslides with space-borne Synthetic Aperture Radar (SAR) interferometry.
in Engineering geology
"^^rdf:HTML ; pubblicazioni:autori "Colesanti C.; Wasowski J."^^xsd:string ; pubblicazioni:paginaInizio "173"^^xsd:string ; pubblicazioni:paginaFine "199"^^xsd:string ; pubblicazioni:numeroVolume "88"^^xsd:string . @prefix ns8: . prodotto:ID41539 pubblicazioni:rivista ns8:ID598622 ; skos:note "ISI Web of Science (WOS)"^^xsd:string ; pubblicazioni:affiliazioni "Dipartimento di Elettronica e Informazione, Politecnico di Milano e Tele-Rilevamento Europa-T.R.E. Srl, Milano, Italy\nCNR-IRPI, Bari, Italy"^^xsd:string ; pubblicazioni:titolo "Investigating landslides with space-borne Synthetic Aperture Radar (SAR) interferometry."^^xsd:string . @prefix prodottidellaricerca: . prodotto:ID41539 prodottidellaricerca:abstract "This paper is addressed to readers without advanced knowledge of remote sensing. It illustrates some current and potential uses of\nsatellite Synthetic Aperture Radar interferometry (InSAR) for landslide assessment. Data acquired by SAR systems can provide 3D\nterrain models and be used to assist in regional scale investigations, e.g. aimed at evaluation of susceptibility of slopes to failure.\nUnder favourable environmental conditions, the innovative Permanent Scatterers (PS) technique, which overcomes several\nlimitations of conventional SAR differential interferometry (DInSAR) applications in landslide studies, is suitable for monitoring\nslope deformations with millimetric precision. The PS technique combines the wide-area coverage typical of satellite imagery with\nthe capability of providing displacement data relative to individual image pixels. With the currently available radar satellites,\nhowever, only very slow ground surface displacements can be reliably detected and measured. The presented case study of a\nlandslide from the Liechtenstein Alps indicates that the most attractive and reliable contribution provided by this remote sensing\ntechnique lies in the possibility of (i.) wide-area qualitative distinction between stable and unstable areas and (ii.) qualitative\n(relative) hazard zonation of large, slow landslides based on the identification of segments characterised by different movement rates.\nSince only the radar line of sight projection of the displacements can be detected, a quantitative exploitation of the PS data is possible\nonly where sufficient ground truth is available. In site specific or single landslide investigations the PS data can represent a very\nuseful complementary data source with respect to the information acquired through ground based observations and in situ surveying.\nHowever, the difficulties associated with the feasibility assessments of the applicability of SAR data to local scale problems, as well\nas with the interpretation of PS results, require a close collaboration between landslide experts and specialists in advanced processing\nof radar satellite data. The interpretation of the exact geotechnical significance of small, radar sensed ground surface deformations is\nchallenging, especially where ground truth is lacking. Although any ground deformation is potentially of interest to an engineering\ngeologist, detection of movements in both vertical and horizontal directions is needed in the case of landslides to evaluate slope\nfailure mechanisms.With their high radar viewing angles, however, the current space-borne systems can detect only a fraction of the\nhorizontal component of movement. It is expected that the upcoming SAR dedicated missions with new sensors and different\nacquisition geometries, combined with the rapid developments in the field of advanced radar data processing, will allow a full 3D\nreconstruction of deformation data and help to further reduce the current limitations of the PS and similar DInSAR approaches."@en . @prefix modulo: . prodotto:ID41539 prodottidellaricerca:prodottoDi modulo:ID2964 . @prefix istituto: . prodotto:ID41539 prodottidellaricerca:prodottoDi istituto:CDS066 ; pubblicazioni:autoreCNR unitaDiPersonaleInterno:MATRICOLA23002 . @prefix parolechiave: . prodotto:ID41539 parolechiave:insiemeDiParoleChiave . istituto:CDS066 prodottidellaricerca:prodotto prodotto:ID41539 . modulo:ID2964 prodottidellaricerca:prodotto prodotto:ID41539 . ns8:ID598622 pubblicazioni:rivistaDi prodotto:ID41539 . parolechiave:insiemeDiParoleChiaveDi prodotto:ID41539 .