@prefix pubblicazioni: . @prefix unitaDiPersonaleInterno: . @prefix prodotto: . unitaDiPersonaleInterno:MATRICOLA23002 pubblicazioni:autoreCNRDi prodotto:ID41538 . @prefix prodottidellaricerca: . @prefix istituto: . istituto:CDS066 prodottidellaricerca:prodotto prodotto:ID41538 . @prefix modulo: . modulo:ID2964 prodottidellaricerca:prodotto prodotto:ID41538 . @prefix rdf: . prodotto:ID41538 rdf:type prodotto:TIPO1101 . @prefix retescientifica: . prodotto:ID41538 rdf:type retescientifica:ProdottoDellaRicerca . @prefix rdfs: . prodotto:ID41538 rdfs:label "Application of multi-temporal differential interferometry to slope instability detection in urban/peri-urban areas. (Articolo in rivista)"@en . @prefix xsd: . prodotto:ID41538 pubblicazioni:anno "2006-01-01T00:00:00+01:00"^^xsd:gYear ; pubblicazioni:doi "10.1016/j.enggeo.2006.09.015"^^xsd:string . @prefix skos: . prodotto:ID41538 skos:altLabel "
Bovenga F.; Nutricato R.; Refice A.; Wasowski J. (2006)
Application of multi-temporal differential interferometry to slope instability detection in urban/peri-urban areas.
in Engineering geology
"^^rdf:HTML ; pubblicazioni:autori "Bovenga F.; Nutricato R.; Refice A.; Wasowski J."^^xsd:string ; pubblicazioni:paginaInizio "218"^^xsd:string ; pubblicazioni:paginaFine "239"^^xsd:string ; pubblicazioni:numeroVolume "88"^^xsd:string . @prefix ns11: . prodotto:ID41538 pubblicazioni:rivista ns11:ID598622 ; skos:note "ISI Web of Science (WOS)"^^xsd:string ; pubblicazioni:affiliazioni "Dipartimento Interateneo di Fisica, Politecnico di Bari, Bari Italy\nCNR-ISSIA, Bari Italy\nCNR-IRPI, Bari Italy"^^xsd:string ; pubblicazioni:titolo "Application of multi-temporal differential interferometry to slope instability detection in urban/peri-urban areas."^^xsd:string ; prodottidellaricerca:abstract "We present two case studies regarding the application of Synthetic Aperture Radar (SAR) Persistent Scatterers Interferometry\n(PSI) techniques to landslide-prone slopes situated in the municipal territories of Caramanico Terme and Volturino (Italy). The\nanalysis of satellite SAR data with PSI techniques poses often problems on sites where, due to the scarcity of human artefacts and the\npresence of vegetation cover, density of coherent points (PS) is low (b10 per km2). Moreover, the steep and rough topography typical\nof landslide-prone areas hamper the interferometric pre-processing, making more difficult the joint estimation of displacements and of\nDEM errors. Under these conditions the significance of temporal interferometric phase trends can be uncertain and conservative\nassumptions, necessary to ensure low false detection probabilities, need to be coupled with innovative processing strategies to\nincrease the detection efficiency of PS objects. Here, the SPINUA (Stable Point Interferometry over Un-urbanised Areas) processing\ntechnique is applied together with an alternative PS Candidate (PSC) selection procedure based on the use of pixels classified as urban.\nThe cases of Caramanico and Volturino are representative, respectively, of harsh and favourable conditions for PSI applications. The\nresults from Caramanico show clusters of PS exhibiting similar line-of-sight (LOS) deformation behaviour in the period 1995-2000. The\nlocations ofmoving PS often coincidewith distressed buildings and appear consistent with the areal distribution of recent and past landslide\nactivity. The temporal displacement trends, however, are characterised by very low annual average velocities (from 3 to 7 mm/y) and it is\nuncertain to what extent the PS data reflect true slope movements, local deformations (e.g. settlement of engineering structures) or both.\nThanks to the more favourable conditions, the application of the standard SPINUA approach in the Volturino area was sufficient to\nobtain suitable densities of PS, as well as spatially and temporally consistent displacement results for a period 1992-2000. In\nparticular, a group of moving PS was identified in a peri-urban area, known for the past and recent slope stability problems. The slowly\nmoving PS (from 3 to 5 mm/y) fall in a location that, unlike the remaining part of the town, is characterised by the presence of many\ndistressed buildings and structures. Although the site information confirms the reliability of PS data, in the absence of ground\nmonitoring and detailed records of landslide movements, it is difficult to identify the main mechanism of the detected deformations. In\ngeneral, in geologically and topographically complex urban/peri-urban settings, the significance of very low-velocity PSI surface\ndisplacements should always be considered together with in situ geotechnical controls and ground monitoring data."@en ; prodottidellaricerca:prodottoDi modulo:ID2964 , istituto:CDS066 ; pubblicazioni:autoreCNR unitaDiPersonaleInterno:MATRICOLA23002 . @prefix parolechiave: . prodotto:ID41538 parolechiave:insiemeDiParoleChiave . ns11:ID598622 pubblicazioni:rivistaDi prodotto:ID41538 . parolechiave:insiemeDiParoleChiaveDi prodotto:ID41538 .