Surface deformation analysis in the Ischia Island (Italy) based on spaceborne radar interferometry (Articolo in rivista)

Type
Label
  • Surface deformation analysis in the Ischia Island (Italy) based on spaceborne radar interferometry (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.jvolgeores.2005.09.010 (literal)
Alternative label
  • Manzo M., Ricciardi G. P., Casu F., Ventura G., Zeni G., Borgström S., Berardino P., Del Gaudio C., Lanari R. (2006)
    Surface deformation analysis in the Ischia Island (Italy) based on spaceborne radar interferometry
    in Journal of volcanology and geothermal research
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Manzo M., Ricciardi G. P., Casu F., Ventura G., Zeni G., Borgström S., Berardino P., Del Gaudio C., Lanari R. (literal)
Pagina inizio
  • 399 (literal)
Pagina fine
  • 416 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 151 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Manzo M., Istituto per il Rilevamento Elettromagnetico dell'Ambiente, CNR, Italy Casu F., Istituto per il Rilevamento Elettromagnetico dell'Ambiente, CNR, Italy Zeni G., Istituto per il Rilevamento Elettromagnetico dell'Ambiente, CNR, Italy Berardino P., Istituto per il Rilevamento Elettromagnetico dell'Ambiente, CNR, Italy Lanrai R., Istituto per il Rilevamento Elettromagnetico dell'Ambiente, CNR, Italy Ricciardi G.P., Ist Nazl Geofis & Vulcanol, Osservatorio Vesuviano, I-80124 Naples, Italy Borgström S., Ist Nazl Geofis & Vulcanol, Osservatorio Vesuviano, I-80124 Naples, Italy Del Gaudio C., Ist Nazl Geofis & Vulcanol, Osservatorio Vesuviano, I-80124 Naples, Italy Ventura G., Ist Nazl Geofis & Vulcanol, Dept Seismol & Tectonophys, I-00143 Rome, Italy (literal)
Titolo
  • Surface deformation analysis in the Ischia Island (Italy) based on spaceborne radar interferometry (literal)
Abstract
  • The island of Ischia, located at the northwestern end of the Gulf of Napoli (Italy), is a volcanic area that is historically active the Arso eruption, in 1302 and the Casamicciola earthquake, in 1883) and has diffuse hydrothermal phenomena. We present in this work a study of the surface deformation occurring in the island, which is based on applying the Differential Synthetic Aperture Radar Interferometry (DInSAR) algorithm referred to as Small BAseline Subset (SBAS) technique. This study is focused on the 1992–2003 time interval and SAR data acquired by the European Remote Sensing (ERS) satellites from ascending and descending orbits have been used, thus allowing us to discriminate the vertical and east–west components of the displacements. A validation of the DInSAR results has been carried out first by comparing the vertical deformations estimated from the SAR data with those measured from the spirit leveling network that is present in the area. In particular, we computed the difference between the mean vertical deformation velocities estimated from the SAR and the corresponding geodetic measurements along three main leveling lines; the maximum value of the root mean square difference is of about 1 mm/yr. The final discussion is dedicated to the interpretation of the detected displacements, benefiting from the overall information extracted from the ascending and descending DInSAR measurements. In particular, DInSAR data relative to the vertical deformation component show that the present-day subsidence of Ischia mainly develops in areas characterized by active landsliding and along faults; moreover, the deflation of the island, which is recorded by the horizontal displacement component, is probably related to the de-pressurization of the hydrothermal system. (literal)
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