La variazione recente del campo di deformazione dell'area dei Campi Flegrei (Napoli) osservata con dati di Interferometria SAR

Abstract

Geodetic monitoring of Campi Flegrei caldera, west of Naples, has been historically carried out through ground-based networks and integrated at the end of the nineties with space-borne InSAR techniques, exploiting the SAR sensors onboard the ERS1-2 and ENVISAT satellites from the European Space Agency (ESA).
Recently, besides the ESA satellites operating in the C-band, InSAR monitoring of Campi Flegrei area has been complemented also by high resolution SAR sensors, i.e. TerraSAR-X from the German Aerospace Center (DLR) operating in the X-band, in order to measure also small ground deformations, otherwise not detectable by C-band sensors.
Starting from April 2011, Campi Flegrei area underwent an uplift phase of more than 4 cm till now, strong enough to be detected also through ASAR-ENVISAT observations, in spite of the limitations due to the satellite orbital switch at the end of 2010.
In this paper the results of ASAR-ENVISAT data processing are presented for the period from January 2011 to February 2012, showing a ground deformation value comparable with the outcomes of other geodetic techniques.